Who helped you clean the room?(改为被动语态)

问题描述:

Who helped you clean the room?(改为被动语态)
Who_______you_______to clean the room?

很高兴为您解答问题
Who____were___you__helped__ by___to clean the room?
希望我的回答能够对你有所帮助每空一词那就把by去掉吧,不过就不大通顺了,按理说应该把by加上才对的,应该是题有问题。


求采纳~~两个都过去时?were是过去时,但是helped是过去分词,be+过去分词表示被动语态

求采纳~~