高中语法虚拟语气知识点

虚拟语气 英语动词有三种语气 We met in this room . 陈述语气 Do come to the meeting next Friday . 祈使语气 If I were you , I would study hard . 虚拟语气 虚拟语气是一种特殊的动词形式(verb structure), 用来表示说话人所说的话不是一个事实 (fact)，而只是一种假设(hypotheses )愿望(wishes)、建议(suggestion) 或怀疑(doubt)等等。 1.If 引导的条件状语从句（1） If 从句 主句 与现在相反 did（be用were) Would /should /could / might +do 与过去相反 had +done Would/should/ could/might+have + done 与将来相反 did（be用were) were to+ do should +do Would/should/ could/might)＋do If I won the lottery now, I would buy an expensive car. 现在事实相反 If he had hurried ,he could have caught the train. 过去事实相反 If I were to go abroad ,I would go to America. 将来事实相反 2.名词性从句的虚拟语气 (1).Wish 引导的宾语从句 与现在 事实相反 ： 过去时（were） 与过去事实相反：  had+过去分词 与将来 事实相反 ：would/could/might+V e.g.: I wish I were a bird. I wish he hadn‘t done that. (do) I wish I would be rich in the future. （2)表示要求,命令,建议的虚拟语气 宾语从句中常见动词: 一个坚持, 两个命令, 三个建议, 四个要求。即 1). insist 2). order, command 3). advise, suggest, propose 4). demand, require, request, desir