牛津英語(yǔ)8B Unit1現(xiàn)在完成時(shí)態(tài)復(fù)習(xí)教案

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牛津英語(yǔ)8B Unit1現(xiàn)在完成時(shí)態(tài)復(fù)習(xí)教案作者：yangyunolivia

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牛津英語(yǔ)8B Unit1現(xiàn)在完成時(shí)態(tài)復(fù)習(xí)教案

Unit 1

課題

Terminal Revision

課時(shí)

日期

教學(xué)目的

1.To go over the knowledge in unit 1

教學(xué)重點(diǎn)和難點(diǎn)

1.present perfect tense and some words and expressions

教學(xué)過(guò)程

一、重點(diǎn)單詞：just,since,fact,turn,miss,pleasant,land,way,lonely,lucky,grandpa,unkind,impolite,over,unhealthy

二、短語(yǔ)運(yùn)用：in fact,get married,turn into,noise pollution,take off,in some ways,from time to time,be in service/use,free time,on one's own,on longer,the changes to；

三、重點(diǎn)結(jié)構(gòu)：It is easy for him to see them as often as before.

It was built to the north of Lantau Island.

I wish you ahappy holiday.

It no longer provides agood environment for wildlife.

The changes have brought many benefits but they have also caused many problems for wildlife.

四、語(yǔ)法：現(xiàn)在完成時(shí)，present perfect tense 1、現(xiàn)在完成時(shí)所表示的動(dòng)作發(fā)生在過(guò)去，但考慮較多的不是動(dòng)作發(fā)生在過(guò)去的什么時(shí)候，而是強(qiáng)調(diào)與目前的聯(lián)系，即過(guò)去與現(xiàn)在的關(guān)系。強(qiáng)調(diào)過(guò)去的動(dòng)作對(duì)目前造成的影響和后果，或強(qiáng)調(diào)動(dòng)作本身或狀態(tài)持續(xù)地現(xiàn)在，因此屬于現(xiàn)在時(shí)范疇。它的主要用法可概括為八個(gè)字：影響、結(jié)果、持續(xù)和經(jīng)歷。

2、現(xiàn)在完成時(shí)的構(gòu)成：

肯定式：I/We/you/they have+been/worked she/he/it has+been/worked

否定式：have not+been/worked has not+been/worked

疑問(wèn)式：Have+主語(yǔ)+been/worked…?

Has+主語(yǔ)+been/worked…?

3、現(xiàn)在完成時(shí)的用法

(1)表示過(guò)去發(fā)生的某一動(dòng)作對(duì)現(xiàn)在生成的影響或結(jié)果。

如：He has read the book.他已經(jīng)讀過(guò)這本書了。

"讀書"是發(fā)生在過(guò)去的動(dòng)作，對(duì)現(xiàn)在造成的結(jié)果是"讀過(guò)了"。

(2)表示動(dòng)作過(guò)去已經(jīng)開(kāi)始，持續(xù)到現(xiàn)在，可能還要繼續(xù)下去。這時(shí)往往與表示一段時(shí)間的狀語(yǔ)連用。

如：He has worked for more than three years.他工作三年多了。

I have been in Suzhou for ten years.我來(lái)蘇州已經(jīng)十年了。

(3)現(xiàn)在完成時(shí)屬于現(xiàn)在時(shí)態(tài)范疇，不能和表示過(guò)去的時(shí)間狀語(yǔ)連用，如yesterday,last week,a day ago等。但可以和never,ever,already,yet,just(剛剛),for…,since…,in the past three years,so far(到目前為止),by now,before(以前)等連用。

如：Have you finished your picture yet?你已經(jīng)完成你的畫了嗎?

I have never heard of him before.過(guò)去我從未聽(tīng)說(shuō)過(guò)他。

(4)瞬間動(dòng)詞也叫短暫性動(dòng)詞。這種動(dòng)詞動(dòng)作開(kāi)始也就意味著結(jié)束，所以不能與表示一段時(shí)間的狀語(yǔ)連用。這些動(dòng)詞是become,begin,start,buy,borrow,arrive,come,die,fall,finish,go,join,leave,marry等。這了表述這種意思，我們常用相應(yīng)的延續(xù)性動(dòng)詞have,keep等或短語(yǔ)"be+名詞/形容詞/位置副詞/介詞短語(yǔ)"來(lái)代替短暫性動(dòng)詞。

如：He has kept the book for three weeks.這本書他已借了三周了。

The meeting has been on for half an hour.會(huì)已開(kāi)始半小時(shí)了。

He has been in the army for three years.他參軍三年了。

(5)其他詞組的區(qū)別

①since和for的區(qū)別

since短語(yǔ)或從句表示過(guò)去的動(dòng)作延續(xù)至今，since之后為時(shí)間點(diǎn)。

如：He has lived here since 2000.2000年以來(lái)他一直住在這兒。

I haven't seen him since ten years ago.自十年前開(kāi)始我就沒(méi)見(jiàn)過(guò)他。

I have known him since Iwas very young.我很小時(shí)就認(rèn)識(shí)他了。

For短語(yǔ)表示動(dòng)作延續(xù)多長(zhǎng)時(shí)間，for后面跟時(shí)間段。

如：He has lived here for three years.他住這兒已經(jīng)三年了。

I haven't seen her for along time.我已經(jīng)好久沒(méi)見(jiàn)到她了。