PRESENT PERFECT + EVER, NEVER, JUST, ALREADY, YET, SINCE, FOR

We often use EVER, NEVER, JUST, ALREADY, YET, SINCE and FOR with the present perfect tense.

We use EVER in interrogative sentences to express " at any time":
Examples:    
Have you ever been to the United States?
Have you ever traveled by train?
Have you ever failed a class?


We use NEVER in affirmative sentences (but the meaning is negative) to express "at no time".
Examples:
I have never cheated in an exam.
My son has never been to Moscow.
My brother has never travelled to London.

We use JUST to express a recently completed action.
Examples:
The cat has just caught a bird.
The guests have just arrived.
I have just finished my homework.


We use ALREADY to express that something has happened sooner than expected.
Examples:
Don't forget to bring your book! Oh, I have already brought it.
The boys are going to pack, aren't they? No. They have already packed.
Is Adam going to buy a new car? No, he isn't. He has already bought it.


We use YET in interrogative and negative sentences and it suggests a time later than expected.
Examples:
Have you done your homework? No, I haven't done it yet
Has your father seen your report? No, he hasn't seen it yet
Have the visitors arrived? No, they haven't arrived yet.

We use SINCE to express a point in the time.
Examples:
She has lived here since 1980.
Alice has been married since March 2nd.
They have been at the hotel since last Tuesday.

We use FOR to express a period of time.
Examples:
I have worked here for five years.
We have taught at this school for a long time.
They have been at the hotel for a week

Now do this exercise.

Complete the sentences with the Present Perfect of the verbs in brackets and with the correct word (ALREADY, EVER, NEVER, JUST, YET, FOR, SINCE).;

1. We can't eat chips again. We _____________ (have) them three times this week.

2. Better: _________________ (you/clean) the bathroom _________?

    Billy: Yes, I _____________________ (do) it. I did it two hours ago.

3. _______________________ (your sister/ see) the new film _________?

4. Tim _________________ (be) a teacher _______ 1996.

5. Jim is ok. I _____________ (see) him in the street.

6. Your family _____________ (live) in Bogota _______ ten years.

7.  We are going to a concert on Friday but we ______________ (not buy) the tickets ________.

8. They ______________ (fly) in a helicopter. This is the first time.

9. ____________________ (meet) a famous person?