英语主动变被动I saw him playing football at that moment. 如何变被动

英语主动变被动I saw him playing football at that moment. 如何变被动 英语：主动变被动,被动变主动. 英语中主动句变被动句?主动句：we saw him sitting there without doing anything.变为被动句后是：He was seen to sit there without doing anything. I saw him playing the piano变成被动语态怎么变 I saw him dancing.改为被动语态 I saw her dance yesterday变被动 主动变被动问题I give him a car变被动是 He is given a car by me为什么不是He is given a car from me! I wanna make him understood这个是主动还是被动 i saw him walk into the next room被动语态 I saw him singing in the room.改为被动句 变被动语态What I saw made me very sad. 英语主动语态变被动语态例句一般过去时的 英语主动句变被动句,和方法 【英语】被动变主动Rice is grown in the northeast of China.变主动 英语 被动语态与过去分词例如 I saw him being taken away 这句为什么不可以改为I saw him taken away ? 不是可以过去分词表被动吗? my brother used to make me do the homework for him 主动变被动 I used to ____ ____ ____ ____ the homework by my brother 怎样变被动为主动 英语问题 【主动改被动】I often see him enter the room.（改被动）_____ _____often _____ _____ _____ the room by _______.