牛津譯林版八年級(jí)英語(yǔ)下冊(cè)導(dǎo)學(xué)案：Unit1PastandPresent(4)Grammar導(dǎo)學(xué)案

1、牛津譯林版八年級(jí)英語(yǔ)下冊(cè)導(dǎo)學(xué)案8B Unitl Past and Prese ntGrammar（導(dǎo)學(xué)案）學(xué)習(xí)目標(biāo)： 1.To know the prese nt perfect ten se.2. To master the structure of the PPT.學(xué)習(xí)重難點(diǎn)： To know how to use the prese nt perfect ten se.學(xué)習(xí)過(guò)程Pre-task:（自主學(xué)習(xí)）（一）現(xiàn)在完成時(shí)用法1.表示過(guò)去發(fā)生或已經(jīng)完成的某一 動(dòng)作對(duì)現(xiàn)在造成的影響或結(jié)果。常用的時(shí)間狀語(yǔ)：already， so far,never，just， before， recentl

2、y, yet1） I have lost my key.（說(shuō)明過(guò)去某時(shí)丟 的，現(xiàn)在還未找到。）2） rve just copied all the new words .我剛抄寫了所有的生詞。3） Shes lost her books .她丟失了她的書(shū)。4） Weve just cleaned the class room .我們剛好打掃了教室。2. 表示過(guò)去已經(jīng)開(kāi)始，持續(xù)到現(xiàn)在的動(dòng)作或狀態(tài)往往和表示一段時(shí)間的狀語(yǔ)連用。for+一段時(shí)間，sin ce+段時(shí)間 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.表示次數(shù)。 We have visited the Summer Palace twice（二）現(xiàn)在完成時(shí)的句子結(jié)構(gòu)1. 肯定式 主語(yǔ)+助動(dòng)詞 have / has +過(guò)去分詞 + 其它說(shuō)明：這里的 have /has 是助動(dòng)詞，沒(méi)有什么具體意義。當(dāng)主語(yǔ)是第三人稱單數(shù)時(shí)助動(dòng)詞用 has,其余人稱一律用have。 has, have 的縮略式分別為s 或ve。2. 否定式 主語(yǔ)+助動(dòng)詞 have / has+ not +過(guò)去分詞 + 其它說(shuō)明：把陳述句中的 have 或 has 放到句首，句末打問(wèn)號(hào),肯定回答

4、用“ Yes，主語(yǔ)+說(shuō)明：否定句 只需在助動(dòng)詞 have / has 后面加 not 就行。 縮略式分別為 have nt , has nt1） I have nt fini shed my homework yet .我還沒(méi)有完成我的作業(yè)。2） She has nt travelled on a train .她沒(méi)有坐火車旅行過(guò)。3.般疑問(wèn)式 助動(dòng)詞 Have/ Has +主語(yǔ)+過(guò)去分詞+其它？have/ has.否定回答用 “ No 主語(yǔ)+ have nt/ has nt.1) Have you ever made dumplings ?你曾經(jīng)做過(guò)餃子嗎?Yes , I have .是的，

5、我做過(guò)。2) Has she ever been abroad ?她曾經(jīng)出過(guò)國(guó)嗎?No , she has nt.不，沒(méi)有。3) Have they found the lost books yet ?他們已經(jīng)找到了丟失的書(shū)嗎?Yes , they have.是的，他們找到了。Post-task:（課堂反饋）（一）寫出下列動(dòng)詞的過(guò)去式和過(guò)去分詞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_說(shuō)明：把陳述句中的 have 或 has 放到句首，句末打問(wèn)號(hào),肯定回答用“ Yes，主語(yǔ)+8 Has the train arrived _ ？ -No, not _（三）用括號(hào)中所給的動(dòng)詞的適當(dāng)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