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1、现在完成时姓名： 构成：现在完成时由助动词have + 过去分词构成，助动词have 有人称和数的变化。第三人称单数用has，其余用have.用法：1）现在完成时通常表示在说话之前已经完成的动作或存在的状态。说话人强调的是该动作或状态对现在的结果或影响。My daughter has just gone out. 我女儿刚出去。 Im sure weve met before. 我肯定我们以前见过面。 She has arrived. 她到了。2）表示持续到现在的动作或状态，往往和包括现在在内的表示一段时间的状语连用，如recently, already, just, lately, for,
2、 since,yet等。如： I havent heard from her these days. 这些日子我没有收到她的信。 We havent seen you recently. 最近我们没有见到你。 They have been away for two years. 他们离开已经两年了。She has been with us since Monday.注意：a) since和for的区别since后接时间点，如1993，last term, yesterday, the time I got therefor后接一段时间，表示“长达多久”，如ten years, a while,
3、 two days等。Exercise: 用since和for填空1. Jim has been in Ireland _ Monday.2. Jill has been in Ireland _ three days.3. His aunt has lived in Australia _15 days.4. Mary is in her office. She has been there _ 7 oclock.5. India has been an independent country _1974.6. The bus is late. Theyve been waiting _ 2
4、0 minutes.7. Nobody lives in those houses. They have been empty _ many years.8. Mike has been ill _a long time. He has been in hospital _ October.2）表示短暂意义的动词如arrive, leave, borrow, buy, begin, start, die等，在完成时当中不能和表示一段时间的状语连用，因为它们表示的动作不可能持续。因此，不能说： He has come here for 2 weeks. The old man has died
5、for 4 months. They have left only for 5 minutes. 以上三句话可以改为：He has been here for 2 weeks.The old man has _ _ for 4 months.They have _ _ only for 5 minutes2）have (has) been 和have (has) gone的区别：表示“曾到过某地”要用 “have (has) been”; 表示“已经去某地”要用 “have (has) gone”。试比较：Where has he been? 他刚才到哪里去了？（已经回来了）Where has
6、 he gone? 他上哪儿去了？（人不在）They have been to Canada. 他们到过加拿大。（现在已经不在加拿大）They have gone to Canada. 他们到加拿大去了。（可能在路上和已经到加拿大）.3）现在完成时不能和表示过去的时间状语连用，如yesterday, last year, in 1976, two days ago, just now, when I came in，但可以和already, yet, sometimes, always, often, before, lately, recently, once, twice, ever, n
7、ever等连用。例如：She has already come. 她已经来了。I havent read it yet. 我还没读过这个。I have met him before. 我从前曾见过他。Ma Hong has always been a good student. 马红一直是个好学生。I have often seen him in the street. 我经常在街上看见他。They have never been to Yanan. 他们从未去过延安。I havent seen him lately. 我近来没看到他。Exercise:I. Fill in the blank
8、s with the proper form.1. I_ already _ (see) the film. I _ (see) it last week.2. _ he _ (finish) his work today? Not yet.3. My father _ just _ (come) back from work. He is tired now.4. Wheres Li Ming ? He _ (go) to the teachers office.5. I _ (work) here since I _ (move) here in 1999.6. So far I _(ma
9、ke) quite a few friends here.7. How long _ the Wangs _(stay) here ? For two weeks.8. I _ just _ (finish) my homework. 9. He _ (go) to school on foot every day. 10._ you _ (find) your science book yet? 11. If it _ (be) fine tomorrow, Ill go with you. 12. The students _ (read) English when the teacher
10、 came in. 13. Look! The monkey _ (climb) the tree. 14. My mother _ (come) to see me next Sunday. 15. Ive lost my pen. _ you _ (see) it anywhere? II. Choose the best answer. 1. How long have you _ here?A. come B. got C. arrived D.been2. My grandpa died _.A. at the age of my 2 B. for 2 years C. when I
11、 was 2. D. my age was 6.3. Jane has _ to BeiJing. She will come back tomorrow.A. been B. gone C. went D. never been4. It is ten years _ I last saw her.A. after B. since C. for D. that5.-Who will go to the station to meet Lorry? -I will. I _ her several times.A. met B. have met C. had met D. will mee
12、t6. -What a nice dress! How long _ you _ it? -Just 2 weeks.A. will, buy B. did, buy C. are, having D. have, had7.-Do you know Lydia very well? -Yes, She and I _ friends since we were very young. A. have made B. have become C. have been D. have turned8. The Smiths _ in China for 8 years.A. has lived
13、B. lived C. have been D. live9. -Hello, this is Mr. Green speaking. Can I speak to Mr. Black? - Sorry. He _ the Bainiao Park.A. has been to B. has gone to C. went to D. will go to10. -_ you ever _ to the US? - Yes, twice.A. Have, gone B. Have, been C, Do, go D. were, goingIII. Rewrite the sentences.
14、 1. I have been to Macau before. (改为否定句) I _ _ been to Macau before.2. He hasnt come to school because he was ill. (就划线部分提问) _ _ he come to school?3. I bough a new bike just now. (用just改写) I _ just _ a new bike.4. We began to learn English three years ago.(改为同义句) We _ _English _three years5. He has never surfed, _
