虚拟语气讲解.ppt

虚拟语气是一种特殊的动词形式，一是用来表示说话人所说的话不是一个事实，而是一种假设、猜测、怀疑等(在条件从句中或让步状语从句中)；一是表示说话人的愿望、要求、命令、建议等 (在宾语从句、表语从句、同位语从句)。 eg: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. A.在句型 “It is important (necessary, strange, natural) that .... ” 中，that 后面的从句中的谓语动词用： should + 动词原形 我们有必要出去散散步。 It’s necessary that we should have a walk now.  2 她这样做是很自然的。 It’s natural that she should do so.  3 重要的是我们要照顾好病人。 It’s important that we should take good care of the patient.  高考链接:1. I didn’t see your sister at the meeting. If she , she would have met my brother. A. has come B. did come C. came D. had come (MET94) 2. When a pencil is partly in a glass of water, it looks as if it . A. breaks B. has broken  C. were broken D. had been broken (MET95)3. You didn’t let me drive. If we in turn, you so tired.A. drove ; didn’t get B. drove ; wouldn’t getC. were driving ;wouldn’t get D. had driven ; wouldn’t have got (MET95)4.Without the air to hold some of the sun’s heat, the earth at night ,too cold for us to live.A. would be freezing cold B. will be freezing coldlyC. would be frozen cold D. can freeze coldly(上海97)  1. It is (high / about ) time that…从句中的谓语动词用过去式或should＋动词原形，should不能省略． 三、虚拟语气在其他从句中 It is high time that you went / should go to school. 2. If only 引导的感叹句（要是．．．该有多好啊)表示现在的情况,应用过去式; 如果是过去的情况,应用过去完成时态 If only I knew the answer! If only I had seen the film yesterday! 3. would rather + 从句　动词用过去式或过去完成时　　 I would rather you told me the truth. I would rather you had gone there last Sunday. 4. as if ( as though) 看起来　常用虚拟形式，即表示与现在事实相反，用过去式；与过去事实相反用过去完成式 (had done). He treats /treated the boy as if he were his own son. He speaks/ spoke as if he had known about it 5. even if ( even though)即使　 Even if he were here, he could not solve the problem. Even if I had bee