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1、六年级英语语法直通车现在完成时态 (The present perfect tense)现在完成时表示过去发生或已经完成的动作对现在造成的影响或结果,也可表示过去已经开始,一直延续到现在的动作或状态。 构成: 主语 + have/has + 过去分词 + 其他。(当主语是第三人称单数时用has,其余人称用have。过去分词:不规则动词需要特殊记忆。)否定式: 主语 + havent/hasnt + 过去分词 + 其他。疑问式: Have /Has + 主语 + 过去分词 + 其他?简略答语: Yes, 主语 + have/has.(肯定) No, 主语 + havent/hasnt.(否定)现
2、在完成时的含义之一是过去完成的动作对现在仍有影响,用以下四大标志词可以表达这种含义: * 以already, just和yet为标志 already, just和yet 表示到现在为止动作或状态已经、刚刚或还没有发生。u He has already got her help.他已得到她的帮助。u He has just seen the film.他刚刚看过这场电影。u He hasnt come back yet.他还没有回来。* 以ever和never为标志ever和never 表示到现在为止动作或状态曾经或从来没有发生过。u This is the best film I have e
3、ver seen.这是我曾经看过的最好的一部电影。u He has never been to Beijing.他从没有到过北京。* 以动作发生的次数为标志若某一动作到现在为止已经发生了若干次,则要使用现在完成时。He says he has been to the USA three times. 他说他已经去过美国三次了。* 以so far为标志so far往往表示到目前为止动作或状态已经发生。He has got to Beijing so far.到目前为止他已到了北京。She has passed the examso far.到目前为止她已经通过了考试。过去已经开始的动作一直延续到
4、现在, 甚至有可能继续延续下去,我们可以从动作“延续”的特性和“时间”点段的区分入手,进一步学习现在完成时。*“终止”、“延续”要转换英语中的动词从词义上可以分为延续性和非延续性两种,在现在完成时态中一定要注意动词这一特性,应将这类非延续性动词转换为延续性动词。如:“The cat play” has been on for half an hour.猫已经开演半个小时了。How long have you had this dictionary?这本字典你买了多久了?初中阶段常见的有:开始离去,借来还, 出生入死,买到家。comebe go out -be out leave-be away
5、 (from) begin-be on buy-have borrow-keep join-be a member die-be dead become-be return - be back arrive / stop - be here * 时间“点”、“段”须分清过去开始的动作可以延续到某一点结束,也可能继续延续,这时就要根据时间“点”、“段”选择相应的介词for或since。如:u He has been away for two years.他已走了两年。(for+时间段)u He has been an English teacher since 1992.自从1992年以来他一直
6、当英语教师。(since+过去某一时刻)Self-AssessmentI.用所给动词的适当形式填空。1. I_ already _ (see) the film. I _ (see) it last week.2. _ he _(finish) his work today ? Not yet .3. _ you _(be) to Hong Kong ? Yes, I _ (be) there twice .4. He _ just _ (finish) his homework.5. _ the young woman ever _(travel) to England?6. _ each
7、of you _(read) “Gone with the wind” yet?7. Have you _(get) any new CDs?8. My family have never _ (be) to Sanya.9. They _ ever _ (eat) fish and chips.10. I _ just _ (lose) my science book.11. Has Tom _ (finish) his work?12. I have already _ (read) this book.13. She hasnt _(return) her book yet.14. _
8、you ever _(eat ) chocolate sundaes ? No, never.15. My father _ just _ (come) back from work. He is tired now.16. Wheres Li Ming ? He _ (go) to the teachers office.17. Shanghai _ (be) a small town hundreds of years ago. Now it _ (become) a large city.18. I _ (work) here since I _ (move) here in 1999.
9、19. So far I _(make) quite a few friends here.20. How long _ the Wangs _(stay) here ? For two weeks.21. I _ just _ (finish) my homework. 22. He _ (go) to school on foot every day. 23. _ you _ (find) your science book yet? 24. I _ (tell) him about the good news.25. They _ (leave) for Los Angeles.II.
10、用for 或since填空。1. Jill has been in Ireland _Monday.2. Jill has been in Ireland _ three days.3. My aunt has lived in Australia _ 15 days.4. Margaret is in her office. She has been there _ 7 oclock.5. India has been an independent country_ 1974.6. The bus is late. Weve been waiting _ 20 minutes.7. Nobo
11、dy lives in those houses. They have been empty _ many years.8. Mike has been ill _a long time. He has been in hospital _ October.III. Choose the best answer.1. Howlonghashebeenaway? A.Twohoursbefore. B.Sincetwohours. C.Twohoursago. D.Fortwohours. 2.Ihave_thebikeforayear. A.bought B.sold C.buy D.had
12、3.Chinahas_thehostforthe2008OlympicGamessinceJuly132001. A.become B.been C.became D.turned 4.Hergrandfather_foroverfiveyears. A.hasbeendead B.hasbeendied C.died D.hasdied 5.Imsorrytohearthattheboy_homefortwodays. A.hasleft B.hasbeenawayfrom C.left D.isawayfrom 6.ChenPing_theCDplayerforaweek. A.hasbo
13、ught B.hashad C.hadhad D.hasborrowed 7.“_ reading the book yet?” “Yes, Ive already finished it.”A.Have you finished B.Were you finishingC.Had you finished D.Are you finishing8. I _ this coat for a long time but it still looks quite new.A.wasnt have B.have had C.hadnt D.have bought9. This evening par
14、ty _. You are a little late.A.just began B.just has beganC.has just begun D.begins10.My brother _ Wuhan and will stay there for some time.A.has been in B.has come fromC.has gone to D.has been to11. I _ her since she was a little girl.A.knew B.know C.had known D.have known12. She _ a middle school st
15、udent for more than one year.A.become B.have become C.was D.has been13.My brother _ the army for three years.A.has joined B.joined C.has been in D.has joined in14. “Where is Lucy?” “Oh, she _ out of the classroom.”A.has went B.has just gone C.just go D.have just gone15. “Lily, _ to the Great Wall?”
16、“No, I _ there before.”A.have you never gone, I have ever goneB.have you ever been, have never beenC.did you go, I didnt never goD.you have ever been, never have been16.“Where _ Betty?” “I _ the library.”A.have you been, have been toB.have you gone, have gone toC.did you go, goD.go, go17. “When did you get up, Tom?” “I _ for twenty minutes.”A.get up B.have got up C.have been up D.have gone up18.“_ the film?” “Yes, I _ it last Sunday.”A.Have you see, see B.Have you seen, sawC.Did
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