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It is used as a hospital. It is also used as a training centre.
During his last visit, 150 patients were operated on.
被动语态 Passive Voice
主动语态表示主语是动作的执行者。
被动语态表示主语是动作的接受者。
We plant trees.
Trees are planted by us.
B. 被动语态 (the Passive Voice)
A. 主动语态 (the Active Voice)
英语动词有两种语态：
The lights were turned on by Tom.
The windows are cleaned every week.
Millie closed the door.
The TV was turned on.
The boy made a model plane.
A total(总数) of 8 questions are answered.
or
Active
Passive
Passive
Passive
Active
Passive
Active
Passive
None of the books was taken away.
The plane is used as training centre.
★It is obvious(显然) who performs the action. 动作的执行者是泛指或者不言自明时。
被动语态的基本用法
be + v-ed