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[중급문법] UNIT 7. Present perfect (1) (I have done)
최고관리자  |  14-05-05 15:03

A. Study this example situation:
Tom is looking for his key. He can't find it. He has lost his key.
'He has lost his key' = He lost it and he still hasn't got it.

Have/has lost is the present perfect simple:
I/we/they/you have (= I've etc.) finished/lost/done/been etc.
he/she/it has (= he's etc.) finished/lost/done/been etc.

The present perfect simple is have/has + past participle.
The past participle often ends in -ed (finished/decided etc.), but many
important verbs are irregular (lost/done/been/written etc.).

B. When we use the present perfect there is always a connection with now.
The action in the past has a result now:
* 'Where's your key?' J don't know. I've lost it.' (I haven't got it now)
* He told me his name but I've forgotten it. (I can't remember it now)
* 'Is Sally here?' 'No, she's gone out.' (she is out now)
* I can't find my bag. Have you seen it? (do you know where it is now?)

We often use the present perfect to give new information or to announce a recent happening:
* Ow! I've cut my finger.
* The road is closed. There's been (= there has been) an accident.
* (from the news) The police have arrested two men in connection with the robbery.

C. You can use the present perfect with just, already and yet:
Just = a short time ago:
* 'Would you like something to eat?' 'No, thanks. I've just had lunch.'
* Hello. Have you just arrived?

We use already to say that something happened sooner than expected.
* 'Don't forget to post the letter, will you?' 'I've already posted it.'
* 'What time is Mark leaving?' 'He's already gone.'

Yet = 'until now' and shows that the speaker is expecting something to happen.
Use yet only in questions and negative sentences.
* Has it stopped raining yet?
* I've written the letter but I haven't posted it yet.

D. Note the difference between gone (to) and been (to):
* Jim is away on holiday. He has gone to Spain. (= he is there now or on his way there)
* Jane is back home from holiday now. She has been to Italy. (= she has now come back from Italy)