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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

現在完成時的被動語態

語法整體突破

現在完成時是一種現在的時態。它可表現為現在完成時的主動語態和現在完成時的被動語態兩種形式。

一、概念

[合作探究]

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

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

關于萬維網的奇跡已經寫了很多。

[自主發現1]現在完成時態表示________發生的動作或存在的狀態到現在已經完成或者仍將持續下去。它強調對________造成的結果或影響。它有主動語態和被動語態兩種形式。

二、構成

[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.我已經很久沒有看到他了。

The experiment has been done successfully.這個實驗做得很成功。

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

[自主發現2]

(1)現在完成時的主動語態:________________ (肯定式); has/have not done(否定式)

(2)現在完成時的被動語態:__________________ (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.他已把燈關了。

He has already obtained a scholarship.他已經獲得了一份獎學金。

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.

這些花已經澆水了,所以你可以回家了。

... ... ...

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