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第一PPT > PPT課件 > 英語課件 > 人教版高中英語必修二 > 《The Internet》SectionⅣ PPT課件

《The Internet》SectionⅣ PPT課件

《The Internet》SectionⅣ PPT課件 詳細(xì)介紹:

《The Internet》SectionⅣ PPT課件《The Internet》SectionⅣ PPT課件《The Internet》SectionⅣ PPT課件

《The Internet》SectionⅣ PPT課件

現(xiàn)在完成時(shí)的被動(dòng)語態(tài)

語法整體突破

現(xiàn)在完成時(shí)是一種現(xiàn)在的時(shí)態(tài)。它可表現(xiàn)為現(xiàn)在完成時(shí)的主動(dòng)語態(tài)和現(xiàn)在完成時(shí)的被動(dòng)語態(tài)兩種形式。

一、概念

[合作探究]

There are countless articles telling us how the Internet has made our lives more convenient.有無數(shù)的文章告訴我們互聯(lián)網(wǎng)如何使我們的生活更方便了。

Much has been written about the wonders of the World Wide Web.

關(guān)于萬維網(wǎng)的奇跡已經(jīng)寫了很多。

[自主發(fā)現(xiàn)1]現(xiàn)在完成時(shí)態(tài)表示________發(fā)生的動(dòng)作或存在的狀態(tài)到現(xiàn)在已經(jīng)完成或者仍將持續(xù)下去。它強(qiáng)調(diào)對(duì)________造成的結(jié)果或影響。它有主動(dòng)語態(tài)和被動(dòng)語態(tài)兩種形式。

二、構(gòu)成

[合作探究]

I have heard nothing from him up to now.到目前為止我沒有他的任何消息。

I haven’t seen him recently.我已經(jīng)很久沒有看到他了。

The experiment has been done successfully.這個(gè)實(shí)驗(yàn)做得很成功。

The blackboard has not been cleaned yet.還沒有擦黑板。

[自主發(fā)現(xiàn)2]

(1)現(xiàn)在完成時(shí)的主動(dòng)語態(tài):________________ (肯定式); has/have not done(否定式)

(2)現(xiàn)在完成時(shí)的被動(dòng)語態(tài):__________________ (肯定式); ____________________(否定式)

三、基本用法

1.完成用法

[合作探究]

He has turned off the light.他已把燈關(guān)了。

He has already obtained a scholarship.他已經(jīng)獲得了一份獎(jiǎng)學(xué)金。

This book has been translated into many languages.這本書已被譯成多國語言。

These flowers have been watered,so you can go home.

這些花已經(jīng)澆水了,所以你可以回家了。

... ... ...

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