虚拟语气（the subjunctive mood）虚拟语气用于表示主观愿望和假设的虚拟情况。所讲的内容往往是与事实相反的；或是其实现的可能性微乎其微，甚至于没有实现的可能性。当然，有时为了使说话的语气客气、缓和、委婉，也使用虚拟语气.虚拟语气是英语语法中的难点。考生应主要掌握虚拟语气在下列情况下的用法：① 虚拟语气在非真实条件句中的用法；②在宾语从句中的用法；② 在状语从句中的用法；④及主语从句、同位语从句、表语从句中的用法；⑤在一些特殊句型中的用法等。一、用于非真实条件句中的虚拟语气。if 从句的谓语形式主句的谓语形式与过去事实相反had donewould have done与现在事实相反did/werewould do与将来事实相反did/wereshould dowere to dowould do注意点： 1. 省略if 当条件状语从句的谓语含有were, had, should时，可以将它们放在句首，省略if。1. if he should act like that again, he would be fired immediately. =should he act like that again, he would be fired immediately. 2. if you were the manager here, what would you do? =___were you the manger here_______________, what would you do?______if it should rain ____/_________should it rain____ tomorrow(如果明天下雪), we wou
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Unit 5 Canada—“The True North”(Period 1 Warming up and reading)