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The cat chased the mouse. 其被动式：
The mouse was chased by the cat.
这里，后随by的，叫“agent", 它时常被省略。
如：The bank has been robbed.

多数及物动词允许被动式。如，The show was enjoyed by everyone.

带有间接宾语的被动式：
Ann was given a gold watch by her boyfriend.

其它形式例如：
The wine must be kept cool.
The lamp was placed in the corner of the room.

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简单对话

I was told that my mother was ill.
I was asked how long the meeting would last.
We were taught how to drive a truck.
Helen was advised to take a long rest.
The spy was seen leaving the building.

带有介词的被动式：be+过去分词+介词