英语句型转换,.主动变被动!Q：We heard Betty sing a song just now.Betty ___ ___ ___ ___ a song just now by us. 我认为应该填was heard,不过这道题给了四个空,我不知道该怎么填.请给个答案啊!

英语：主动变被动,被动变主动. 英语句型转换,.主动变被动!Q：We heard Betty sing a song just now.Betty ___ ___ ___ ___ a song just now by us. 我认为应该填was heard,不过这道题给了四个空,我不知道该怎么填.请给个答案啊! 英语.主动语态变被动语态的题.We must plant more trees next year. 英语句型转换!被动语态,谢谢 句型转换 主动语变被动He will go to other town readingI was playing paino with my friendi have rideing bike to go to school 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 英语各种句型时态急求各种英语句型时态!主动、被动…… 英语主动变被动I saw him playing football at that moment. 如何变被动 怎样变被动为主动 英语,主动改被动 英语主动转被动 英语的被动语态和主动语态怎么转换?被动语态的用法 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. 英语被动语态和主动语态的转换rt 怎么转换啊 被动语态变主动语态怎么变 句型转换将主动改被动1.I need some money.2.They planted many trees along the river last spring.3.We girl can sing this song well.4.The workers will build a new bridge over the WujiangRiver.