Read it carefully and learn it!
We often use EVER, NEVER, JUST, ALREADY, YET, STILL, 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 gone 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 STILL in negative sentences to show an action or situation that has lasted longer than expected.
Examples:
They still haven't left.
She still hasn't forgotten what you did.
You still haven't finished!
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.
EXERCISE:
Fill in the blanks using ever, never, just, already, yet, since , for
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