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1、精品文档现在完成时(The present perfect tense)的用法小结一、现在完成时的结构: 现在完成时的被动语态结构: 现在完成时的进行时态: 二、 用法:现在完成时既涉及 ,又联系。用法一:表示过去发生或已经完成的某一动作对现在造成的影响或结果。常与just (刚刚),already (已经),never(从来没有),ever(曾经),before(以前),yet (仍然),once (次),twice(两次),many times (很多次),how many times (多少次),so far (迄今为止),during the past( last)three year
2、s (最近三年来) 等连用。用法二:表示过去已经开始,一直延续到现在的动作或状态。时间状语有:' for+表示一段时间的词语 I have taught English for 19 years。 since+ 表示过去时间点的词语 He has been at this school since 1986. since+表示过去的时间状语从句 I have lived here since I was born. si nce+ 段时间+ ago. I have known him since 20 years ago.三、 现在完成时态中可以和表示一段时间状语(for, since
3、, how long, al l one ' s life连用的动词必须是表示延续的情况或动作的动词,即延续性动词。如:be, have, know , live , work, study, learn, teach, keep, speak,talk, draw, wait, wear, walk , sleep, drive, write , do, clean 等。Ifor nearly 20 years. 我当老师已经有 20 年了。How longhere?他住在这多久了?四、 延续T 现在”在内的(到说话时仍未结束)表示一段时间的状语连用。如thismorning , t
4、oday, this week, these daysHe has bee n to Beiji ng three times this year.五、英语中还有一些动词的意义决定它们所表示的动作不能延续,只是一瞬间就结束的动作,这类动词叫做 非延续性动词”,常见的有: come , go , arrive , reach , see, hear , close , open, leave, begin , start , lose , buy , fall, join, die , get up , become , borrow , lend , find , finish , recei
5、ve 等。这些动词可用于现在完成时,说明某个动作的结果还存在,但不能和表示一段时间的状语(how Iong , for , since)连用。判断正误:He has come back.()He has come back for two hours ()六、 如何通过与一般过去时做比较,进一步掌握现在完成时? 一般过去时和现在完成时的动作都发生在过去,但意义却不同.(1) -一般过去时只表示过去的动作或状态,和现在不发生关系。Y-现在完成时表示过去发生的某一动作对现在造成的影响,强调的是现在。如:I learned ten English songs (说明过去学过,现在是否记得,不是本句的
6、内容)I have learnt ten English songs. (learn发生在过去,但强调我现在懂英语歌曲)I cleaned the blackboard half an hour ago.(只说明 擦"和其发生的时间)I have cleaned the blackboard.(说明现在黑板是干净的)The teacher has written some new words on the blackboard (黑板上现在有单词)The teacher wrote some new words on the blackboard (黑板上现在没有单词)(2) 一般过
7、去时可以和表示过去的时间状语连用,如:yesterday, last year, three days ago, just now,等。现在完成时不能和表示过去的时间状语连用,其时间状语可以是 si nee,for,just, ever, never, before, already, yet , so far,all one ' s等e现在完成时专项练习一 高考链接:从所给的A、B、C、D中选出最佳选项1. I got caught in the rain and my suit.A. has ruinedB. had ruined C. has bee n ruined D. ha
8、d bee n ruined2. The mayor of Beiji ng says that all con structi on work for the Beiji ng Olympicsby 2006.A. has bee n completedB. has completed C. will have bee n completedD. will have completed3. The wi ndow is dirty.- I kno w. Itfor weeks.A. hasn ' t cleanedB. didn ' t clean C. wasn '
9、 t cleaned D. hasn ' t been cleaned4. - George and Lucy got married . Did you go to their weddi ng?精品文档精品文档- No, I . Did they have a big wedding?A. was not invited B. have not been invited C. hadn ' t been invitedD. didn ' t invite5. The construction of the two new railway linesby now.A.
10、 has completedB. have completed C. have been completed D. has been completed6. I like these English songs and they _many times on the radio.A. taught B. have taught C. are taught D. have been taught7. I heard they' ve promoted Tom, but he didn' t mention when we talked on the phone.A. to pro
11、moteB. having been promotedC. having promoted D. to be promoted8. I ' umresAndrew will win the first prize in the final. I think so. He for it for months.A. is preparingB. was preparing C. had been preparing D. has been preparing9. By the time he realizes he into a trap, it'll be too late fo
12、r him to do anything about it.A. walksB. walkedC. has walkedD. had walked10. Professor James will give us a lecture on the Western culture, but when and where yet.A. hasn 't been decided B. haven 't decidedC. isn 't being decided D. aren 't decide二单句改错1. The book has been given him.2
13、. The most comfortable service has been offered us by him.3. The new bridge over the Yellow River has just completed.4. Many new buildings were built since 1980.5. Something bad has been happened to him三 . 用动词的正确形式填空1. We (study ) in Little Star English since two years ago.2. Tsunami (not happen) in
14、 the south-east of China recently.3. My father (read) the novel twice.4. She (buy) a Hello Kitty for you , hasn' t she?-Yes, she .5. This is the nicest park I (see).6. They (study) English for a long time.四 . 根据汉语提示完成句子1你最近收到你爸爸的来信了吗? you your father 2. 我已经很长时间没有拜访过我姑姑了。 I my aunt 3. Simon 曾经去过几次中国。 Simon China for _精品文档4. 他们已经去电影院了 Theythe cinema.5. Smith夫妇还没有回来。The Smiths6. 脏衣
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