高中情态动词虚拟语气用法总结课件

1、Revision for Modal Verbs 1The basic uses of Modal Verbs 6、Dare 7、Need 8、ought to 1、Can / could 2、May / might 3、Must 4、Shall / should 5、will / would 21. Can 表示能力 The parrot can speak three languages.表示允许 Can I borrow the book from the library.表示可能性 Shanghai can be very cold in March.Could 过去式；语气更委婉2.

2、 Can 与 be able toCan 表示一般能力，而be able to表示经过学习训练可以达到的 能力。31. Must 表示肯定的猜测,但只用于肯定句，而mustnt 表示“禁止、不准”Eg: She must be there. You mustnt smoke here.2. Must 、have toMust表示主观Have to表示客观需求 “不得不.”Eg: 1.You must eat it up. 2. Its raining, we have to go home.5Shall /should 1、第一、三人称疑问句中表示“请求 或征求对方意见。Eg. Shall I

3、 get you a cup of coffee?2、第二、三人称陈述句中表示命令/警告威胁 “应该，必须”Eg: You should be here on time.should 过去式 语气更委婉6Will/ would 1、表示意愿 Ill try my best to work out the difficulty.2、表示意图What will you do?3、表示请示 Will you help me to put these books in order?71、情态动词:用于否定、疑问句、条件从句中。 eg. 1. I dare not swim. ( dare not do

4、 sth) 2. How dare you do such foolish things? 3. I wont allow you to swim in the river, even if you dare do it.Dare 2 、实意动词:后加不定式。 eg. She dares to jump. 8Ought to 1、应该 一般可与should 互换 Eg: Lindy has a bad cold, we ought to visit her.2、其否定式为ought not toEg. The old ought not to eat too much sugar.10The

5、subjunctive mood 12一、虚拟语气在条件状语从句中的用法（if条件句）现在过去未来did / werehad donewould/could/should/might +V.(原)would/could/should/might+have+p.p.1. did / were2. should do3. were to dowould/could/should/might + V.(原)Eg: If I were you, I would work harder.Eg: If I had worked hard, I would have passed the exam.Eg:

6、1. If she should not come tomorrow, we should put off the meeting. 2.If it were to snow, I would be pretty happy. 从句 主句14If you _tomorrow, you _find the new manager working in the office. A. should come; would B. would come; wouldC. will come; should D. comes; mightAIf the parents _at the hospital e

7、arlier after the accident, the child would have been saved.A. arrives B. arrive C. had arrived D. has arrivedC15I didnt see your sister at the meeting. If she _, she would have met my brother.A. has come B. did come C. came D. had comeD If my lawyer _here last Sunday, he _ me from going .A. had been

8、; would have preventedB. had been; would preventC. were; would prevent D. were; would have preventedA16If you had told me in advance, I _him at the airport.A. would meet B. would had meetC. would have met D. would have meetCIf there were nor subjunctive mood, English _much easier.A. Will be B. would

9、 have been C. could have been D. would beD17二、虚拟语气特殊句型： wish + 宾语从句现在：过去：未来：过去时 (did/were)过去完成时 (had done)would/could/might+V. shouldI wish I were a bird. (现在)I wish I hadnt made such a mistake. (过去)We wish our parents wouldnt punish(惩罚） us. (未来)18The picture exhibition bored me to death. I wish I_t

10、o it.A. hadnt gone B. havent goneC. didnt go D. could not have goneAHow I wish I _that! Everybody present was angry with me.A. didnt go B. hadnt done C. wouldnt do D. wasnt doingB20-He is a brave man.-Yes, I wish I _his courage.A. Have B. had C. will have D. would haveBTom can take his car apart and

11、 put it back together again. I certainly wish he _me how.A. teaches B. will teach C. has taught D. would teachD212. would rather that -现在：过去：未来：I would rather you paid me now. (现在)I would rather you had gone, too. (过去)Dont come. I would rather you came tomorrow. (未来)过去时过去时过去完成时233. as if /though + 从

12、句现在：过去：过去时过去完成时He looks as if he were drunk.They talked as if they had been friends for years.She loves the baby as if it were her own son.It seems as if it were spring.I remember the whole thing as if it had happened yesterday.24She sings as if she _a boy.CA. is B. was C. were D. areWe felt as if w

13、e _each other for years.CA. knew B. were knowing C. had known D. have knowing264.Its (about/high) time +that -过去时你该走了。我们该睡觉了。Its high time that you went.Its high time that you were going.Its time that we went to bed.275. 表示要求，命令，建议的虚拟语气。宾语从句。常见动词：一个坚持：insist两个命令：order, command 三个建议：advise, suggest,

14、propose四个要求：demand , require, request, desire 这些动词后面的宾语从句要使用虚拟语气用法。即从句中的动词 使用should + 动词原形，或者将should省略。286.without和but for 构成虚拟。(but for要不是)与现在事实相反，主句would/should/could/might +v原型与过去事实相反，主句would/should/could/might+ have done Without sunlight, peoples life would be different from today. But for your

15、help, I wouldnt have finished the work. Without your help, I would have failed. But for water, it would be impossible to live in the desert.307. If only (要是就好了) 与现在事实相反用过去式与过去事实相反 用过去完成时与将来事实相反 用should/could/would/might +v原型If only I knew his name!If only we had followed your advice!If only I could

16、see him again!要是我们的父母能和我们住在一起就好了。要是我没错过火车就好了！If only our parents could live with us!If only I hadnt missed the train!318. Its necessary /strange/ natural/ important + that - 从句中的动词要用虚拟，即(should)+动词原形It is important that we ( should ) master a foreign language.It is strange that she refuse to come to

17、 the party.Its necessary that we should study hard.32三： 虚拟语气假设条件句型注意点：1.假设条件从句谓语动词发生的时间与主句所假设的谓语动词不一致，叫做错综条件虚拟语气。主句和从句的谓语动词要依照假设的时间而顶。If the weather had been finer, the crops would be growing still better.If you had followed the teachers advice, you wouldnt be in the hospital.332.假设条件虚拟倒装。 条件从句中有sho

18、uld， 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 couldnt have got over the difficulties.Were it not for your advice, we couldnt have got over the difficulties.34If 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, what should we do?Should there be a flood, what should we do?35_the exam, he would have attend a college.A. If he passed B. Had he passe