选修8unit1虚拟语气.ppt

;Subjunctive Mood;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。;3. 在条件句中的应用 　　 条件句可分为两类，一类为真实条件句，一类为非真实条件句。非真实条件句表示的是假设的或实际可能性不大的情况，故采用虚拟语气。;1).真实条件句? 　　真实条件句用于陈述语气，假设的情况可能发生，其中 if 是如果的意思。;2). 非真实条件句。;1.If I had enough money, I would travel around the world. 2.If I were you, I would give AIDS patient a hug. 3. If I had taken your advice, I wouldn’t have made a mistake. 4. If he had been there, it wouldn’t have happened. ;5.If it should rain tomorrow, they wouldn’t go for an outing. 6.I think we could do it, if we planed it properly and could borrow the tools. 7. If we were to have three days off , we would enjoy a very happy life. ;3). The meaning of the sentence of subjunctive mood;;一：虚拟语气在条件状语 从句中的用法。;二：虚拟语气特殊句型：;I wish I were as tall as you.　我希望和你一样高。;2. would rather that;3. as if /though + Clause ;4.It’s (about/high) time +that ---;5.表示要求，命令，建议的虚拟语气。;我们建议Tom 去休息一下。 他坚决要求我到场。 国王命令囚犯明天要实施死刑。 他们要求我们派他们去那儿工作。;I suggest that we (should) hold a meeting next week. He insisted that he (should ) be sent there.;以上动词相应的名词构成的名词性从句包括主语从句，表语从句和同位语也要使用虚拟语气。从句中的动词形式一样。 order, advice, suggestion, proposal, demand, request, desire;It’s suggested that the plan be carried out. My demand is that she should come to see me once a week. All of us are for the advice that the chemical factory should be closed down.;6.without和but for 构成虚拟。but for要不是 Without sunlight, people’s life would be different from today. But for your help, I wouldn’t have finished the work. Without your help, I would have failed. But for water, it would be impossible to live in the desert.;7. If only …要是就好了 If only I knew his name! If only we had followed your advice! If only I could see him again!;8. It’s necessary /strange/ natural/ important / pity /no wonder/impossible + that---Clause 从句中的动词要用虚拟，即（should）+动词原形;9. 某些简单句的固定句型： Heaven help him! God bless you! May you succeed! Long live the People’s Republic of China!;;典型例题　There was plenty