初中英语语法-虚拟语气PPT课件.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。（见课本P 170页）。 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、虚拟语气在条件状语从句中的用法;1. If I had HIV, I would know because I would feel sick. 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. ;二、虚拟语气特殊句型：;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。; 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);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 + that --- 从句中的动词要用虚拟，即(should)+动词原形;9. It’s +high time+ that --- 从句中的动词要用虚拟，即 should+动词原形. 也可用动词过去时态。 It is high time that we should pay more attention to our environment. It is high time that we payed more attention to our environment.;10. 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!;三： 虚拟语气假设条件句型注意点：;2.假设条件虚拟倒装。 条件从句中有should， were， had三个助动词可以把if省略，并将这三个词提至句首。 If I were you, I would give it up. Were I you, I would give it up. If it were not for your advice, we couldn’t have got over the difficulties. Were it not for your advice, we couldn’t have got over the difficulties.;If I had had time, I would have run round that lake again. Had I had time, I would have run round that lake again. If there should be a flood,