will have been pulled 和will be pulled的区别

问题描述:

will have been pulled 和will be pulled的区别
I suppose that when I come back in ten years'time,all these old houses ____down.
A:will have been pulled B:will have pulled C:will be pulling D:will be pulled
为什么不选B和C?

原题翻译 我猜测当我十年后回来的时候,所有的这些旧楼都已经被推倒了.分析 1 将来某事某事已经完成,典型的将来完成时结构2 主句中的主语是old houses,是无生命的物体,只有在被动状态下才能和动词“推倒”合理组合.由...