上期我们研究了现在进行时的主动语态变为被动语态，本期我们研究过去进行时的主动语态变为被动语态。
所有进行时的构成为：
be 现在分词
过去进行时的构成为：
was/were 过去分词
所有被动语态的构成为：
be 过去分词
过去进行时的被动结构为：
was/were being 过去分词
例1、We were discussing the plan at
that time.
分析：主语：we;
谓语：were discussing
宾语：the plan
变为被动语态为：
→The plan was being discussed by us
at that time.
那时我们正在讨论这个计划。
2、I was doing my homewor at home
this time yesterday.
分析：主语：I
谓语：was doing
宾语：my homework
变为被动语态为：
→My homework was being done by
me at home this time yesterday.
昨天这个时间我正在家做作业。
3、We were playing basketball from
2:00 to 4:00yesterday afternoon.
分析：主语: we
谓语: were playing
宾语:basketball
变为被动语态为：
→Basketball was being played by us
from 2:00 to 4:00yesterday afternoon.
昨天下午二点到四点我们在打篮球。
本期我们主要研究了过去进行时的主动语态变为被动语态，进行时的被动语态容易出错，大家要理解掌握。欢迎大家点赞评论，关注互动交流。Thank you,Bye!See you next time!
