不用啊,只看主语跟动词的关系是主动还是被动
his homework has been finished
时态是用来考虑是什么时态的被动,将来被动式will be done
现在完成时的被动 have been done
过去完成时的被动 had been done
过去时的被动 was /were done
现在时的被动 is/am/are done
被动语态与有无时间状语有关吗?换句话说.被动语态一定要有明确的过去时间吗?
不用啊,只看主语跟动词的关系是主动还是被动
his homework has been finished
时态是用来考虑是什么时态的被动,将来被动式will be done
现在完成时的被动 have been done
过去完成时的被动 had been done
过去时的被动 was /were done
现在时的被动 is/am/are done