The window is broken by him．窗子被他打破了。（被动语态）
2）用法不同：过去分词作表语时可以被 so，very，too等程度副词修饰，而被动语态则不能用so，very，too修饰，而需用much，very much，so much，too much修饰。试比较：
He was very interested in science．他对科学有极大兴趣。（系表结构）
I was so much surprised at the scene that I didn't know what to do．我被那种场面搞得大吃一惊，不知所措。（被动语态）
F．牢记（相关）句型
初中教材中与被动语态相关的句型有：
1．be covered with被……覆盖
2．be made of由……制作（发生物理变化）
be made from由……制作（发生化学变化）
be made in由（某地）制造
be made by被（某人）制造
3．be used for被用来……
be used as被当作（作为）……来使用
be used to do sth．被用来做某事
4．It is said that．．．据说……
It is hoped that．．．希望……
It is well known that．．．众所周知……例如：
①—Your coat looks nice．Is it ______ cotton？
—Yes．It's Shanghai．
A．made of；made by
B．made of；made in
C．made for；made by
D．made for；made in
［B］
② This machine is used ______ the room wet．
A．for keeping
B．as keeping
C．keep
D．to keeping
［A］
③ 据说在南京长江上又在建一座桥。
______ ______ ______ that ______ ______ is being ______ over the Changjiang River in Nanjing．
（填It is said；another bridge；built）
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