英语动词有三种语气:陈述语气、祈使语气、虚拟语气(用来表示说的话不是事实,或者是不太可能发生的情况,而是一种愿望,建议,假设的语气叫虚拟语气。) 虚拟语气的考点: 1.条件句中的虚拟语气的用法; 2.条件句中虚拟语气的倒装; 3.名词性从句中虚拟语气的用法; 4.几种特殊结构中虚拟语气的用法; 5.虚拟语气时态的判定。 一、If 引导的虚拟条件句 区别: If it rains tomorrow,the crops will be saved. 陈述语气 If it rained tomorrow,the crops would be saved. 虚拟语气 真实条件状语从句与非真实条件状语从句 真:eg . If he doesn’t hurry up, he will miss the bus. 如果他不快点,他将错过巴士。( 真实条件状语)(不是虚拟语气) If he is free, he will ask me to tell stories. 如果他是空闲的,他会要求我讲故事。(真实条件状语)(不是虚拟语气) 非真:eg. If I were you, I would go at once. 如果我是你,我马上就会去。 (非真实条件状语从句) 二、虚拟语气在条件从句中: 【例句】1.If you had come a few minutes earlier,you w ould have met him. 要是你早来几分钟的话,你就能见到他了。(与过去事实相反) 2.If it w ere sunny tomorrow,i w ould come to see you. 明天要是天气好的话,我来看你。(与将来事实可能相反) 3.If i w ere you,i w ould go at once. 假如我是你的话,我会马上走。(与现在事实相反,事实上我不可能是你) 主从句的谓语形式 时间 If 从句的谓语形式 主句的谓语形式 现在 did/were Would/could/should/might+V.(原原 过去 had done Would/could/should/might+have+p.p 将来 1.did/were 2.should do 3.were to do Would/could/should/might+V.(原) (一)与现在事实相反的虚拟条件句 表示与现在事实相反的情况, 例 1.If I were you, I would take an umbrella. 如果我是你,我会带把伞。(事实:我不可能是你) 2.If I knew his telephone number, I would tell you. 如果我知道他的电话号码,我就会告诉你。(事实:不知道) 3.If there were no air or water, there would be no living things on the earth. 如果没有水和空气,地球上就不会有生物。(事实:地球上既有空气也有水) 4.If I had...