Section Ⅲ　Grammar--虚拟语气(Ⅱ)

语 境 自 主 领 悟 先观察原句 后自主感悟 1.If you had asked him yesterday，you would know what to do now.

2.He looks as if he had seen a ghost.

3.He looks as if he were an artist.

4.If only the alarm clock had rung.

5.If only I were you！

6.I wish he had visited us last night.

7.I would rather (that) I had not seen it.

8.I would rather you painted the wall green next time.

9.I suggest that we (should) hold a meeting next week.

10.It is time that the children went/should go to bed.

1.句1中从句的谓语动词为had asked，是与过去事实相反的虚拟语气；主句的谓语动词为would know，是与现在事实相反的虚拟语气。

2.由句1、2、3、4可以看出，as if从句和if only后的句子常用虚拟语气。表示对过去的虚拟用过去完成时，如句2、4；表示对现在的虚拟用一般过去时(be动词常用were)，如句3、5。

3.由句6、7、8可以看出，wish和would rather后的宾语从句中常用虚拟语气。表示对过去的虚拟用过去完成时，如句6、7；would rather后接的宾语从句中若表示对将来的虚拟用一般过去时，如句8。

4.在表示建议、命令、要求等意义的词如suggest，order，command，require等词后的宾语从句中，谓语动词常用(should)＋动词原形，如句9。

5.由句10可以看出，在句型"It is time that..."中，从句的谓语动词既可以使用一般过去时，也可以使用should＋动词原形。 　　

　　一、错综时间条件句(混合条件句)

当条件状语从句表示的动作或行为和主句表示的动作或行为所发生的时间不一致时，被称为"错综时间条件句"，动词的形式要根据它所表示的时间作出相应的调整。