被动语态to be与beingbeing 正在进行,to be将来要做 1.they insisted on the design being finished tomorrow.a.being finished b.to be finished为什么B是错的?2.The children went there to watch the iron tower__a.being ecrected b be erected

被动语态to be与beingbeing 正在进行,to be将来要做 1.they insisted on the design being finished tomorrow.a.being finished b.to be finished为什么B是错的?2.The children went there to watch the iron tower__a.being ecrected b be erected be going to do 的被动语态 be able to能否有被动语态? be able to能否有被动语态? 情态动词的被动语态与BE动词的被动语态之间的区别 什么是动词不定式的被动语态?如to be counted: 什么情况下被动语态省略to be?RT to be是被动语态吗?举个例子 be used to doing是被动语态吗 be used to doing 有没有被动语态和现在完成时 be made to do还是doing?（被动语态） be scheduled to do是被动还是虚拟语态 用allege to be造个被动语态的句子 英语:被动语态to回来与被动语态动词-ing形式这两种情况怎样区别? Be held是不是被动语态 被动语态什么时候不用be You should be invited to the party 被动语态改为主动语态 Lt will soon be sending up four astronauts to repair it.这是被动语态?这种被动语态结构是什么?