高中语法虚拟语气用法讲解课件(共36张PPT)

The Subjunctive Mood 虚 拟 语 气 英语中的三种语气 陈述语气：用于陈述事实。 祈使语气：用于提出请求、命令等。 虚拟语气：①表示说话人说的不是事实而是一种假设、猜想等。②表示说话人的愿望、要求、命令、建议等。 一.虚拟语气在条件从句中的用法 条件句有两类，一类是真实条件句，一类是虚拟条件句。 （1）真实条件句：假设的情况是有可能发生的。 If it doesn’t rain tomorrow, we will go to the park. （2）虚拟条件句：假设的情况是过去或现在都不存在的，或将来都不可能发生的。 If he had seen you yesterday, he would have asked you about it. 1.与现在事实相反 从句-----过去式(be通常用were)， 主句----should (would, could, might)+动词原形”： If I knew her number I could ring her up. If he were free, he would help us. Should用于第一三人称 would表示结果， might表示可能性，could表示能力、允许或可能性 If I had a lot of money I would buy a villa. 1.如果我是只鸟，我就能在天上飞了。 I f I were a bird, I could fly in the sky. 2.If I ______(有) a knife，I ___________(就杀了) you。 had would kill 2.与将来事实相反或将来的愿望推测 从句----did /should +do /were to do 主句-----should/ would/ could/ might +do If he got up early, he would be on time. 3、与过去事实相反 从句——had done 主句——should/ would/ could/ might +have done If he __________ more carefully, he _________________ the