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1、Unit1 Past and present Grammar (consolidation),Learning aims,1.巩固现在完成时的基本结构、基本用法和常见的动词过去分词。 2.理解并正确运用常和现在完成时连用的时间表达方式。 3.能够在语境中正确运用现在完成时。,Practice 1 1.写出下列动词的过去分词（5,arrive_ finish_ change_ carry_ stop_ come_ do_ hold_ win_ write_ build_ catch_ keep_ forget_ tell_ be_ have_ take_ know_ draw_ see_ eat
2、_ plan_ sell_,2.完成课课练P7 （四）（3 Keys: 1.have worked 2.Has; turned; has 3.Have; cooked; havent 4.hasnt; yet 5.havent told 6.How long,这里的have、has不是有的意思，它是和后面的过去分词构成现在完成时，它具有助动词的特性。,你会识别现在完成时？,_ 通常与表示过去确切时间的时间状语连用。例如：yesterday, last week, in 2002, an hour ago等； _ 则常与just, already, ever, never，just, recen
3、tly, yet等副词和these days, this week, since ., for .等表示一段时间的时间状语连用。,How to use them?,Translate the following sentences,1.我们已经完成了家庭作业。 2.他从没参观过北京。 3.你曾经看过这部电影吗？ 4.他们刚刚吃了你的食物。 5.他还没有把那本书还给我。 6.最近我读了许多书。 7.自2004年以来我就是一名老师。 8.我在东海居住好多年了。,2.Complete the sentences using the present perfect tense.,They _(fini
4、sh) their homework. 2. Mr and Mrs Li _ (not come) back yet. 3. John _(play) this computer game a few times.,havent come,have finished,has played,4. We _(not see) that film yet. 5. Mr Dong _(repair) over ten bicycles since last Monday. 6. You _(not visit) me for a long time.,havent seen,has repaired,
5、havent visited,7. He _ (not finish) the homework yet. He will try to finish it quickly. 8. My family _ (live) in Nanjing since 1996. 9. _ you _ (know) him since then?,hasnt finished,has lived,Have,known,10. They _ already _ (decide) to go to Kunming for the holiday. 11. We _ (move) to the new flat s
6、ince last month. 12. The girl _ (learn) English for about two years.,have,decided,have moved,has learned,13. My father went to Beijing two weeks ago. I_ (not see) him since then. 14. _ Tom _ (write) letters to you recently? 15. Jacks mother isnt at home. She _ (go) to the supermarket. 16. The film _
7、 (be) on for about 20 minutes. We missed the beginning.,havent seen,Has,written,has gone,has been,3.Complete the conversation using the correct forms of the verbs in brackets.,Millie: (1)_ you _(see) any exhibitions recently, Sandy? Sandy: No, I (2)_. What about you? Millie: Well, I (3)_(see) one. I
8、 _ it at the history museum last week. Sandy: Whats it about?,Have seen,have seen,havent,saw,Millie: I (4)_(forget) the title. Its about changes in Beijing over the past century. Sandy: Oh, yes. I (5)_(hear) about it.(6)_ your cousin _(go) with you? Millie: No, he (7)_. He (8)_ (be) very busy this w
9、eek.,have forgotten,have heard,Has,gone,hasnt,has been,Sandy: Did you enjoy the exhibition? Millie: Yes, I did. I (9)_(learn) a lot about Beijings past and present. Its a good exhibition and I (10)_(decide) to see it again. Do you want to go with me? Sandy: Sure. I wont miss it this time.,have learn
10、t,have decided,如何区别现在完成时和一般过去时 1. I saw the film yesterday. 我昨天看了那部电影。 I have seen the film. 我已经看过那部电影了。 区别一 _ 的谓语动词用动词的过去式，而 _ 的谓语基本构成是“have / has + 动词的过去分词形式”。,一般过去时,现在完成时,2. I had supper an hour ago. 我一小时前吃了晚饭。 I have just had supper. 我刚刚吃过晚饭。 区别二 _ 通常与表示过去确切时间的时间状语连用。例如：yesterday, last week, in
11、2002, an hour ago等；,一般过去时,_ 则常与just, already, ever, never，just, recently, yet等副词和these days, this week, since ., for .等表示一段时间的时间状语连用。,现在完成时,3. He went to Guilin in 1998. 他在1998年去过桂林。 （这句话只说明他在过去某个时间去 过桂林。） He has never been to Guilin. 他从来没有去过桂林。 （这句话说明他没去过桂林，而且强 调至今都没去过。）,区别三 _侧重陈述一件过去的事情，所表示的动作或状态对
12、现在无影响；_ 表示的动作或状态与现在有联系，侧重强调这一动作对现在所造成的影响。,一般过去时,现在完成时,请从各题后所给的A、B、C、D四个选项中选出最佳答案。,1. I have seen the play already. When_ you _ it? A. have, see B. will, see C. did, see D. did, seen 2. Mr Black _ in China for five years. A. living B. has lived C. live D. is going to live,C,B,3. Why _ she _ angry? Be
13、cause he _ at him just now. A. did get, shouted B. hasgotshouted C. did get has shouted D. hasgothas shouted,A,4. You _ me waiting for two hours. I _ for you since five. A. keptwaited B. have keptwaited C. kepthave waited D. have kepthave waited,C,5. The boys_ only two subjects last term, but this t
14、erm they_ five. A. have, have B. had, had C. had, have D. have had, have,C,6. He _ to draw horses already. When _he ?”. Last year. A. learnedhas B. learneddid C. has learnedhas D. has learneddid,D,7. Mr Black _ in China since five years ago. A. lived B. has lived C. lives D. is going to live,B,8. We _ trees last Sunday. So far we _ over 3，000 trees there. A. planted；planted B. planted；have planted C. have planted；planted
