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Modal Verbs of Obligation and
        Prohibition!


I am here to tell you about
Modal Verbs of
Obligation and
Prohibition!
Are you ready?
Modal Verbs of Obligation and
        Prohibition!

What are
Modal Verbs of
Obligation and
Prohibition!
Modal Verbs of Obligation and
           Prohibition!




• Must / mustn’t
• Have to / don’t have to
Modal Verbs of Obligation and
        Prohibition!
Present          Positive                      Negative

must / mustn’t   strong obligation (possibly   Prohibition
                 based on the speaker’s        • You mustn’t smoke here.
                 opinion)
                 • I must study today.

have to /        strong obligation (possibly   no obligation
don’t have to    from authority/               • I don’t have to work on
                 compulsory)                   Sundays
                 • Children have to go to      • You don’t have to eat
                 school.                       anything you don’t like.
                 (sometimes ‘have got to’)
Modal Verbs of Obligation and
        Prohibition!

 Do you
 understand?
 You are going to
 look at some
 photos and make
 sentences!
Modal Verbs of Obligation and
        Prohibition!



The following things
are prohibited

So now make some
sentences!
You mustn’t eat
  junk food!
You mustn’t use
your phone while you're
       driving!
You mustn’t
drink alcohol!
You mustn’t
  smoke!
You mustn’t
  come in!
You mustn’t
sleep in class!
You mustn't
get stressed!
Modal Verbs of Obligation and
        Prohibition!



The following things
are obligatory

So make some sentences!
You must
 eat well!
You must
 keep fit!
You must recycle
    rubbish!
You must speak
English in class!
You must do
the homework!
Modal Verbs of Obligation and
        Prohibition!



The following things
are compulsory

So make some sentences!
You have to
have a passport
  to travel to
another country!
You have to
look for a job!
You have to
 pay taxes!
In most of the world you have to drive
              on the right!
In some countries you have to drive on
                the left!
They have to
wear a uniform!
Modal Verbs of Obligation and
        Prohibition!

The following things
are not obligatory




So make some
    sentences!
Don’t have to =
You don’t have to
 get up early at
  the weekend!
You don’t have to
  wear a suit at
  the weekend!
You don’t have to
work on holiday!
DO NOTHING!!!
You don’t have to
  do anything
   on holiday!
         DO NOTHING!!!
The End! You
don’t have to do
  any more!
REMEMBER:
         Modal Verbs of
    Obligation and Prohibition!
Present          Positive                      Negative

must / mustn’t   strong obligation (possibly   Prohibition
                 based on the speaker’s        • You mustn’t smoke here.
                 opinion)
                 • I must study today.


have to /        strong obligation (possibly   no obligation
don’t have to    from outside / compulsory)    • I don’t have to work on
                 • Children have to go to      Sundays
                 school.                       • You don’t have to eat
                 (sometimes ‘have got to’)     anything you don’t like.

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Modal Verbs of Obligation and Prohibition Explained

  • 1. Modal Verbs of Obligation and Prohibition! I am here to tell you about Modal Verbs of Obligation and Prohibition! Are you ready?
  • 2. Modal Verbs of Obligation and Prohibition! What are Modal Verbs of Obligation and Prohibition!
  • 3. Modal Verbs of Obligation and Prohibition! • Must / mustn’t • Have to / don’t have to
  • 4. Modal Verbs of Obligation and Prohibition! Present Positive Negative must / mustn’t strong obligation (possibly Prohibition based on the speaker’s • You mustn’t smoke here. opinion) • I must study today. have to / strong obligation (possibly no obligation don’t have to from authority/ • I don’t have to work on compulsory) Sundays • Children have to go to • You don’t have to eat school. anything you don’t like. (sometimes ‘have got to’)
  • 5. Modal Verbs of Obligation and Prohibition! Do you understand? You are going to look at some photos and make sentences!
  • 6. Modal Verbs of Obligation and Prohibition! The following things are prohibited So now make some sentences!
  • 7.
  • 8. You mustn’t eat junk food!
  • 9.
  • 10. You mustn’t use your phone while you're driving!
  • 11.
  • 13.
  • 14. You mustn’t smoke!
  • 15.
  • 16. You mustn’t come in!
  • 17.
  • 19.
  • 21. Modal Verbs of Obligation and Prohibition! The following things are obligatory So make some sentences!
  • 22.
  • 23. You must eat well!
  • 24.
  • 26.
  • 27. You must recycle rubbish!
  • 28.
  • 30.
  • 31. You must do the homework!
  • 32. Modal Verbs of Obligation and Prohibition! The following things are compulsory So make some sentences!
  • 33.
  • 34. You have to have a passport to travel to another country!
  • 35.
  • 36. You have to look for a job!
  • 37.
  • 38. You have to pay taxes!
  • 39.
  • 40. In most of the world you have to drive on the right! In some countries you have to drive on the left!
  • 41.
  • 42. They have to wear a uniform!
  • 43. Modal Verbs of Obligation and Prohibition! The following things are not obligatory So make some sentences!
  • 45.
  • 46. You don’t have to get up early at the weekend!
  • 47.
  • 48. You don’t have to wear a suit at the weekend!
  • 49.
  • 50. You don’t have to work on holiday!
  • 52. You don’t have to do anything on holiday! DO NOTHING!!!
  • 53. The End! You don’t have to do any more!
  • 54. REMEMBER: Modal Verbs of Obligation and Prohibition! Present Positive Negative must / mustn’t strong obligation (possibly Prohibition based on the speaker’s • You mustn’t smoke here. opinion) • I must study today. have to / strong obligation (possibly no obligation don’t have to from outside / compulsory) • I don’t have to work on • Children have to go to Sundays school. • You don’t have to eat (sometimes ‘have got to’) anything you don’t like.