牛津译林版八年级英语下册导学案：Unit1PastandPresent(4)Grammar导学案

1、牛津译林版八年级英语下册导学案8B Unitl Past and Prese ntGrammar（导学案）学习目标： 1.To know the prese nt perfect ten se.2. To master the structure of the PPT.学习重难点： To know how to use the prese nt perfect ten se.学习过程Pre-task:（自主学习）（一）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。常用的时间状语：already， so far,never，just， before， recentl

2、y, yet1） I have lost my key.（说明过去某时丢 的，现在还未找到。）2） rve just copied all the new words .我刚抄写了所有的生词。3） Shes lost her books .她丢失了她的书。4） Weve just cleaned the class room .我们刚好打扫了教室。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，sin ce+段时间 How Ion g.?I have known him for ten years.I have known him since tw

3、o years ago./ since he came to our school.3.表示次数。 We have visited the Summer Palace twice（二）现在完成时的句子结构1. 肯定式 主语+助动词 have / has +过去分词 + 其它说明：这里的 have /has 是助动词，没有什么具体意义。当主语是第三人称单数时助动词用 has,其余人称一律用have。 has, have 的缩略式分别为s 或ve。2. 否定式 主语+助动词 have / has+ not +过去分词 + 其它说明：把陈述句中的 have 或 has 放到句首，句末打问号,肯定回答

4、用“ Yes，主语+说明：否定句 只需在助动词 have / has 后面加 not 就行。 缩略式分别为 have nt , has nt1） I have nt fini shed my homework yet .我还没有完成我的作业。2） She has nt travelled on a train .她没有坐火车旅行过。3.般疑问式 助动词 Have/ Has +主语+过去分词+其它？have/ has.否定回答用 “ No 主语+ have nt/ has nt.1) Have you ever made dumplings ?你曾经做过饺子吗?Yes , I have .是的，

5、我做过。2) Has she ever been abroad ?她曾经出过国吗?No , she has nt.不，没有。3) Have they found the lost books yet ?他们已经找到了丢失的书吗?Yes , they have.是的，他们找到了。Post-task:（课堂反馈）（一）写出下列动词的过去式和过去分词l.look2.live3.stop4.carry5.hope6.call7.fi e13.get14.say15.see16.put17.eat18.take19.read20.write21.give22.k now23.leave24.buy25.

6、hear26.fi nd27.make28.th ink29.grow30.forget(二)用：already , yet , just , ever , never , recently before 填空1 I haven Heard from my friends_2 Have you fini shed your homework_ ?Yes ,I have . I have _ fini shed it .3They have stayed at home_4Have you_ bee n to the USA?No ,But I want to go there very muc

7、h5He hascome back .6He hasvisited the Great Wall.7The woma n has n ever heard of that_说明：把陈述句中的 have 或 has 放到句首，句末打问号,肯定回答用“ Yes，主语+8 Has the train arrived _ ？ -No, not _（三）用括号中所给的动词的适当形式完成下列句子1.Mary_(lose) her pen._ you_ (see) it any where?2._ - you_ (find) your watch yet?3.-Are you thirsty? -No, I

8、_ just_ (have) some oran ge.4.We_ already_(retur n) the book.5._ they_ (build) a new school in the village last year?6.-Has Tom taught you English?-Yes, he_(teach) us En glish for two years.7.I_ (n ot fini sh) my homework yet. Can you help me?8.-How many times_ you_ this book by Jim? (read)-Never.9.My father_ (read) the novel twice.10. Wu Dong_ (b