英语虚拟语气的三种时态:
(1)与现在事实相反。
若与现在事实相反,虚拟语气的条件从句的谓语用过去式(be通常用were),主句谓语用“should (would, could, might)+动词原形”。如:
If I knew her number I could ring her up.
(2)与过去事实相反。
若与过去事实相反,虚拟语气的条件从句的谓语用过去完成时(had+过去分词),主句谓语用“should (would, could, might)+have+过去分词”。如:
If we had found him earlier we could have saved his life.
(3)与将来事实相反。
若与将来事实相反,条件从句的谓语用过去式(be通常用were),主句谓语用“should (would, could, might)+动词原形”。如:
If he went,would you go too?