来源：学生作业帮 编辑：作业帮 分类：英语作业 时间：2024/07/17 14:09:14
英语 把以下主动句变被动句
1.He understands my meaning.
2.the policeman removed his hat.
3.the living problem may trouble students.
My meaning is understood by him
HIs hat is removed by the policeman
Studens may be troubled by the living problem
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