英语被动语态转成主动语态~the building was constructed over three years.proposals are to be prepared in triplicate.

英语被动语态转成主动语态~the building was constructed over three years.proposals are to be prepared in triplicate. 英语主动语态怎么改成被动语态 英语 将主动语态改为被动语态 被动语态改为主动语态 英语 变被动语态he is telling his mother what happened the day before.主动语态变被动语态 英语语态的主动与被动结构 英语语态的主动与被动结构 Who is repairing the bike?主动语态变被动语态 求英语被动语态与主动语态讲解谢 英语主动语态改被动语态的练习题 英语主动语态变被动语态例句一般过去时的 求英语被动语态和主动语态的详解? 英语主动语态改被动语态的练习题 英语中怎样将主动语态变为被动语态 英语中,主动语态怎样变为被动语态 英语中的主动语态和被动语态,有什么区别 英语中 怎样把主动语态改成被动语态 请问英语的被动语态和主动语态是怎么回事