高中英语教学论文 情态动词的用法(3) 牛津版（通用）

主题: 情态动词预学案一: can .could. be able to1. I can ride a bike.2. I couldnt ride a bike two years ago.3. _ Could I use your computer?_ yes, you can._ No, you cant.4. It can snow in May here sometimes.5. Children can sometimes be very trying.6. How could you say so?7. What can do ?8. Where can I go ?结论: _和_表示能力；_ 表示谨慎地提出请求和； 和表示特异；6. 7. 8 中 can 与whatWhere. How 连用， 表示，和。1. _ Who can it be?_ It cant be Tom.2. He cant be working now.3. He cant have left. I saw him a minute ago.结论:表示对现在状况的否定性推测；表示对正在发生的情况的否定性推测；表示对过去发生的情况的否定性推测；1.I can speak English.2.She could speak English when she was four.3.You will be able to overcome the difficulty.4.They were able to get there on time.结论： 只能表示能力，而 还有别的意义； 表示长时间内的能力， 表示具体的一次；有各种各样的时态， 只有现在时和。二：may might1. May I come in ?Yes , of courseNo, you cant./ mustnt.2. You may as well say white is black3. May you succeed.4. He may have missed the train.5. He may be doing his homework now.6. He may be a student.结论： 表示迟疑地提出请求 和；翻译成“你有良好的理由做什么” 表示祝福； 表示对现在状况的可能性推测； 表示对正在进行的情况的 推测； 表示对过去发生的情况的 推测。三：must have to had to1._ Must I go now?Yes , You _.No, You _.2. You mustnt break the rules.3. He must be a sutdent.4. He must be working.5. he must have been to beijing.6. He must have been home yesterday.结论：1 表示。2 表示. 表示对现在状况的_推测；表示对正在发生的情况的_推测；_ 表示对过去发生的情况的_推测1. I Must study hard.2. You have to copy it again.3. You will have to copy it once.结论： Must表示。Have to 表示且有时态和时态四：will would1. would you like to come?2. If you will listen to me I will say it again.3. He would sit there for hours.Will would 表示和。五：shall1. _ Shall he come in?_ Yes , please._ No, please dont.2. Shall I open the door?3. You shall do as I say.4. You shall clean the room after school.5. You shall have the book after I finish it.结论：shall 与第人称和人称连用，表示征询对方的意见；Shall 与第连用表示，和。六：should / ought to1. Teachers should care about their students.2. It is 10 oclock now; Mr Li should be in the office.3. You should have helped him but you didnt.结论：1表示； 2 表示；3表示过去本应该做什么结果没这样七：dare need1. Dare you go there alone?2. I dare not go there alone.3. I dared to go there alone4. She dares to go there alone.结论：当dare 是情态动词时，后面接动词 且没有 和的变化。当dare 是实意动词时，后面接动词且有和的变化。八： 区别A. cant may not mustnt neednt dont have toB:1. neednt do / neednt have doneA: After school ,I have to clean the classroom.B: You _.I did it an hour ago.A: Yesterday He went to the station by taxi,B: He _. It is not farfrom here.2. should do / should have doneThis time you have got the first place.You _ more harder later.You fai