《情态动词要点提炼》PPT课件.ppt

情态动词要点提炼,can/ be able to must/ have to shall用于第二、三人称 would/could 不表过去时 would/used to do need/ dare 情态动词表推测 情态动词表虚拟,can/ be able to,在过去时中，was/were able to表过去成功地做了某事，could 不行 He was able to reach Mount Qomolangma in 1982.,must/ have to,must 表示说话人的主观意志， “必须” have to 表示客观需要，“不得不” We must hand in our papers today. We have to get there before dark.,Shall用于第二、三人称,Shall 用于第二、三人称表命令、警告、允诺 If you dont finish your homework, you shall be punished.,Would/could 表示婉转的语气,Would you mind if I smoked a cigarette? Could you wait for a while?,would/used to,When I was in Shanghai, she _ tell me about the great changes there. He _ drink alcohol, but now he drinks beer. I _ be waiter, but now a taxi-driver.,would 表示过去的习惯动作,used to 表示过去的习惯动作、状态，往往表示现在已不存在的习惯,此时可与used to互换,used to/ would,used to,used to,1. 既可作情态动词又可作实义动词，一般在肯定句中作实义动词，在否定句和疑问句中作情态动词,判断以下是什么动词 Dare you go out alone at night? The bike needs to be repaired. I need a bike. I dont dare go out alone at night. She dared not answer. I didnt dare quarrel with them.,3. dare 作实义动词，用于否定句、疑问句时，to可以省略，即 dont dare (to) do,2. dare作情态动词也有过去式,need and dare,情态动词表推测,must/ may/ might do,must/ may/might have done,cant do,cant/couldnt have done,Can do?,Can/Could have done?,情态动词表虚拟,should / shouldnt have done might have done 表虚拟(此时不用may have done) could have done 表虚拟(此时不用can have done) need / neednt have done was to have done would/should like to have done would/should have liked to do was supposed to have done,表虚拟情态动词都要用过去时,didnt need to do,1. Who do you think could have called on us? Maybe Linda _ it. A. could do B. can do C. could have done D. could be done 2. The little girl _ touch the worm. A. dares not B. dares not to C. dare not to D. dare not 3. I _ people when they are talking but now I have corrected the bad habit. A. would interrupt B. used to interrupt C. was used to interrupting D. used to interrupting 4. Where is my reference book? It was here a moment ago. Someone _ it by mistake. A. could have taken B. must take C. might take D. must have taken 5. The city stadium is only a stones away, you _ take a bus. A. need not to B. not need to C. dont need D. need not,6. He was a good swimmer so when the ship sank he _ swim across the river. A. might B. could C. would D. was able to 7. She _ the exam again since she had already passed it. A. neednt have taken B. didnt need to take C. neednt take D. mustnt take 8. When we reached the pier(码头), the ferry-boat had not arrived yet; so we _. A. needed not to hurry B. neednt have hurried C. didnt need to hurry D. had not needed to hurry 9. He must have missed the train, _ he? A. mustnt B. didnt C. neednt D. isnt 10. Havent I told you already that you _ have my answer tomorrow morning? A. will B. shall C. should D. would,You _ (be) to Beijing before, for you are so familiar with it. Mary had some difficulty in finding the drugstore. She _ (not be) there before. Your homework is poorly done. Its difficult for me to correct it. You _ (do) it better. I _ (lend) you the VCD player. Why didnt you ask me? I _ (go) to the baseball match, but the weather was very bad. So I didnt go. You _ (buy) the microwave oven. Ive bought one for you. She didnt answer the phone. She _(sleep). He _(have) his supper now, for the dining hall is still closed. The little girls eyes were red. She _(cry). The boy _ (go) to school that morning, but he slept until 10 oclock.,must have