关于英语被动语态

老师讲了被动语态,不是特别明白,哪位能给我一些资料,还有下面的几句练习1.Youcanuseadictionaryintheexam.2.Canyoumendthisra... 老师讲了被动语态,不是特别明白,哪位能给我一些资料,
还有下面的几句练习
1.You can use a dictionary in the exam.
2.Can you mend this radio?
3.We should not allow fifteen-year-olds to work at night.
4.Students must clean their classroom every day.
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湮潆
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被动语态方面的知识

一、 被动语态的用法:
1. 一般现在时的被动语态构成:is / am / are + 及物动词的过去分词
2. 一般过去时的被动语态构成:was / were + 及物动词的过去分词
3. 现在完成时的被动语态构成:has / have + been + 及物动词的过去分词
4. 一般将来时的被动语态构成:will+ be + 及物动词的过去分词
5. 含有情态动词的被动语态构成:情态动词+ be + 及物动词的过去分词
6. 现在进行时的被动语态构成:am / is / are + being + 及物动词的过去分词
7. 不定式的被动语态:to + be + 及物动词的过去分词
二、 怎样把主动语态改成被动语态:
1. 先找出谓语动词;
2. 再找出谓语动词后的宾语;
3. 把宾语用作被动语态中的主语;
4. 注意人称、时态和数的变化。

例:1. Bruce writes a letter every week. →A letter is written by Bruce every week.
2. Li Lei mended the broken bike this morning.→The broken bike was mended by Li Lei this morning.
3. He has written two novels so far.→Two novels have been written by him so far.
4. They will plant ten trees tomorrow.→Ten trees will be planted by them tomorrow.
5. Lucy is writing a letter now.→A letter is being written by Lucy now.
6. You must lock the door when you leave.→the door must be locked when you leave.

三、 使用被动语态应注意的问题:
1. 不及物动词无被动语态。

例:What will happen in 100 years.
The dinosaurs disappeared about 65 million years ago.

2. 有些动词用主动形式表示被动意义。

例:This pen writes well.
This new book sells well.

3. 感官动词或使役动词使用省略to的动词不定式,主动语态中不带to ,但变为被动语态时,须加上to 。

例:make somebody do something→somebody+ be +made to do something
see somebody do something→somebody +be +seen to do something
A girl saw my wallet drop when she passed by.→My wallet was seen to drop by a girl when she passed by.
The boss made the little boy do heavy work.→The little boy was made to do heavy work by the boss.

4. 如果是接双宾语的动词改为被动语态时,直接宾语(物)作主语,那么动词后要用介词,这个介词是由与其搭配的动词决定。

例:He gave me a book.→A book was given to me by him.
He showed me a ticket.→A ticket was shown to me by him.
My father bought me a new bike. →A new bike was bought for me by my father.

5. 一些动词短语用于被动语态时,动词短语应当看作一个整体,而不能丢掉其中的介词或副词。

例:We can’t laugh him. →He can’t be laugh by us.
He listens to the radio every day. →The radio is listened to by him every day.
The nurse is taking care of the sick man. →The sick man is being taken care of by the nurse.
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1.A dictionary can be used in the exam (by you).
2.Can this radio be mended by you?
3.Fifteen-year-olds should not be allowed to work at night (by us).
4.Students' classroom must be cleaned every day by them.
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几分钟掌握被动语态,快点来学习吧

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