she is looked down (on) by her friend.

问题描述:

she is looked down (on) by her friend.
要不要加on啊?
down作介词还是副词啊?
被动语态如果是不及物动词+副词,不跟宾语,后面还要加介词吗?
要主谓宾齐全吗?
快.

她被她的朋友轻视.不用被动原句应是her friend looks down on her .倒装后宾语前置,应加on.