Present Perfect tense rules, yet, already, just. For and since.

1. The Present Perfect Tense
Form and use

2. MEANING
The present perfect tells us
about the past and the present.

3. Use
When we use the present perfect, we see
things as happening in the past but having
a result in the present.
I’ve bought
some
presents.

4. Form
POSITIVE
I/you/we/they have (they’ve) gone.
He/she/it has (it’s) gone.
have/has + past participle

5. NEGATIVE
I/you/we/they have not gone.
He/she/it hasn‘t gone.

6. INTERROGATIVE
Have I/you/we/they gone?
 Has he/she/it gone?
SHORT ANSWERS
Yes, I have. / No, I haven’t.
Yes, he has. / No, he hasn’t.

7. The plane has landed safely.

8. They have graduated. Congratulations!

9. Federer has lost the semifinal match in Melbourne .

10. Nole has won the Australian Open for the second time.

11. RELATED WORDS
We use the present perfect with today and
phrases with this, e.g. this morning, this week,
this year.
EXAMPLE: I have been here since this morning.
We've done
quite a good job
today.

12. When we ask / talk about our
experience
Have
you ever
been to
London?
No, I
haven’t.
And you?

13. With lately and recently
meaning.
Have I told
you lately
that I love
you?

14. JUST
With just to express the action finished a short
time ago
We have just come back from our holiday.

15. ALREADY
With already meaning “sooner than expected”
I’ve already
finished my
dinner.

16. YET
With yet in negative sentences and questions
when we expect something to happen
Sorry, Nick. I
haven’t finished
the homework yet.

17. FOR/SINCE
We use for to say how long this period is (for
three days).
We use since to say when the period began
(since Friday).
Me, too. I haven’t
grabbed a bite
since Friday.
Thanks. I haven’t
eaten anything for
three days.

18. NEVER / EVER
We use NEVER as: NOT AT ANY TIME in the
past, including now
I have never seen such a beautiful sunset

19. We use EVER as: at any time, including the
present (only in questions)
Have you ever ridden a horse?

20. PRACTISE
She ___________________ a letter to me. (write)
The team ______________ the match (win)
We ___________________ our work. (not/finish)
Why _____ you _________ the bill? (pay)
_______the train ________? (depart)
He __________________ his mistakes.
(not/realize)
Sandra _________________ her bag. (lose)