8B Unit1復(fù)習(xí)教案

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8B Unit1復(fù)習(xí)教案2010年12月24日星期五13：42 8B Unit1復(fù)習(xí)教案

教學(xué)目的1.To go over the knowledge in unit 1

8B Unit1復(fù)習(xí)教案

教學(xué)重點(diǎn)和難點(diǎn)1.present perfect tense and some words and expressions

教學(xué)過程

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 havealso 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)生在過去，但考慮較多的不是動(dòng)作發(fā)生在過去的什么時(shí)候，而是強(qiáng)調(diào)與目前的聯(lián)系，即過去與現(xiàn)在的關(guān)系。強(qiáng)調(diào)過去的動(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)讀過這本書了。

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

表示動(dòng)作過去已經(jīng)開始，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。

現(xiàn)在完成時(shí)屬于現(xiàn)在時(shí)態(tài)范疇，不能和表示過去的時(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.過去我從未聽說過他。

瞬間動(dòng)詞也叫短暫性動(dòng)詞。這種動(dòng)詞動(dòng)作開始也就意味著結(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.自十年前開始我就沒見過他。

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)好久沒見到她了。

②have/has been in,have/has been to和have/has gone to的區(qū)別