湖南地区英语学科牛津英语虚拟语气演示课件.ppt

If I had time, I would attend the meeting. If he had hurried ,he could have caught the train. If I were to go abroad ,I would go to America. 1. Even if he _______(be) here, he couldn’t solve the problem. 2. Without air, there __________(be) no living things. 3. But for your help, I __________________ (not, do) it. 4. If only I ____________(take) his advice, but I didn’t. * * 1.英语动词有三种语气， 陈述语气，祈使语气和虚拟语气。 2. 定义：用来表示说的话不是事实，或者是不可能发生的情况，而是一种愿望，建议，假设的语气叫虚拟语气。 　一、虚拟语气在条件句中 主语＋should, would, might, could＋动词原形 1、If+主语+动词过去式 2、If+主语+were to+ 动词原形 3、If+主语+should +动词原形 与将来相反的假设 主语＋should, would,might, could＋have +过去分词 If+主语+had +过去分词 与过去相反的假设 主语+should,would, might,could＋动词原形 If+主语+动词的过去式（动词be用were) 与现在事实相反的假设 主句 虚拟条件句 如果我是你，我就会努力学习． 如果我知道他的电话号码，我就给他打电话了． 如果明天下雨的话，我们会取消比赛． If I were you, I would work harder at my lessons. If I had known his telephone number, I would have called him. If it should \were to rain, we would call off the match. 使用虚拟条件句要注意的几点： １. 当条件状语从句表示的行为和主句表示的行为所发生的时间不一致时，被称为：错综时间条件句“，动词的形式要根据它所表示的时间作出相应的调整． If you had followed my advice , you would be better now. If you had studied hard before, you would be a college student now. 如果你听我的建议，你现在就会痊愈了． 如果你努力学习的话，你现在就会是大学生了． ２．省略句 在条件句中，可省略 if，把were ,had, should 提到句首，变为倒装句式． If I were at school again, I would study harder. Were I at school again, I would study harder. If you had come earlier, you would have met him. Had you come earlier, you would have met him. If it should rain tomorrow, we would not go climbing. Should it rain tomorrow, we would not go climbing. 注意：若省略的条件句中的谓语动词是否定式，不能用动词的缩略形式．如我们可以说 Were it not for expense, I would go abroad now. 不可以说　Weren’t it for the expense,… ３、用介词短语代替条件状语从句．常用的介词有with, without, but for 等。如： What would you do with a million dollars (=If you had a million dollars)? We could not have finished the work ahead of time without your help (=if we hadn’t got your help). But for the rain(=If it hadn’t been for the