感官动词和使役动词的被动语态

问题描述:

感官动词和使役动词的被动语态
最好有语法也有例句
谢谢

感官动词和使役动词在主动句中直接加动词原形,被动句中要加to
如 I see him enter the room.
He is seen to enter the room.