个人学习笔记21 Mad or not 被动语态

方成艳
2018-01-28 08:44:53

Lessoner21 Mad and not 学习笔记

被动语态 be+done 与情态动词搭配

can be done

could be done

may be done

must be done

must have been done 推测过去的被动 (背下来)

Over a hundred people must have been driven away from their homes by the noise.

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