求英语语法虚拟语气例句
问题描述：
求英语语法虚拟语气例句
A,对于过去已发生的事情的假设
B对于现在发生的事情的假设
C对于将来要发生的事情的假设.
各举3个例句.
答
与..事实相反 If从句 主句 过去 Had done Would* have done 现在 Were/did Would* do 将来 Should do/were/were to do Would* do 例句：If there hadn’t been much rain in spring,we would have had a good harves...