was/were been doing 和was/were being done 区别是什么?分别表示什么?如题...

was/were been doing 和was/were being done 区别是什么?分别表示什么?如题...
was/were been doing 和was/were being done 区别是什么?分别表示什么?
如题...

was/were been doing 和was/were being done 区别是什么?分别表示什么?如题...
前者:完成时的被动语态 后者:进行时的被动语态