高中英语语法虚拟语气（共15张PPT）

虚拟语气（subjunctive mood） 陈述语气：陈述事实。有肯定、否定、疑问、 感叹等。 祈使语气：表示请求、命令、建议或劝告等 虚拟语气：表示主观愿望、建议或与事实相反 的假设 一. 语气 二.虚拟语气在条件句中的用法 1.条件句 真实条件句： 虚拟条件句：（非真实条件句） 假设的情况：① 与事实相反 ② 根本不可能实现 ③ 发生的可能性很小 虚拟条件句中谓语动词的形式 would / should /would /could do should do / were to do 与将来事实相反 would / should /would /could have done had done 与过去事实相反 would / should /would /could do 过去式 （did / were） 与现在事实相反 主句中的动词 if从句中的动词 功能 eg: 1. If I ________ (be ) you, I would study English harder. 2. If I ___________ (know) your address, I would have call on you . 3. If it __________ (rain) tomorrow, the crops would be saved. were had known should rain Translation If I knew his telephone number, I would ring him up. If he hadn’t been ill, he could have come yesterday. If he should / were to get there this afternoon, he would telephone me. （现在）如果我知道他的电话号码，我就给他打电话。 2.