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主 谓 宾
→The teacher is listened to by us carefully in class.
主 谓 介词短语
⑵Ｗe laughed at him .
→He was laughed at by us.
被动语态的结构与用法：
㈠结构：be +done (过去分词)
被动语态中的be为助动词，无意义。be可能是am , is , are也可能是was ,were或原形be。
注：★被动语态的时态是由be的时态决定的，be是什么时态，全句就是什么时态，be后面的过去分词不变。
㈡用法：
例：①Ｈistory is made by the people. (一般现在时)
②Ｔhe cars were made in Tianjing in 1995. (一般过去时)
③The tree will be cut down next year.(一般将来时)
④Ｔhe room must be kept clean. （含有情态动词的被动语态）
⑤The door is being opened. （现在进行时）
⑥The film has been seen by me. （现在完成时）
注：我们初中主要掌握前面四种的用法
时 态 动词的被动形式 例 句
一般现在时is done He is asked to do this.
一般过去时was done The story was told by her mother.
一般将来时will be done The problem will be discussed tomorrow.
现在进行时is being done The novel is being written.
现在完成时has been done The house has been built.
被动语态的各种句型：
Ｔhe song is liked by young people. (肯定句)
Ｔhe song isn’t liked by young people （否定句）
Is the song liked by young people ? （一般疑问句）
Who is the song liked by ?=By whom is the song liked? （特殊疑问句）
主动语态改被动语态的方法：