将下列句子改为被动语态,英语.1Don't they tell you about it?2.Yesterday our teacher asked us to clean the classroom.3.we must keep the noise under 50dbs here.

分类: 作业答案 • 2021-12-20 03:29:37

问题描述：

将下列句子改为被动语态,英语.
1Don't they tell you about it?
2.Yesterday our teacher asked us to clean the classroom.
3.we must keep the noise under 50dbs here.

答

aren't you told about it by them？
we were asked to clean the classroom by our teacher yesterday
the noise must be kept onder 50dbs here.

答

1.Aren't you told by them?
2.we were asked to clean the classroom by our teacher.
3.The noise must be kept under 500dbs here.