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　　→现在完成时

　　动词的被动形式：has/have been done

　　例句：The house has been built.

　　→过去完成时

　　动词的被动形式：had been done

　　例句：They said that their work had been finished.

　　含有情态动词的被动语态:情态动词+be+ done  Your homework must be handed in today.

　　其它几种特殊句型：

　　It is said that ……..

　　It is well known that …….

　　It is reported that……

　　例：

　　①History is made by the people. (一般现在时)

　　②The cars were made in Tianjin 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：☆不同时态的被动语态的差异主要体现在助动词be的变化上,同时助动词be还要在人称和数上与主语保持一致。

　　③应用情况

　　行为的执行者不明确或不必说出来。

　　Eg:  A stranger was killed  last night.

　　用于强调动作的承受者而不是执行者。

　　Eg: The story is told everywhere in the city.

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