see sth done句型怎样变被动语态
问题描述：
see sth done句型怎样变被动语态
答
sth is seen done 例如：
People saw a car hit by a truck.--> A car was seen hit by a truck.
这里的hit是动词to hit 的过去分词,hit的过去式和过去分词都是hit,所以没有to.