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1、精品资料欢迎下载一、时态讲解:现在完成时(1)构成:现在完成时由助动词have +第三人称单数用has,其余用have.过去分词构成,助动词have有人称和数的变化。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 (haven t) studied.Have I studied?You have not (haven t) studied.Have you studied? He has not (hasn t) studied.Has he studied?(2)用法:1
2、)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。I m sure we ve 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 , sinceyet,等。如:I haven t heard from her these days这.些日子我没有收到她的信。We have
3、n t 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 _
4、 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 o'clock.5. India has been an independent country _1974.6. The bus is late. They've been waiting _ 20 minutes.7. Nobody lives in those houses. They hav
5、e 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.
6、××以上三句话可以改为:精品资料欢迎下载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
7、)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
8、has already come.她已经来了。I haven t 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 Yan他们an从.未去过延安。I haven't seen him lately. 我近来没看到他。Irregular VerbsBase FormPast FormPast Parti
9、ciplebearborebornbeatbeatbeatenbecomebecamebecomeblowblewblownbringbroughtbroughtbuildbuiltbuiltbuyboughtboughtcatchcaughtcaughtchoosechosechosencomecamecomedodiddonedrinkdrankdrunkdrivedrovedriveneatateeatenfallfellfallenfindfoundfoundflyflewflowngetgotgotgivegavegivengowentgonegrowgrewgrown精品资料欢迎下
10、载havehadhadhearheardheardkeepkeptkeptleaveleftleftloselostlostmakemademadeputputputreadreadreadrunranrunsaysaidsaidseesawseensellsoldsoldsendsentsentsingsangsungsinksank/sunksunktaketooktakenteachtaughttaughtwritewrotewroteam, iswasbeenarewerebeenExercise:I. Fill in the blanks with the proper form.1
11、. 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. Where s Li Ming ? He _ (go) to the teacher s office.5. I _ (work) here since I _ (move) here in 1999.6. So far I _(make) quite a few friend
12、s 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, I'll go with you.12. The students _ (read) English when the teacher came in.13. Look! Th
13、e monkey _ (climb) the tree.14. My mother _ (come) to see me next Sunday.15. I've lost my pen. _ you _ (see) it anywhere?1. have, seen, saw2. Has, finished3. has, come4. has gone5. have worked, moved6. have made7. have, stayed8. have, finished9. goes10. have, found11. is12.were reading13. is cli
14、mbing14. is coming15. Have, seenD,c,b,bb,d,c,c,b,b精品资料欢迎下载II. Choose the best answer.1.How long have you _ here?A. comeB. gotC. arrivedD. been2.My grandpa died _.A. at the age of my 2B. for 2 yearsC. when I was 2.D. my age was 6.3.Jane has _ to BeiJing. She will come back tomorrow.A. beenB. goneC. w
15、entD. never been4.It is ten years _ I last saw her.A. afterB. sinceC. forD. that5.-Who will go to the station to meet Lorry?-I will. I _ her several times.A. metB. have metC. had metD. will meet6. -What a nice dress! How long _ you _ it? -Just 2 weeks.A. will, buyB. did, buyC. are, havingD. have, ha
16、d7.-Do you know Lydia very well?-Yes, She and I _ friends since we were very young.A. have madeB. have becomeC. have beenD. have turned8.The Smiths _ in China for 8 years.A. has livedB. livedC. have beenD. live9.-Hello, this is Mr. Green speaking.Can I speak to Mr. Black?- Sorry. He _ the Bainiao Pa
17、rk.A. has been toB. has gone toC. went toD. will go to10. -_ you ever _ to the US? - Yes, twice.A. Have, goneB. Have, beenC, Do, goD. were, goingIII. Rewrite the sentences.1. I have been to Macau before. ( 改为否定句 )I _ _ been to Macau before.2. He hasn t come to school because he was ill. (就划线部分提问)_ _
18、 he come to school?3. I bought 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, _ _? (改成反意疑问句)6. They have been here since 2000. (对划线部分提问 )_ _have they been here?7. The old man _ last year
19、. 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.精品资料欢迎下载现在完成时练习题一、翻译下列句子:1. 你曾经吃过鱼吗?2. 我刚刚丢了我的数学书。3. 我以前从来没去过那个农场。4. 他已经吃过午饭5. 你已经看过这部电影了吗?6. 我哥哥还没回来。7.这本字典我已买了三年了。8.他离开中国三年了。9.我认识他们五年了。10.他们已去了美国五年了。11.自从他搬到济宁,他就住这儿了。12.我妹妹成为一个大学生已经三年。13.自从 19
20、99 年以来他们就认识。14.我来到这个学校已3 年多了。二、用 since 和 for 填空1._two years2._two years ago3._last month4._ 19995._yesterday6._ 4 o clock7._4 hours8._an hour ago9. _we were children10._ lunch time11._she left here12. He has lived in Nanjing _ the year before last.13. I ve known him _ we were children.14. Our teacher has studied Japanese _ three years.15. She has been away from the city _ about ten years.
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