I saw him going to the office .的被动语态怎么改?是He was seen to going to the offi...I saw him going to the office .的被动语态怎么改?是He was seen to going to the office.感官动词接doing的被动语态形式怎么改?

问题描述:

I saw him going to the office .的被动语态怎么改?是He was seen to going to the offi...
I saw him going to the office .的被动语态怎么改?是He was seen to going to the office.感官动词接doing的被动语态形式怎么改?

He was seen going to the office,不用加to
see sb,do sth,变被动时要加to,而see sb,doing 变被动时不加to