当我去看他时，他在打扫房间。

He was cleaning the room when I went to see him.

youdao

他在打扫房间。

He is cleaning his room now.

youdao

李明或者是他的同班同学在打扫房间。

Li Ming or his classmates are cleaning the room.

youdao

他的祖母正在打扫房间。

His grandmother is cleaning the room.

youdao

昨天这个时间他是在打扫房间吗？

Was he cleaning the room at this time yesterday?

youdao

我发现他正在打扫房间。

I found him cleaning the room.

youdao

当我走进来的时候，他正在打扫房间。

When I came in, he was cleaning the room.

youdao

从九点到十点他一直在打扫房间。

He has been cleaning the room from nine to ten.

youdao

他昨天下午一直在打扫房间。

He had been cleaning the room yesterday afternoon.

youdao

昨天我看见他正在打扫房间。

I saw him cleaning the room yesterday.

youdao

他一定在打扫房间。

He must be cleaning the room.

youdao

他正在打扫房间。

He is cleaning the room.

youdao

他正在打扫自己的房间里。

He is cleaning his room.

youdao

他现在正在打扫房间。

He is cleaning his room now.

youdao

他现在正在打扫房间。

He is cleaning his room now.

youdao