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1、Grammar- Present Perfect Tensecharles1. 现在完成时表示发生在过去的动作现在完成时表示发生在过去的动作对现在所造成的结果和影响。对现在所造成的结果和影响。 e.g. He has just come back from work. (影响影响:他现在在家他现在在家) He has gone out. (影响影响: 他不在这儿他不在这儿)2. 表示从过去某时开始而延续至今的动表示从过去某时开始而延续至今的动作或状态作或状态, 只能用于带有延续意义的只能用于带有延续意义的动词动词, 常与常与for, since等连用。等连用。 e.g. They have b
2、een friends for many years. He has worked in this factory since he was 28.3. 现在完成时可以用在条件或时间状语现在完成时可以用在条件或时间状语从句中从句中, 表示将来某个时刻之前已经完表示将来某个时刻之前已经完成的动作。成的动作。 e.g. Ill go home as soon as I have finished my homework. Please lend me that book if you have finished reading it. 现在完成时表示某一已经完成的动作对现在完成时表示某一已经完成的
3、动作对现在造成的结果或影响现在造成的结果或影响, 强调的是现在强调的是现在的情况的情况,所以不能与表示过去的时间状所以不能与表示过去的时间状语连用语连用; 一般过去时只表示某一动作或一般过去时只表示某一动作或状态在过去发生或存在过状态在过去发生或存在过, 与现在不发与现在不发生联系生联系,它可以与表示过去的时间状语它可以与表示过去的时间状语连用。连用。现在完成时与一般过去时的区别现在完成时与一般过去时的区别: :He has read that book. (说明他现在知道那本书的内容说明他现在知道那本书的内容)He read that book last year. (只说明他去年读过那本书
4、只说明他去年读过那本书 )He has gone to America. (他现在不在此地他现在不在此地,在美国在美国)He went to America. (只说明他去过美国只说明他去过美国)1.- Do you know our town at all ? - No, this is the first time I _ here. (NMET92) A. was B. am coming C. came D. have been DLets try more.Lets try more. 2. I wonder why Jenny _ us recently. We should ha
5、ve heard from her by now . (NMET 2002) A. hasnt written B. doesnt write C. wont write D. hadnt write A3. - Im sorry to keep you waiting . - Oh, not at all. I _ here only a few minutes . (NMET94) A. have been B. had been C. was D. will be A4. - Who is Jerry Cooper? - _? I saw you shaking hands with h
6、im at the meeting. (NMET97) A. Dont you meet him yet B. Hadnt you met him yet C. Didnt you meet him yet D. Havent you met him yetD5. The old couple have been married for 40 years and never once _ with each other. (NMET2003) A. they had quarreled B. they have quarreled C. have they quarreled D. had t
7、hey quarreledC6. - How long have you _ the computer ? - Over two months. A. had B. bought C. got D. have AmovedComplete the conversation. Use thepreset tense of the verbs in brackets, and for or since where appropriate. Mike: Hi, Kate. Kate: Hi, Mike. Mike: I havent seen your brother around for a lo
8、ng time. _ he _ (move ) to a new neighborhood? HasKate: No, he _ _ (move ) to a new country! He _ _ (be) in Australia _ last year.Mike: Australia! Thats great country. _ you ever _ (be) there?hasnt movedhas been sinceHave beenKate: No, I _ never _ (be) there, but I _ _ (decide) to go later this year.Mike: Great! _ your brother _ (send) you any photos _ he moved there?haveHave decidedHassincebeensent Kate: Yes, in fact, I _ just _ (receive) some . Here they are . This is his new house . He _ recently _ (finish) decorating it .receivedhas finishedhave
