Question

虚拟语气的用法？

Answer 1

虚拟语气的详细用法是与现在事实相反、与过去事实相反、与将来事实相反三种用法，只需要理解之后进行相关的应用即可。具体的 操作如下：

1、虚拟条件句的三种基本类型：与现在事实相反、与过去事实相反、与将来事实相反。

2、与现在事实相反，条件从句的谓语用过去式，主句谓语用should（would,could,might）+动词原形。

3、与过去事实相反，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。

4、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。

注意事项：

1、书写英语单词的时候一定要认真书写，防止有的字母之间混淆错误。

2、学习虚拟语气的详细用法时可以理解记忆，切不可盲目死记硬背，这样会得不到好效果。

Answer 2

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。If places were alike, there would be little need for
geographers.如果各个地方都一样，就不需要地理学家了。

2.
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 he had known your address yesterday,he would have telephoned
you.

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 he were to leave today, he would get there by
Friday