现在完成时用法教案.doc

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1、Four short words sum up what has lifted most successful individuals above the crowd: a little bit more.-author-date现在完成时用法教案现在完成时用法The Present Perfect课前热身1.The famous writer _ one new book in the past two years . . writes B.wrote C.has written2,I _ the League for 5 years so far. A. joined B. have jo

2、ined C. have been in 3.Mary and Rose _friends since they met in 2000. A.have made B.have been C.made D. have become4.Our country _ a lot so far .Yes. I hope it will be even _ . . has changed ; well . changed ; good . has changed ; better 5. _ you _ your homework yet ?Yes. I _ it a moment ago. .Did;

3、do; finished .Have; done; finished .Have; done; have finished 现在完成时一 基本结构:助动词have/has+过去分词(done)二句型:肯定句:主语+have/has+过去分词+其他否定句:主语+have/has+not+过去分词+其他.一般疑问句: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)3、请归纳出现在完成时的主要用法,通过哪些词语来提示?现在完成时用法1. 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。常用

4、的时间状语:already,yet, so far,never,just,before,recently,I have already lost my key.(说明过去某时丢的,现在还未找到。) 2.表示过去已经开始,持续到现在的动作或状态往往和表示一段时间的状语连用。for+一段时间,since+一段时间 I have known him for ten years.I have known him since ten years ago .(从开始认识到现在延续了十年)4、请比较: He has been to the US . He has gone to the US . He ha

5、s been in the US for three years .5、请看句子:He has come to school for two hours .对吗?For 和since要用延续性动词,如果是短暂性动词要改为相应的延续性动词,例如:leave/go- be away come-be here/be inbuy- have, borrow-keepjoin-be in/a member of die-be dead, begin/start- be on finish- be over 5、你能用英语说出他们吗? 1)、玛丽上午七点到了学校。 2)、她在学校学习两个小时了。 The

6、keys:1)、Mary got to school at seven .2) 、She has studied at school for two hours. 现在完成时与一般过去时的用法比较 1、 一般过去时表示过去某个时间发生的事、存在的状态或经常发生的动作。说话的侧重点只在于陈述一件过去的事情,不强调对现在产生的影响。 如: He visited Guilin in 1998. 他1998年参观过桂林。(只说明去桂林的时间) 2、 现在完成时表示动作发生在过去,对现在造成了影响或产生了结果。不与确定的过去时间状语连用。 如: Jill has bought a new compute

7、r. 吉尔买了一台新电脑。(着重点是现在有了一台新电脑) 3、 两种时态的区分 (1)一般过去时的谓语动词用过去式,而现在完成时的谓语基本构成是助动词have /has +过去分词。 (2)一般过去时通常与表示过去的时间状语连用。如:yesterday, last week, two years ago, just now, in 2002等; 而现在完成时则常与just, already, ever, never等副词和these days, this week, since., for.等表示一段时间的状语连用。 (3)看看以下的几组句子,有什么区别? Have you seen the

8、film?(A) Did you see the film?(B) 说明 你看过这部电影吗?(A)句强调的是被问者对剧情是否了解;(B)句强调的是看这部电影的动作是否发生过,并不强调是否知道其内容。 How has he done it?(A) How did he do it?(B) 说明他是怎么做的这件事?(A)句强调的是他做这件事的方式对现在产生了某种影响;(B)句单纯的询问做这件事的方式。 He has lived in Beijing for 8 years.(A) He lived in Beijing for 8 years.(B) 说明他在北京住了8年。(A)句讲的是到目前为止

9、他在北京住了8年,可能还会继续在北京住下去。(B)句讲的是他在北京住过8年,现在不在北京了。 测评提升1、单项选择:1)、Harry Potter is a very nice film. I _it twice. . will see . have seen . saw .see 2)、These farmers have been to the United States . Really? When _ there ? . will they go .did they go . do they go . have they gone3)、Zhou Lang _already _in th

10、is school for two years . . was ; studying . will ; study . has ; studied . are; studying 4)、 His father _ the Party since 1998 . .joined . has joined . was in . has been in 5)、Do you know him well ? Sure .We _ friends since ten years ago . . were . have been . have become . have made 6|、He has _ be

11、en to Shanghai, has he ? . already .never .ever . still 7)、Hurry up! The play _ for ten minutes . . has begun . had begun . has been on . began 8)、 It _ ten years since he left the army . . Is . has been . Will be . was 9)、 Miss Green isnt in the office. She_ to the library. .has gone . went .will g

12、o . has been 10)、My parents _ Shandong for ten years. . have been in . have been to . have gone to . have been 2、用适当的时态填空:1). She _ (live) here for ten years .2). Both of them _ (come) to Hongkong ten days ago.3). Half an hour _ (pass) since the train _ (leave).4) . Mary_(lose) her pen . _ you _ (see) it anywhere?5). _ you _ (find) your watch yet?6). -Are you thirsty?-No ,I _ just _ (have) some orange.7). I _(not finish) my homework . Can you help me?.8). I _ (buy) a book just now.9) . I _ (lost ) my watch yesterday.10) . My father _ _ (read) this book since yesterday.-

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