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CONTENTS
7-1 The form of modal auxiliaries
7-2 Expressing ability: can and could
7-3 Expressing possibility: may, might, and maybe Expressing …
7-4 Using could to express possibility
7-5 Polite questions: may I, could I, can I
7-6 Polite questions: would you, could you, will you, can you
7-7 Expressing advice: should and ought to
7-8 Expressing advice: had better
7-9 Expressing necessity: have to, have got to, must
7-10 Expressing lack of necessity: do not have to Expressing: …
7-11 Making logical conclusions: must
7-12 Tag questions with modal auxiliaries
7-13 Giving instructions: imperative sentences
7-14 Making suggestions: let's and why don't
7-15 Stating preferences: prefer, like...better, would rather
1
7-1 THE FORM OF MODAL AUXILIARIES

Somebody should clean up this mess.

2
7-1 THE FORM OF MODAL AUXILIARIES

AUXILIARY + SIMPLE FORM OF VERB

can

(a) Inga can play the violin.

could

(b) They couldn’t arrive on time.

may

(c) It may be a nice day tomorrow.

might

(d) It might be a nice day tomorrow.

3
7-1 THE FORM OF MODAL AUXILIARIES

AUXILIARY + SIMPLE FORM OF VERB

should

(e) Inga should go inside.

had better

(f) You had better go inside.

must

(g) He must be gentle with the cat.

will

(h) They will attend the recital.

would

(i) I would like to meet her.
4
7-1 THE FORM OF MODAL AUXILIARIES

AUXILIARY + SIMPLE FORM OF VERB

can
might

could

should

may

must

had better

would
will

not followed by to
Inga can to play the violin.
5
7-1 THE FORM OF MODAL AUXILIARIES

AUXILIARY + SIMPLE FORM OF VERB

can
might

could
may

should

must

had better

would
will

no final -s
Inga can plays the violin.
6
7-1 THE FORM OF MODAL AUXILIARIES

AUXILIARY + SIMPLE FORM OF VERB

can
might

could

should

may

must

had better

would
will

not in past form
Inga can played the violin.
7
7-1 THE FORM OF MODAL AUXILIARIES

AUXILIARY + SIMPLE FORM OF VERB

can
might

could

should

may

must

had better

would
will

not in -ing form
Inga can playing the violin.
8
7-1 THE FORM OF MODAL AUXILIARIES

AUXILIARY + TO + SIMPLE FORM OF VERB

have to
(j) You have to be on time.
have got to (k) He has got to be on time.
be able to
ought to

(l) He is able to be on time.
(m) He ought to be on time.
to + simple form

9
7-1 LET’S PRACTICE

to
Ø
to
She has ___ learn how to skate.

10
7-1 LET’S PRACTICE

to
Ø
Ø
She might ___ learn how to skate.

11
7-1 LET’S PRACTICE

to
Ø
She should ___ learn how to skate.
Ø

12
7-2 EXPRESSING ABILITY: CAN AND COULD

I can’t believe that!

13
7-2 EXPRESSING ABILITY: CAN AND COULD

(a) Dolphins can jump very high.
(b) They can swim long distances.
(c) They can be taught fancy tricks.
can

ability in present
or future

14
7-2 EXPRESSING ABILITY: CAN AND COULD

can’t
(d) I cannot
can not

fix this computer.

three negative forms
of can

15
7-2 EXPRESSING ABILITY: CAN AND COULD

´

(e) Amy can play tennis.

´

(f) Doug can’t play tennis.

can
can’t

unstressed
sounds like “kun”
stressed
sounds like “kæn”
16
7-2 EXPRESSING ABILITY: CAN AND COULD

(g) When we were in college, we could play
chess for hours.
could

=

past form of can

17
7-2 EXPRESSING ABILITY: CAN AND COULD

(h) I couldn’t play chess in graduate school.
I had to study all the time.

couldn’t
or
could not

=

negative form
of could

18
7-2 EXPRESSING ABILITY: CAN AND COULD

(i). Mia can use a camera.
(j). Mia is able to use a camera.
(k). Mia could use a camera.
(l). Mia was able to use a camera.
be able to

same
meaning
same
meaning

ability

19
7-2 LET’S PRACTICE

can
can’t
can’t
He is always upset when he _______
remember something.

20
7-2 LET’S PRACTICE

can
can’t
A dolphin ______ run,
can’t
but it ______ jump.
can

21
7-2 LET’S PRACTICE

can
can’t
can
You ______ bring a horse
can’t
to water, but you ______
make him drink it.

22
7-3 EXPRESSING POSSIBILITY: MAY, MIGHT AND
MAYBE; EXPRESSING PERMISSION: MAY AND CAN

Maybe Alice heard some bad news.

23
7-3 EXPRESSING POSSIBILITY: MAY, MIGHT AND
MAYBE; EXPRESSING PERMISSION: MAY AND CAN

(a) It may snow this week.
(b) It might snow this week.

may, might

same
meaning

possibility

24
7-3 EXPRESSING POSSIBILITY: MAY, MIGHT AND
MAYBE; EXPRESSING PERMISSION: MAY AND CAN

(c)
Can we
finish this by
Monday?

I don’t know.
might be
We may be
ready by then.

25
7-3 EXPRESSING POSSIBILITY: MAY, MIGHT AND
MAYBE; EXPRESSING PERMISSION: MAY AND CAN

(d) It may not snow this week.
(e) It might not snow this week.
Negative: may not, might
not
no contractions

26
7-3 EXPRESSING POSSIBILITY: MAY, MIGHT AND
MAYBE; EXPRESSING PERMISSION: MAY AND CAN

(f) Maybe it will snow tomorrow.
COMPARE

(g) Maybe the test will be hard.

adverb

maybe
“possibly”
beginning of sentence
(h) The test may be hard.

verb

may be = may + the main verb be
27
7-3 EXPRESSING POSSIBILITY: MAY, MIGHT AND
MAYBE; EXPRESSING PERMISSION: MAY AND CAN

(i) Yes, you may borrow my pen.

more formal

(j) Sure, you can borrow my pen. less formal
may

permission

can often used, too

28
7-3 EXPRESSING POSSIBILITY: MAY, MIGHT AND
MAYBE; EXPRESSING PERMISSION: MAY AND CAN

(k) You may not borrow my pen.
You can’t borrow my pen.
may
deny permission
can often used, too

29
7-3 LET’S PRACTICE

I _______ done with
may be
this project tomorrow.

maybe
may be

30
7-3 LET’S PRACTICE

Maybe
_______ I’ll be done
with this project
tomorrow.

maybe
may be

31
7-3 LET’S PRACTICE

maybe
can
The boss told me
that we ____ use
can
the new color
printer.

32
7-4 USING COULD TO EXPRESS POSSIBILITY

This could be a long walk.

33
7-4 USING COULD TO EXPRESS POSSIBILITY

(a) Could you
understand the
lecture?

Not really. I could
only understand the
first few minutes.

could
past ability

34
7-4 USING COULD TO EXPRESS POSSIBILITY

(b)

Why isn’t this
working?

I don’t think it’s
serious. It could just
be a weak battery.
present
Could =
possibility

35
7-4 USING COULD TO EXPRESS POSSIBILITY

(c)

This error could
cause problems in
the whole company.

future
Could =
possibility

36
7-4 LET’S PRACTICE

I’d like to visit a beautiful place.
We could go to Thailand.

present
OR
future

37
7-4 LET’S PRACTICE

Oh, no! This could be a problem!
present
OR
future

38
7-4 LET’S PRACTICE

This car doesn’t run. The battery could
be dead.
present
OR
future

39
7-5 POLITE QUESTIONS: MAY I, COULD I, CAN I

May I help you?

40
7-5 POLITE QUESTIONS: MAY I, COULD I, CAN I

POLITE QUESTION

(a) May I please take your picture?
(b) Could I please take your picture?
(c) Can I please take your picture?
POSSIBLE ANSWERS
Yes.

Of course.

Yes. Of course.

Sure.

Okay.
Certainly.

Sorry, not today.
Yes. Certainly.

Uh-huh.

41
7-5 POLITE QUESTIONS: MAY I, COULD I, CAN I

POLITE QUESTION

(d) Can I take your picture, please?
(e) Can I take your picture?

please - at the end
no please - also ok
42
7-5 LET’S PRACTICE

CORRECT

?

YES
NO

Can I please borrow your car?

43
7-5 LET’S PRACTICE

CORRECT

?

YES
NO

May I borrow your car?

44
7-5 LET’S PRACTICE

CORRECT

?

YES
NO

Could I borrow please your car?

45
7-6 POLITE QUESTION: WOULD YOU, COULD YOU,
WILL YOU, CAN YOU

Would you please sit still?

46
7-6 POLITE QUESTION: WOULD YOU, COULD YOU,
WILL YOU, CAN YOU

POLITE QUESTION

(a) Would you please explain that again?
(b) Could you please explain that again?
(c) Will you please explain that again?
(d) Can you please explain that again?
basically the same meaning
47
7-6 POLITE QUESTION: WOULD YOU, COULD YOU,
WILL YOU, CAN YOU

POLITE QUESTION

(a) Would you please
explain that again?

POLITE ANSWERS

Yes.

Sure. Uh-huh.

(b) Could you please
Yes. Of course.
explain that again?
(c) Will you please
Certainly. Okay.
explain that again?
(d) Can you please
Of course. I’d be glad to.
explain that again?
I’m sorry. I don’t have time.
48
7-6 POLITE QUESTION: WOULD YOU, COULD YOU,
WILL YOU, CAN YOU

POLITE QUESTION

(a) Would you please
explain that again?
(b) Could you please
explain that again?
(c) Will you please
explain that again?
(d) Can you please
explain that again?

INCORRECT:

May you please
explain that again.

can is less formal

49
7-6 LET’S PRACTICE

CORRECT

?

YES
NO

Could you wash my car yesterday?

50
7-6 LET’S PRACTICE

CORRECT

?

YES
NO

Will you wash my car, please?

51
7-6 LET’S PRACTICE

CORRECT

?

YES
NO

May you please wash my car?

52
7-7 EXPRESSING ADVICE: SHOULD AND OUGHT TO

They should go home and get
some rest.

53
7-7 EXPRESSING ADVICE: SHOULD AND OUGHT TO

(a) I have a headache. I

should
take a nap.
ought to

(b) INCORRECT: I should to take a nap.
(c) INCORRECT: I ought taking a nap.
should + simple form of verb
ought + to + simple form of verb
54
7-7 EXPRESSING ADVICE: SHOULD AND OUGHT TO

(d) You need to study. You should not go out.
You need to study. You shouldn’t go out.
NEGATIVE: should + not = shouldn’t

Ought to

not usually used in negative

55
7-7 EXPRESSING ADVICE: SHOULD AND OUGHT TO

I don’t understand
the assignment.
What should I do?

(e)

QUESTION: should + subject + main verb

Ought to

not usually used in questions
56
7-7 EXPRESSING ADVICE: SHOULD AND OUGHT TO

(f)

You should
come in to
see me.

57
7-7 EXPRESSING ADVICE: SHOULD AND OUGHT TO

(f)

You ought to
come in to
see me.

58
7-7 EXPRESSING ADVICE: SHOULD AND OUGHT TO

(g)

Maybe you
should come
in to see me.

59
7-7 EXPRESSING ADVICE: SHOULD AND OUGHT TO

(g) Maybe you ought to come in to see me.

maybe + should, ought to

softens advice

60
7-7 LET’S PRACTICE

should

I need a book
about geology.

You should go
to the library.

61
7-7 LET’S PRACTICE

ought to

I need a book
about geology.

You ought to go
to the library.

62
7-7 LET’S PRACTICE

maybe, should

I need a book
about geology.

Maybe you should go
to the library.

63
7-8 EXPRESSING ADVICE: HAD BETTER

They had better go home and get
some rest.

64
7-8 EXPRESSING ADVICE: HAD BETTER

should
(a) I have a headache. I ought to take a nap.
had better
should
ought to
had better

same
meaning

good idea, good advice
65
7-8 EXPRESSING ADVICE: HAD BETTER

(b) He’d better be careful. His pan is on fire!
Had better usually = warning

66
7-8 LET’S PRACTICE

You’d better quit watching
TV all day.
Possible bad results?
 eat too much
catch a cold
 hurt your eyes
 not study enough
 not exercise enough
67
7-8 LET’S PRACTICE

He’d better not walk there.
Possible bad results?
 fall
 get hurt
get the flu
 be embarrassed
fail a test
68
7-8 LET’S PRACTICE

He’d better stay awake in school.
Possible bad results?
 miss something
get hurt
 get in trouble
 fail a test
get the flu
69
7-9 EXPRESSING NECESSITY: HAVE TO,
HAVE GOT TO, MUST

This man has to wear ear protection.

70
7-9 EXPRESSING NECESSITY: HAVE TO,
HAVE GOT TO, MUST

(a) I want to become a doctor.
have to
I have got to go to medical school.
must
have to
have got to
had better

same
meaning

something is necessary
71
7-9 EXPRESSING NECESSITY: HAVE TO,
HAVE GOT TO, MUST

(b)

I need to hurry.
I have to go to
soccer practice.

72
7-9 EXPRESSING NECESSITY: HAVE TO,
HAVE GOT TO, MUST

(c) It’s late. We’ve got to go home.

73
7-9 EXPRESSING NECESSITY: HAVE TO,
HAVE GOT TO, MUST

(d) Everyone must wear a seatbelt on an
airplane.
(e) Sally, you must clean your room every
night.

74
7-9 EXPRESSING NECESSITY: HAVE TO,
HAVE GOT TO, MUST

(b) I have to go to soccer practice.
(c) We’ve got to go home.
(d) Everyone must wear a seatbelt on an airplane.
(e) Sally, you must clean your room every night.

have to
have got to
must

most common
informal conversation
written instructions
talking to young children
75
7-9 EXPRESSING NECESSITY: HAVE TO,
HAVE GOT TO, MUST

(f) Do you have to wear seatbelts in your car?
(g) Did they all have to come?

Questions

have to
have got to
must

76
7-9 EXPRESSING NECESSITY: HAVE TO,
HAVE GOT TO, MUST

(f) Do you have to wear seatbelts in your car?
(g) Did they all have to come?

Questions

have to
have got to
must

77
7-9 EXPRESSING NECESSITY: HAVE TO,
HAVE GOT TO, MUST

(f) Do you have to wear seatbelts in your car?
(g) Did they all have to come?

Questions

have to
have got to
must

78
7-9 EXPRESSING NECESSITY: HAVE TO,
HAVE GOT TO, MUST

(h) We had to clean up the mess.
have to
have got to
must

Past form:
had to

79
7-9 EXPRESSING NECESSITY: HAVE TO,
HAVE GOT TO, MUST

PRONUNCIATION

(i) I have to (“hafta”) call my mom.
(j) Jason has to (“hasta”) work tomorrow.
(k) I’ve got to (“gotta”) cook dinner tonight.
/hӕftә/ or /hӕftu/
/hӕstә/ or /hӕstu/
/gadә/ or /gәtә/
80
7-9 LET’S PRACTICE

CORRECT

?

YES
NO

Do I must wash all the dishes?

81
7-9 LET’S PRACTICE

CORRECT

?

YES
NO

Do I have to wash all the dishes?

82
7-9 LET’S PRACTICE

CORRECT

?

YES
NO

Do I have got to wash all the dishes?

83
7-10
EXPRESSING LACK OF NECESSITY: DO NOT HAVE TO
EXPRESSING PROHIBITION: MUST NOT

You mustn’t talk on the phone
while you are driving.

84
7-10
EXPRESSING LACK OF NECESSITY: DO NOT HAVE TO
EXPRESSING PROHIBITION: MUST NOT

(a) I mowed the yard yesterday.
I don’t have to mow it this weekend.
not necessary

85
7-10
EXPRESSING LACK OF NECESSITY: DO NOT HAVE TO
EXPRESSING PROHIBITION: MUST NOT

(b) Alesha is on vacation.
She doesn’t have to go to work today.
not necessary

86
7-10
EXPRESSING LACK OF NECESSITY: DO NOT HAVE TO
EXPRESSING PROHIBITION: MUST NOT

(c) You must not swim here.
(d) You must not swim in this water.
Prohibition
(Do Not Do This!)

87
7-10
EXPRESSING LACK OF NECESSITY: DO NOT HAVE TO
EXPRESSING PROHIBITION: MUST NOT

(e) You mustn’t throw trash in the garden.
must + not = mustn’t

88
7-10 LET’S PRACTICE

We cleaned the house this morning.
We _________________________ now.
don’t have to clean the house

89
7-10 LET’S PRACTICE

I cooked dinner this morning.
I ______________________ tonight.
don’t have to cook dinner

90
7-10 LET’S PRACTICE

Swimming is prohibited.
must not / mustn’t
You _______________ swim here.

91
7-11 MAKING LOGICAL CONCLUSIONS: MUST

Mary and Artie are smiling.
They must be happy.

92
7-11 MAKING LOGICAL CONCLUSIONS: MUST

(a) That woman is
very funny.

She must
be a
comedian.

best guess

must

OR

logical
conclusion
93
7-11 MAKING LOGICAL CONCLUSIONS: MUST

COMPARE
LOGICAL CONCLUSION

(b) My friends went skydiving.
They must be brave.
NECESSITY

(c) To become a scientist,
you must go to college.

94
7-11 MAKING LOGICAL CONCLUSIONS: MUST

COMPARE
NEGATIVE LOGICAL CONCLUSION

(d) Jed smokes.
He must not know that smoking is harmful.
PROHIBITION

(e) We need money for the future.
We must not spend it all now.

95
7-11 LET’S PRACTICE

necessity
prohibition
logical conclusion
negative logical conclusion
Jenny swims everyday.
She must love to swim.

96
7-11 LET’S PRACTICE

necessity
prohibition
logical conclusion
negative logical conclusion
Smoking is not allowed.
You must not smoke.

97
7-11 LET’S PRACTICE

necessity
prohibition
logical conclusion
negative logical conclusion
If you want to graduate,
you must stay in school.

98
7-12 TAG QUESTIONS WITH MODAL AUXILIARIES

You can keep a secret,
can’t you?

99
7-12 TAG QUESTIONS WITH MODAL AUXILIARIES

(a)
(b)
(c)
(d)

You can keep a secret, can’t you?
He won’t say anything, will he?
She should try, shouldn’t she?
They couldn’t come, could they?

(e) We would like to go, wouldn’t we?
Tag questions
are common with

can, will,
should, could,
and would
100
7-12 TAG QUESTIONS WITH MODAL AUXILIARIES

(f) You have to go, don’t you?
(g) You don’t have to go, do you?
(h) He has to leave, doesn’t he?
(i) He doesn’t have to leave, does he?
(j) You had to try, didn’t you?
(k) You didn’t have to to try, did you?
Tag questions
also with

have to, has to,
and had to
101
7-12 TAG QUESTIONS WITH MODAL AUXILIARIES

(f) You have to go, don’t you?
(g) You don’t have to go, do you?
(h) He has to leave, doesn’t he?
(i) He doesn’t have to leave, does he?
(j) You had to try, didn’t you?
(k) You didn’t have to to try, did you?
Tag questions
also with

use to, has
haveforms to,
of do
and had to
102
7-12 LET’S PRACTICE

should
They ______________ stop working,
should
_____________?
shouldn’t they

103
7-12 LET’S PRACTICE

have to
She ______________ work today,
doesn’t have to
_____________?
does she

104
7-12 LET’S PRACTICE

would
She ______________ like to ask a
would
question, _____________?
wouldn’t she

105
7-13 GIVING INSTRUCTIONS: IMPERATIVE
SENTENCES

Listen to me!

106
7-13 GIVING INSTRUCTIONS: IMPERATIVE
SENTENCES

COMMAND

(a)

Sit down! You
are in trouble.

Yes,
Mom.

107
7-13 GIVING INSTRUCTIONS: IMPERATIVE
SENTENCES

REQUEST

(b)

Sit down,
please. I want
to talk to you.

Okay,
Mom.

108
7-13 GIVING INSTRUCTIONS: IMPERATIVE
SENTENCES

DIRECTIONS

(c) Emma: So, where should I turn?
Adam: In two miles, turn right.
Then drive five miles to the
hotel on the left.

109
7-13 GIVING INSTRUCTIONS: IMPERATIVE
SENTENCES

COMMAND
REQUEST
DIRECTIONS

(a) Sit down!
(b) Sit down, please.
(c) Turn right. Then drive five miles.

give commands
make polite requests
give directions

imperative
sentences

110
7-13 GIVING INSTRUCTIONS: IMPERATIVE
SENTENCES

(d) Slow down!

111
7-13 GIVING INSTRUCTIONS: IMPERATIVE
SENTENCES

(d) Slow down!
(e) Please slow down!

112
7-13 GIVING INSTRUCTIONS: IMPERATIVE
SENTENCES

(d)Come down!
(f) Slow on!
(e) Please slow down!
(f) Come on!

subject of sentence = you (unspoken)
113
7-13 GIVING INSTRUCTIONS: IMPERATIVE
SENTENCES

(g) Don’t worry. I won’t fall.

114
7-13 GIVING INSTRUCTIONS: IMPERATIVE
SENTENCES

(g) Don’t worry. I won’t fall.
(h) Please don’t drive so fast.

115
7-13 GIVING INSTRUCTIONS: IMPERATIVE
SENTENCES

(g) Don’t worry. I won’t fall.
(h) Please don’t drive so fast.
(i) Don’t do that again.

Don’t + simple form of a verb

116
7-13 LET’S PRACTICE

?

command
request
directions

Please don’t worry about me.

117
7-13 LET’S PRACTICE

?

command
request
directions

To use chopsticks, keep one finger over
the other, and use your thumb to direct the
movement.

118
7-13 LET’S PRACTICE

?

command
request
directions

Don’t swing so high!

119
7-14 MAKING SUGGESTIONS: LET’S AND WHY DON’T

Let’s try this approach.

120
7-14 MAKING SUGGESTIONS: LET’S AND WHY DON’T

(b)
(a)

Let’s buy we
Why don’t this
one. It one?
buy this looks It
good.
looks good.

That’s okay
with me.

121
7-14 MAKING SUGGESTIONS: LET’S AND WHY DON’T

(a) Let’s buy this one.
(b) Why don’t we buy this one?

same
meaning

suggestions about activities

122
7-14 MAKING SUGGESTIONS: LET’S AND WHY DON’T

(c)

I don’t know
which classes
to take.

Why don’t
you ask your
advisor?

friendly suggestion
123
7-14 LET’S PRACTICE

Let’s
We have a big test tomorrow.
Let’s study
___________ together.

124
7-14 LET’S PRACTICE

Why don’t we
We have a big test tomorrow.
Why don’t we study
________________ together?

125
7-14 LET’S PRACTICE

I don’t
understand
this report.

Why don’t you
Why don’t you look
________________
at this line?

126
7-15 STATING PREFERENCES: PREFER, LIKE…
BETTER, WOULD RATHER

I would rather have a
motorcycle than a car.

127
7-15 STATING PREFERENCES: PREFER, LIKE…
BETTER, WOULD RATHER

(a) I prefer motorcycles to cars.
prefer + noun + to + noun
(b) I prefer riding on a motorcycle to riding
in a car.
prefer + -ing verb + to + -ing verb

128
7-15 STATING PREFERENCES: PREFER, LIKE…
BETTER, WOULD RATHER

(c) I like motorcycles better than cars.
like + noun + better than + noun
(d) I like riding a motorcycle better than driving
in a car.
like + -ing verb + better than + -ing verb

129
7-15 STATING PREFERENCES: PREFER, LIKE…
BETTER, WOULD RATHER

(e) Ray would rather have a cat than a dog.
(f) INCORRECT: Ray would rather has a cat.
(g) I’d rather buy dinner than cook it.
(h) INCORRECT:
I’d rather buy dinner than to cook it.
I’d rather buy dinner than cooking it.
would rather

simple form of verb
130
7-15 STATING PREFERENCES: PREFER, LIKE…
BETTER, WOULD RATHER

(i) I’d/You’d/She’d/He’d/We’d/They’d rather
have a motorcycle.
Contraction of would = ’d.
l

(j) Would you rather have a car or a motorcycle?
would rather

or

polite situations / offers a choice
131
7-15 LET’S PRACTICE

than
to
I like to play badminton better ____ tennis.
than

132
7-15 LET’S PRACTICE

than
to
I prefer badminton ___ tennis.
to

133
7-15 LET’S PRACTICE

than
to
I would rather play badminton ____ tennis.
than

134
PHOTO CREDITS

Copyright © 2008 Pearson Education and
its licensors. All rights reserved.
Images used under license from:
• Shutterstock, Inc.
• Clipart, Inc.

135
135

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Modals powerpoint

  • 1. CONTENTS 7-1 The form of modal auxiliaries 7-2 Expressing ability: can and could 7-3 Expressing possibility: may, might, and maybe Expressing … 7-4 Using could to express possibility 7-5 Polite questions: may I, could I, can I 7-6 Polite questions: would you, could you, will you, can you 7-7 Expressing advice: should and ought to 7-8 Expressing advice: had better 7-9 Expressing necessity: have to, have got to, must 7-10 Expressing lack of necessity: do not have to Expressing: … 7-11 Making logical conclusions: must 7-12 Tag questions with modal auxiliaries 7-13 Giving instructions: imperative sentences 7-14 Making suggestions: let's and why don't 7-15 Stating preferences: prefer, like...better, would rather 1
  • 2. 7-1 THE FORM OF MODAL AUXILIARIES Somebody should clean up this mess. 2
  • 3. 7-1 THE FORM OF MODAL AUXILIARIES AUXILIARY + SIMPLE FORM OF VERB can (a) Inga can play the violin. could (b) They couldn’t arrive on time. may (c) It may be a nice day tomorrow. might (d) It might be a nice day tomorrow. 3
  • 4. 7-1 THE FORM OF MODAL AUXILIARIES AUXILIARY + SIMPLE FORM OF VERB should (e) Inga should go inside. had better (f) You had better go inside. must (g) He must be gentle with the cat. will (h) They will attend the recital. would (i) I would like to meet her. 4
  • 5. 7-1 THE FORM OF MODAL AUXILIARIES AUXILIARY + SIMPLE FORM OF VERB can might could should may must had better would will not followed by to Inga can to play the violin. 5
  • 6. 7-1 THE FORM OF MODAL AUXILIARIES AUXILIARY + SIMPLE FORM OF VERB can might could may should must had better would will no final -s Inga can plays the violin. 6
  • 7. 7-1 THE FORM OF MODAL AUXILIARIES AUXILIARY + SIMPLE FORM OF VERB can might could should may must had better would will not in past form Inga can played the violin. 7
  • 8. 7-1 THE FORM OF MODAL AUXILIARIES AUXILIARY + SIMPLE FORM OF VERB can might could should may must had better would will not in -ing form Inga can playing the violin. 8
  • 9. 7-1 THE FORM OF MODAL AUXILIARIES AUXILIARY + TO + SIMPLE FORM OF VERB have to (j) You have to be on time. have got to (k) He has got to be on time. be able to ought to (l) He is able to be on time. (m) He ought to be on time. to + simple form 9
  • 10. 7-1 LET’S PRACTICE to Ø to She has ___ learn how to skate. 10
  • 11. 7-1 LET’S PRACTICE to Ø Ø She might ___ learn how to skate. 11
  • 12. 7-1 LET’S PRACTICE to Ø She should ___ learn how to skate. Ø 12
  • 13. 7-2 EXPRESSING ABILITY: CAN AND COULD I can’t believe that! 13
  • 14. 7-2 EXPRESSING ABILITY: CAN AND COULD (a) Dolphins can jump very high. (b) They can swim long distances. (c) They can be taught fancy tricks. can ability in present or future 14
  • 15. 7-2 EXPRESSING ABILITY: CAN AND COULD can’t (d) I cannot can not fix this computer. three negative forms of can 15
  • 16. 7-2 EXPRESSING ABILITY: CAN AND COULD ´ (e) Amy can play tennis. ´ (f) Doug can’t play tennis. can can’t unstressed sounds like “kun” stressed sounds like “kæn” 16
  • 17. 7-2 EXPRESSING ABILITY: CAN AND COULD (g) When we were in college, we could play chess for hours. could = past form of can 17
  • 18. 7-2 EXPRESSING ABILITY: CAN AND COULD (h) I couldn’t play chess in graduate school. I had to study all the time. couldn’t or could not = negative form of could 18
  • 19. 7-2 EXPRESSING ABILITY: CAN AND COULD (i). Mia can use a camera. (j). Mia is able to use a camera. (k). Mia could use a camera. (l). Mia was able to use a camera. be able to same meaning same meaning ability 19
  • 20. 7-2 LET’S PRACTICE can can’t can’t He is always upset when he _______ remember something. 20
  • 21. 7-2 LET’S PRACTICE can can’t A dolphin ______ run, can’t but it ______ jump. can 21
  • 22. 7-2 LET’S PRACTICE can can’t can You ______ bring a horse can’t to water, but you ______ make him drink it. 22
  • 23. 7-3 EXPRESSING POSSIBILITY: MAY, MIGHT AND MAYBE; EXPRESSING PERMISSION: MAY AND CAN Maybe Alice heard some bad news. 23
  • 24. 7-3 EXPRESSING POSSIBILITY: MAY, MIGHT AND MAYBE; EXPRESSING PERMISSION: MAY AND CAN (a) It may snow this week. (b) It might snow this week. may, might same meaning possibility 24
  • 25. 7-3 EXPRESSING POSSIBILITY: MAY, MIGHT AND MAYBE; EXPRESSING PERMISSION: MAY AND CAN (c) Can we finish this by Monday? I don’t know. might be We may be ready by then. 25
  • 26. 7-3 EXPRESSING POSSIBILITY: MAY, MIGHT AND MAYBE; EXPRESSING PERMISSION: MAY AND CAN (d) It may not snow this week. (e) It might not snow this week. Negative: may not, might not no contractions 26
  • 27. 7-3 EXPRESSING POSSIBILITY: MAY, MIGHT AND MAYBE; EXPRESSING PERMISSION: MAY AND CAN (f) Maybe it will snow tomorrow. COMPARE (g) Maybe the test will be hard. adverb maybe “possibly” beginning of sentence (h) The test may be hard. verb may be = may + the main verb be 27
  • 28. 7-3 EXPRESSING POSSIBILITY: MAY, MIGHT AND MAYBE; EXPRESSING PERMISSION: MAY AND CAN (i) Yes, you may borrow my pen. more formal (j) Sure, you can borrow my pen. less formal may permission can often used, too 28
  • 29. 7-3 EXPRESSING POSSIBILITY: MAY, MIGHT AND MAYBE; EXPRESSING PERMISSION: MAY AND CAN (k) You may not borrow my pen. You can’t borrow my pen. may deny permission can often used, too 29
  • 30. 7-3 LET’S PRACTICE I _______ done with may be this project tomorrow. maybe may be 30
  • 31. 7-3 LET’S PRACTICE Maybe _______ I’ll be done with this project tomorrow. maybe may be 31
  • 32. 7-3 LET’S PRACTICE maybe can The boss told me that we ____ use can the new color printer. 32
  • 33. 7-4 USING COULD TO EXPRESS POSSIBILITY This could be a long walk. 33
  • 34. 7-4 USING COULD TO EXPRESS POSSIBILITY (a) Could you understand the lecture? Not really. I could only understand the first few minutes. could past ability 34
  • 35. 7-4 USING COULD TO EXPRESS POSSIBILITY (b) Why isn’t this working? I don’t think it’s serious. It could just be a weak battery. present Could = possibility 35
  • 36. 7-4 USING COULD TO EXPRESS POSSIBILITY (c) This error could cause problems in the whole company. future Could = possibility 36
  • 37. 7-4 LET’S PRACTICE I’d like to visit a beautiful place. We could go to Thailand. present OR future 37
  • 38. 7-4 LET’S PRACTICE Oh, no! This could be a problem! present OR future 38
  • 39. 7-4 LET’S PRACTICE This car doesn’t run. The battery could be dead. present OR future 39
  • 40. 7-5 POLITE QUESTIONS: MAY I, COULD I, CAN I May I help you? 40
  • 41. 7-5 POLITE QUESTIONS: MAY I, COULD I, CAN I POLITE QUESTION (a) May I please take your picture? (b) Could I please take your picture? (c) Can I please take your picture? POSSIBLE ANSWERS Yes. Of course. Yes. Of course. Sure. Okay. Certainly. Sorry, not today. Yes. Certainly. Uh-huh. 41
  • 42. 7-5 POLITE QUESTIONS: MAY I, COULD I, CAN I POLITE QUESTION (d) Can I take your picture, please? (e) Can I take your picture? please - at the end no please - also ok 42
  • 43. 7-5 LET’S PRACTICE CORRECT ? YES NO Can I please borrow your car? 43
  • 45. 7-5 LET’S PRACTICE CORRECT ? YES NO Could I borrow please your car? 45
  • 46. 7-6 POLITE QUESTION: WOULD YOU, COULD YOU, WILL YOU, CAN YOU Would you please sit still? 46
  • 47. 7-6 POLITE QUESTION: WOULD YOU, COULD YOU, WILL YOU, CAN YOU POLITE QUESTION (a) Would you please explain that again? (b) Could you please explain that again? (c) Will you please explain that again? (d) Can you please explain that again? basically the same meaning 47
  • 48. 7-6 POLITE QUESTION: WOULD YOU, COULD YOU, WILL YOU, CAN YOU POLITE QUESTION (a) Would you please explain that again? POLITE ANSWERS Yes. Sure. Uh-huh. (b) Could you please Yes. Of course. explain that again? (c) Will you please Certainly. Okay. explain that again? (d) Can you please Of course. I’d be glad to. explain that again? I’m sorry. I don’t have time. 48
  • 49. 7-6 POLITE QUESTION: WOULD YOU, COULD YOU, WILL YOU, CAN YOU POLITE QUESTION (a) Would you please explain that again? (b) Could you please explain that again? (c) Will you please explain that again? (d) Can you please explain that again? INCORRECT: May you please explain that again. can is less formal 49
  • 50. 7-6 LET’S PRACTICE CORRECT ? YES NO Could you wash my car yesterday? 50
  • 51. 7-6 LET’S PRACTICE CORRECT ? YES NO Will you wash my car, please? 51
  • 52. 7-6 LET’S PRACTICE CORRECT ? YES NO May you please wash my car? 52
  • 53. 7-7 EXPRESSING ADVICE: SHOULD AND OUGHT TO They should go home and get some rest. 53
  • 54. 7-7 EXPRESSING ADVICE: SHOULD AND OUGHT TO (a) I have a headache. I should take a nap. ought to (b) INCORRECT: I should to take a nap. (c) INCORRECT: I ought taking a nap. should + simple form of verb ought + to + simple form of verb 54
  • 55. 7-7 EXPRESSING ADVICE: SHOULD AND OUGHT TO (d) You need to study. You should not go out. You need to study. You shouldn’t go out. NEGATIVE: should + not = shouldn’t Ought to not usually used in negative 55
  • 56. 7-7 EXPRESSING ADVICE: SHOULD AND OUGHT TO I don’t understand the assignment. What should I do? (e) QUESTION: should + subject + main verb Ought to not usually used in questions 56
  • 57. 7-7 EXPRESSING ADVICE: SHOULD AND OUGHT TO (f) You should come in to see me. 57
  • 58. 7-7 EXPRESSING ADVICE: SHOULD AND OUGHT TO (f) You ought to come in to see me. 58
  • 59. 7-7 EXPRESSING ADVICE: SHOULD AND OUGHT TO (g) Maybe you should come in to see me. 59
  • 60. 7-7 EXPRESSING ADVICE: SHOULD AND OUGHT TO (g) Maybe you ought to come in to see me. maybe + should, ought to softens advice 60
  • 61. 7-7 LET’S PRACTICE should I need a book about geology. You should go to the library. 61
  • 62. 7-7 LET’S PRACTICE ought to I need a book about geology. You ought to go to the library. 62
  • 63. 7-7 LET’S PRACTICE maybe, should I need a book about geology. Maybe you should go to the library. 63
  • 64. 7-8 EXPRESSING ADVICE: HAD BETTER They had better go home and get some rest. 64
  • 65. 7-8 EXPRESSING ADVICE: HAD BETTER should (a) I have a headache. I ought to take a nap. had better should ought to had better same meaning good idea, good advice 65
  • 66. 7-8 EXPRESSING ADVICE: HAD BETTER (b) He’d better be careful. His pan is on fire! Had better usually = warning 66
  • 67. 7-8 LET’S PRACTICE You’d better quit watching TV all day. Possible bad results?  eat too much catch a cold  hurt your eyes  not study enough  not exercise enough 67
  • 68. 7-8 LET’S PRACTICE He’d better not walk there. Possible bad results?  fall  get hurt get the flu  be embarrassed fail a test 68
  • 69. 7-8 LET’S PRACTICE He’d better stay awake in school. Possible bad results?  miss something get hurt  get in trouble  fail a test get the flu 69
  • 70. 7-9 EXPRESSING NECESSITY: HAVE TO, HAVE GOT TO, MUST This man has to wear ear protection. 70
  • 71. 7-9 EXPRESSING NECESSITY: HAVE TO, HAVE GOT TO, MUST (a) I want to become a doctor. have to I have got to go to medical school. must have to have got to had better same meaning something is necessary 71
  • 72. 7-9 EXPRESSING NECESSITY: HAVE TO, HAVE GOT TO, MUST (b) I need to hurry. I have to go to soccer practice. 72
  • 73. 7-9 EXPRESSING NECESSITY: HAVE TO, HAVE GOT TO, MUST (c) It’s late. We’ve got to go home. 73
  • 74. 7-9 EXPRESSING NECESSITY: HAVE TO, HAVE GOT TO, MUST (d) Everyone must wear a seatbelt on an airplane. (e) Sally, you must clean your room every night. 74
  • 75. 7-9 EXPRESSING NECESSITY: HAVE TO, HAVE GOT TO, MUST (b) I have to go to soccer practice. (c) We’ve got to go home. (d) Everyone must wear a seatbelt on an airplane. (e) Sally, you must clean your room every night. have to have got to must most common informal conversation written instructions talking to young children 75
  • 76. 7-9 EXPRESSING NECESSITY: HAVE TO, HAVE GOT TO, MUST (f) Do you have to wear seatbelts in your car? (g) Did they all have to come? Questions have to have got to must 76
  • 77. 7-9 EXPRESSING NECESSITY: HAVE TO, HAVE GOT TO, MUST (f) Do you have to wear seatbelts in your car? (g) Did they all have to come? Questions have to have got to must 77
  • 78. 7-9 EXPRESSING NECESSITY: HAVE TO, HAVE GOT TO, MUST (f) Do you have to wear seatbelts in your car? (g) Did they all have to come? Questions have to have got to must 78
  • 79. 7-9 EXPRESSING NECESSITY: HAVE TO, HAVE GOT TO, MUST (h) We had to clean up the mess. have to have got to must Past form: had to 79
  • 80. 7-9 EXPRESSING NECESSITY: HAVE TO, HAVE GOT TO, MUST PRONUNCIATION (i) I have to (“hafta”) call my mom. (j) Jason has to (“hasta”) work tomorrow. (k) I’ve got to (“gotta”) cook dinner tonight. /hӕftә/ or /hӕftu/ /hӕstә/ or /hӕstu/ /gadә/ or /gәtә/ 80
  • 81. 7-9 LET’S PRACTICE CORRECT ? YES NO Do I must wash all the dishes? 81
  • 82. 7-9 LET’S PRACTICE CORRECT ? YES NO Do I have to wash all the dishes? 82
  • 83. 7-9 LET’S PRACTICE CORRECT ? YES NO Do I have got to wash all the dishes? 83
  • 84. 7-10 EXPRESSING LACK OF NECESSITY: DO NOT HAVE TO EXPRESSING PROHIBITION: MUST NOT You mustn’t talk on the phone while you are driving. 84
  • 85. 7-10 EXPRESSING LACK OF NECESSITY: DO NOT HAVE TO EXPRESSING PROHIBITION: MUST NOT (a) I mowed the yard yesterday. I don’t have to mow it this weekend. not necessary 85
  • 86. 7-10 EXPRESSING LACK OF NECESSITY: DO NOT HAVE TO EXPRESSING PROHIBITION: MUST NOT (b) Alesha is on vacation. She doesn’t have to go to work today. not necessary 86
  • 87. 7-10 EXPRESSING LACK OF NECESSITY: DO NOT HAVE TO EXPRESSING PROHIBITION: MUST NOT (c) You must not swim here. (d) You must not swim in this water. Prohibition (Do Not Do This!) 87
  • 88. 7-10 EXPRESSING LACK OF NECESSITY: DO NOT HAVE TO EXPRESSING PROHIBITION: MUST NOT (e) You mustn’t throw trash in the garden. must + not = mustn’t 88
  • 89. 7-10 LET’S PRACTICE We cleaned the house this morning. We _________________________ now. don’t have to clean the house 89
  • 90. 7-10 LET’S PRACTICE I cooked dinner this morning. I ______________________ tonight. don’t have to cook dinner 90
  • 91. 7-10 LET’S PRACTICE Swimming is prohibited. must not / mustn’t You _______________ swim here. 91
  • 92. 7-11 MAKING LOGICAL CONCLUSIONS: MUST Mary and Artie are smiling. They must be happy. 92
  • 93. 7-11 MAKING LOGICAL CONCLUSIONS: MUST (a) That woman is very funny. She must be a comedian. best guess must OR logical conclusion 93
  • 94. 7-11 MAKING LOGICAL CONCLUSIONS: MUST COMPARE LOGICAL CONCLUSION (b) My friends went skydiving. They must be brave. NECESSITY (c) To become a scientist, you must go to college. 94
  • 95. 7-11 MAKING LOGICAL CONCLUSIONS: MUST COMPARE NEGATIVE LOGICAL CONCLUSION (d) Jed smokes. He must not know that smoking is harmful. PROHIBITION (e) We need money for the future. We must not spend it all now. 95
  • 96. 7-11 LET’S PRACTICE necessity prohibition logical conclusion negative logical conclusion Jenny swims everyday. She must love to swim. 96
  • 97. 7-11 LET’S PRACTICE necessity prohibition logical conclusion negative logical conclusion Smoking is not allowed. You must not smoke. 97
  • 98. 7-11 LET’S PRACTICE necessity prohibition logical conclusion negative logical conclusion If you want to graduate, you must stay in school. 98
  • 99. 7-12 TAG QUESTIONS WITH MODAL AUXILIARIES You can keep a secret, can’t you? 99
  • 100. 7-12 TAG QUESTIONS WITH MODAL AUXILIARIES (a) (b) (c) (d) You can keep a secret, can’t you? He won’t say anything, will he? She should try, shouldn’t she? They couldn’t come, could they? (e) We would like to go, wouldn’t we? Tag questions are common with can, will, should, could, and would 100
  • 101. 7-12 TAG QUESTIONS WITH MODAL AUXILIARIES (f) You have to go, don’t you? (g) You don’t have to go, do you? (h) He has to leave, doesn’t he? (i) He doesn’t have to leave, does he? (j) You had to try, didn’t you? (k) You didn’t have to to try, did you? Tag questions also with have to, has to, and had to 101
  • 102. 7-12 TAG QUESTIONS WITH MODAL AUXILIARIES (f) You have to go, don’t you? (g) You don’t have to go, do you? (h) He has to leave, doesn’t he? (i) He doesn’t have to leave, does he? (j) You had to try, didn’t you? (k) You didn’t have to to try, did you? Tag questions also with use to, has haveforms to, of do and had to 102
  • 103. 7-12 LET’S PRACTICE should They ______________ stop working, should _____________? shouldn’t they 103
  • 104. 7-12 LET’S PRACTICE have to She ______________ work today, doesn’t have to _____________? does she 104
  • 105. 7-12 LET’S PRACTICE would She ______________ like to ask a would question, _____________? wouldn’t she 105
  • 106. 7-13 GIVING INSTRUCTIONS: IMPERATIVE SENTENCES Listen to me! 106
  • 107. 7-13 GIVING INSTRUCTIONS: IMPERATIVE SENTENCES COMMAND (a) Sit down! You are in trouble. Yes, Mom. 107
  • 108. 7-13 GIVING INSTRUCTIONS: IMPERATIVE SENTENCES REQUEST (b) Sit down, please. I want to talk to you. Okay, Mom. 108
  • 109. 7-13 GIVING INSTRUCTIONS: IMPERATIVE SENTENCES DIRECTIONS (c) Emma: So, where should I turn? Adam: In two miles, turn right. Then drive five miles to the hotel on the left. 109
  • 110. 7-13 GIVING INSTRUCTIONS: IMPERATIVE SENTENCES COMMAND REQUEST DIRECTIONS (a) Sit down! (b) Sit down, please. (c) Turn right. Then drive five miles. give commands make polite requests give directions imperative sentences 110
  • 111. 7-13 GIVING INSTRUCTIONS: IMPERATIVE SENTENCES (d) Slow down! 111
  • 112. 7-13 GIVING INSTRUCTIONS: IMPERATIVE SENTENCES (d) Slow down! (e) Please slow down! 112
  • 113. 7-13 GIVING INSTRUCTIONS: IMPERATIVE SENTENCES (d)Come down! (f) Slow on! (e) Please slow down! (f) Come on! subject of sentence = you (unspoken) 113
  • 114. 7-13 GIVING INSTRUCTIONS: IMPERATIVE SENTENCES (g) Don’t worry. I won’t fall. 114
  • 115. 7-13 GIVING INSTRUCTIONS: IMPERATIVE SENTENCES (g) Don’t worry. I won’t fall. (h) Please don’t drive so fast. 115
  • 116. 7-13 GIVING INSTRUCTIONS: IMPERATIVE SENTENCES (g) Don’t worry. I won’t fall. (h) Please don’t drive so fast. (i) Don’t do that again. Don’t + simple form of a verb 116
  • 118. 7-13 LET’S PRACTICE ? command request directions To use chopsticks, keep one finger over the other, and use your thumb to direct the movement. 118
  • 120. 7-14 MAKING SUGGESTIONS: LET’S AND WHY DON’T Let’s try this approach. 120
  • 121. 7-14 MAKING SUGGESTIONS: LET’S AND WHY DON’T (b) (a) Let’s buy we Why don’t this one. It one? buy this looks It good. looks good. That’s okay with me. 121
  • 122. 7-14 MAKING SUGGESTIONS: LET’S AND WHY DON’T (a) Let’s buy this one. (b) Why don’t we buy this one? same meaning suggestions about activities 122
  • 123. 7-14 MAKING SUGGESTIONS: LET’S AND WHY DON’T (c) I don’t know which classes to take. Why don’t you ask your advisor? friendly suggestion 123
  • 124. 7-14 LET’S PRACTICE Let’s We have a big test tomorrow. Let’s study ___________ together. 124
  • 125. 7-14 LET’S PRACTICE Why don’t we We have a big test tomorrow. Why don’t we study ________________ together? 125
  • 126. 7-14 LET’S PRACTICE I don’t understand this report. Why don’t you Why don’t you look ________________ at this line? 126
  • 127. 7-15 STATING PREFERENCES: PREFER, LIKE… BETTER, WOULD RATHER I would rather have a motorcycle than a car. 127
  • 128. 7-15 STATING PREFERENCES: PREFER, LIKE… BETTER, WOULD RATHER (a) I prefer motorcycles to cars. prefer + noun + to + noun (b) I prefer riding on a motorcycle to riding in a car. prefer + -ing verb + to + -ing verb 128
  • 129. 7-15 STATING PREFERENCES: PREFER, LIKE… BETTER, WOULD RATHER (c) I like motorcycles better than cars. like + noun + better than + noun (d) I like riding a motorcycle better than driving in a car. like + -ing verb + better than + -ing verb 129
  • 130. 7-15 STATING PREFERENCES: PREFER, LIKE… BETTER, WOULD RATHER (e) Ray would rather have a cat than a dog. (f) INCORRECT: Ray would rather has a cat. (g) I’d rather buy dinner than cook it. (h) INCORRECT: I’d rather buy dinner than to cook it. I’d rather buy dinner than cooking it. would rather simple form of verb 130
  • 131. 7-15 STATING PREFERENCES: PREFER, LIKE… BETTER, WOULD RATHER (i) I’d/You’d/She’d/He’d/We’d/They’d rather have a motorcycle. Contraction of would = ’d. l (j) Would you rather have a car or a motorcycle? would rather or polite situations / offers a choice 131
  • 132. 7-15 LET’S PRACTICE than to I like to play badminton better ____ tennis. than 132
  • 133. 7-15 LET’S PRACTICE than to I prefer badminton ___ tennis. to 133
  • 134. 7-15 LET’S PRACTICE than to I would rather play badminton ____ tennis. than 134
  • 135. PHOTO CREDITS Copyright © 2008 Pearson Education and its licensors. All rights reserved. Images used under license from: • Shutterstock, Inc. • Clipart, Inc. 135 135