1.Had it not been for the PLA ,we _(be able)beat the flood.2
1个回答

考察虚拟语气。

1.would been able

2.hadn't went

3.hadn't seen

4.read

虚拟语气的主句,基本上是would /could /might +动词原形

从句三种情况

一,对过去情况的虚拟:had done﹝be 须为were﹞

二,对现在情况的虚拟:动词过去式

三,对将来情况的虚拟:were to do,或者should do﹝此处情态动词必须should!!﹞