was, to cleanmake sb. do sth.中的do是省to不定式 当变成被动语态时to要还原，结构是sb. be made to do sth.
1 ，昨天我妈妈让我打扫房间。 （改为被动语态） 取得我____ _____ ______昨天的房间。
I was made to clean the room yesterday.
was by my my mother to clean
