现在完成时讲解及练习-Tina修改知识交流.doc

现在完成时讲解及练习 Tina修改精品资料现在完成时讲解（1）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.现在完成时的否定式直接在助动词后面加上not、疑问式是把助动词提到主语之前。以study 为例，其否定式、疑问式和简单回答形式如下：否定式疑问式I have not (havent) studied.Have I studied?You have not (havent) studied.Have you studied?He has not (hasnt) studied.Has he studied?否定疑问式简单回答（肯定/否定）Have I not (Havent I) studied?Yes, you have. No, you havent.Have you not (Havent you) studied?Yes, I have. No, I havent.Has he not (Hasnt he) studied?Yes, he has. No, he hasnt.（2）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, 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, 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 _ 20 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 for 4 months. They have left only for 5 minutes. 现归纳总结一下由非延续性动词到延续性动词的转换：arrive到达-be here begin(start)开始-be on die死亡 -be dead come back回来-be back leave 离开-be away (from) borrow借来-keep finish完成-be over buy买-have open打开 -be open join加入，参加-be in close关闭-be closed marry结婚- be married 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 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, never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。Exercise:I. Fill in the blanks with the proper form.1. I_ already _ (see) the film. I _ (see) it last week.2. _ he _ (finish) his work today? Not yet.4. Wheres Li Ming ? He _ (go) to the teachers office.5. I _ (work) here since I _ (move) here in 1999.6. So far I _(make) quite a few friends here.7. How long _ the Wangs _(stay) here ? 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 came in. 14. My mother _ (come) to see me next Sunday. 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 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 meet6. -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 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. 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.6. They have been here since 2000. (对划线部分提问) _ _have they been here?7. The old man _ last year. He has _ _for a year. (die) （动词填空）8. Miss Gao left an hour ago. (同义句转换)Miss Gao has _ _ _ an hour ago.三、结束性动词转换为以下延续性动词或者表示可以延续的状态的短语。1. Mr. Li began to teach English in this school in 1999.（同义句） Mr. Li _ _ English in this school since 1999.2. The factory opened ten years ago.（同义句 The factory _ _ _ for ten years.3. John left Beijing three years ago. （同义句）John_ _ _ _ Beijing for three years.4. His company opened in 2003. （同义句His company _ _ _ since 2003.5. My father bought the car half a year ago. （同义句My father _ _ the car _ half a year.六、用have / has been to / in, have gone to及go的各种形式填空。1) Where is Jack? He _ his country.2) David _ the park just now.3) John _ England since he came back.4) The Smiths _ Beijing for years.6) _ you ever _ America? - Yes, I _ there many times.7) I _ this school since three years ago.8) Where is Jim? He _ the farm.9) When_ he _? He _ an hour ago.10) Would you like to _ to the zoo with me? -Yes, but I _ there before.12) He often _ swimming.七 用never, ever, already, just, yet, for, since填空1. I have _ seen him before, so I have no idea about him.2. Jack has _ finished his homework.3. Mr. Wang has taught in this school _ ten years.4. “Have you _ seen the film?” “No, I have _ seen it.”5. “Has the bus left _?” “Yes, it has _ left.”八. 用适当的时态填空：1.Shes _ (live) here ever since she was ten.2.Both of them _ (be) in Hongkong for ten days.3.Both of them _ (come) to Hongkong ten days ago.4. Half an hour _ (pass) since the train _ (leave).6. _ you _ (find) your watch yet?7. -Are you thirsty? -No I _just _ (have) some orange.8. We - already _ (return) the book.11. My father _ (read) the novel twice.12. I _ (buy) a book just now.13. I _ (lost ) my watch yesterday.仅供学习与交流，如有侵权请联系网站删除 谢谢8