文档介绍：
第 1 页 共 t) some flowers in the garden last week.
I have sent (send) the letter.
He has come (come ) back home, he is watching (watch) TV now.
David finished (finish) his homework just now.
The monkeys are full, because we have fed (feed) them.
A: I have lost (lose) my purse!
B. Bad luck! When did you lose (lose) it?
A: I lost (lose) it last night.
与现在完成时连用的几个副词：already, just, ever, yet, never
确定句: already, just
疑问句和否定句: ever, yet, never
yet 常置于句末
already, never, ever just一般置于助动词have/has之后，过去分词之前.
例：用 already, just或never, yet完成句子
1) I have been to many big cities, but I have never been to Shanghai.
2) Most of us have already finished our compositions.
3) Have they taken down the old pictures yet ? No, not yet .
4) He has already visited Beijing twice.
5) I have just heard the news. I know it.
7. 现在完成时中的for和since
(1)for + 一段时间(用How long提问)
We have known each other for ten years. 我们相识10年了。
(2)since + 句子/详细时间
since 引导的短语或从句用How long提问
①since+过去