被动语态怎么改?Billy often says he doesn't need any help.You can not use this kind of dress by hand.When did the builders set up the teaching building?这三句怎么改被动语态

被动语态怎么改?Billy often says he doesn't need any help.You can not use this kind of dress by hand.When did the builders set up the teaching building?这三句怎么改被动语态 He often helps Tom when Tom is in trouble. 这个句子的被动语态怎么改? I often hear the girl sing beautiful songs 改为被动语态怎么改 【The old man often makes us laugh.】这个句子的被动语态怎么改? the old man often makes us laugh 被动语态怎么改 he often listens to music改被动语态 英语的被动语态怎么改 双宾语的句子怎么改被动语态 被动语态怎么改反义疑问句? take对被动语态怎么改 I hit him.怎么改被动语态. 改被动语态 we often plant trees in spring怎么变被动语态 he often tells the children stories怎么变为被动语态 does Lucy often break glasses?变被动语态怎么变? He often asks a question.怎么变成被动语态 she gave me a present怎么改被动语态 be in control of的被动语态怎么改