改被动语态He was doing his homework at this time yesterday .

来源：百度知道编辑：UC知道时间：2024/06/30 10:17:02

He was doing his homework at this time yesterday .

--His homework was being done by him at this time yesterday

...为什么不能改成
His homework was done by him at this time yesterday

？

过去完成时的被动语态就是

was/were + being + done 记住就行了

作业被做啊being done

原句子是was doing
改了后还是不能变啊
was being done
只是变换成被动形式啊~

what was he doing? 改写成被动语态改被动语态怎么改被动语态英语改被动语态 1.he was made to stand for three hours outside.为什么用被动语态，怎样翻译 Have been doing 的被动语态是? 主动语态改被动语态一题帮忙改几个被动语态 he showed me the way to the station.(改被动语态）she has received a good education.(改被动语态)