内容正文:
被动语态
考点一:被动语态的基本结构和用法
一.被动语态的基本结构
被动语态的基本结构:助动词be + 及物动词的过去分词
二.被动语态的用法
在被动语态中,主语是动作的承受者,主要用于下列几种情况:
1. 不知道动作的执行者时。
This watch is made in China.
2. 没有必要指出动作的执行者时。
More trees must be planted every year.
3. 需要强调或突出动作的承受者时。
Chinese is spoken by more and more people in the world.
考点二:主动语态和被动语态的转换
一. “主语+谓语+宾语”句型变为被动语态
1. 先将主动句里的宾语变成被动句中的主语,若主动句中的宾语是人称代词,要将宾格变为主格。
然后把主动句中的主语变成被动句中的宾语,主格代词变成宾格代词,并由by引出。
最后将主动句中的谓语动词变成相应的被动形式。
主动语态:动作执行者+谓语动词主动形式+动作承受者
被动语态:动作承受者+谓语动词被动形式+ by+动作执行者
We asked him to sing an English song.
→He was asked to sing an English song by us.
二.“主语+谓语+双宾语”(sb. Sth.)句型变为被动语态
通常把指“人”的间接宾语变为主语,指“物“的直接宾语保留不变;如果把指“物”的直接宾语变为主语,则在间接宾语前加to或for。〖在间接宾语前加“to”,这类动词有:give, offer, lend, pass, promise, tell等;在间接宾语前加“for”,这类动词有:buy, cook, get, make等〗
She gave me a book.
→I was given a book by her.(间接宾语改为主语)
→A book was given to me by her.(直接宾语改为主语)
注意:并非所有的间接宾语都可作为被动句的主语
She wrote Miss Green a letter.
→A letter was written to Miss Green by her.(√)
→Miss Green was written a letter by her.(×)
三.“主语+谓语+宾语+宾补”句型变为被动语态
宾语加上宾语补足语一起构成复合宾语。变被动语态时,只把宾语变为被动句的主语。宾语补足语保留在原处,成为宾语补足语。
We saw him out.
→He was seen out.
She has kept us waiting for an hour.
→We have been kept waiting for an hour.
I heard Jane playing the piano in her room.
→Jane was heard playing the piano in her room.
四.短语动词变为被动语态
许多由不及物动词和介词、副词等构成的短语动词相当于及物动词,可以有宾语,也可以有被动语态。但是,短语动词是一个不可分割的整体,在变为被动语态时,不可丢掉构成短语动词的介词或副词。
They put off the meeting because of the weather.
→The meeting was put off because of weather.
五.主动语态中后加省略to的不定式的“四看”(look,watch,see,notice)“三让”(let,make,have)“二听”(listen to,hear)“一感觉”(feel),变为被动句时,应加上不定式符号to。
如:I saw a heavy man enter the house.
→A heavy man was seen to enter the house by me.
He makes the girl stay at home .
→The girl is made to stay at home by him.
练习一:将下列句子变成被动语态。
1.We clean the classroom after school every day.
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2. Can you make this watch work?
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3.He passed me a book just now.
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