Question

求虚拟语气的用法？特别是should型虚拟怎么用？

Answer 1

.should 在含有条件的虚拟语气中的运用

1，虚拟现在时表示与现在事实相反的假设，其if 从句的谓语形式用动词的过去式(be 一般用were)，主句用would/ should/ could/ might +动词原形。

2，I’d come too if I had time to spare. 

虚拟过去时是表示与过去事实相反的假设，if 从句的谓语形式用过去完成时即had＋过去分词，主句用would / should / could / might + have +过去分词。
If the hurricane had happened during the daytime there would have beenmore deaths.

3，虚拟将来时是表示对将来实现的可能性很小的或不确定的假设。If从句的谓语形式用一般过去式或用were to / should +动词原形，主句用would /should /could/ might +动词原形。
If I were to met him tomorrowshould, I should ask him about it.