授课学案学生姓名：授课教师：颜丹丹班主任：科目：初二英语上课时间：2016 年月日时—时授课内容【概念导入】一、情态动词的定义：表示可能，怀疑，允诺，愿望，义务，必要，猜测等的动词是情态动词。
初中阶段主要学习的情态动词主要有can/could,may/might,must,haveto,shall/should,will/would,need,dare,ought to,etc.强调情态动词除have,be able和ought后，都不带to的不定式。
【语法讲解】情态动词can,could,may,might的用法1.can的用法(1)能够，会（体力与智力方面的能力，可与be able to 互换）。
Eg. 1.Can you draw horses? 你会画马吗？（智力方面）2.We can go skating. 我们会滑冰（体力方面）3.Can you play basketball? 你会打篮球吗？(2)可能（表客观的可能性或推测，用于否定句和疑问句）。
Eg. 1.You can’t be wrong. 你一定没错。
（可能性）2.He can’t be in the room. 他不可能在房间里。
(3)表示非正式的请求或许可，此时可与may互换，但may更正式。
Eg. 1.Can/May I borrow your book? 我可以借一下你的书吗？2.colud的用法(1)can的过去式，意为：能，会，表示过去的能力。
Eg. 1.He could write poems when he was 10. 他十岁就会写诗。
2.I could swim when I was seven years old. 我七岁时就会游泳了。
(2)当could出现在句首引导问句的时候，通常不做过去时，而表达委婉的建议和要求。
Eg. 1.Could you do me a favour? 你能帮我一个忙么？2. -Could I use your pen? 我能用一下你的钢笔么？-Yes,you can. 可以。
注：以can开头的一般疑问句，其肯定回答和否定回答分别用can和can’t。
3.may的用法(1)表许可，用于陈述句。
Eg. 1.You may go home now. 你现在可以回家了。
(2)表正式的请求或许可，用于一般疑问句。
回答may提出的问题，肯定形式为Yes,please./Yes,you may.否定形式为No,you mustn’t./No,you can’t.Eg. 1. -May I use your computer? 我能用你的电脑么？-No,you can’t. 不可以。
2. -May I go home now? 我现在可以走了吗？-No,you mustn’t. 不，不可以。
(3)或许，大概（表可能性，用于陈述句，语气没有must强烈，只有一半的可能性）。
Eg. 1.He may come tomorrw. 他明天可能会来。
（不太有把握）2. -________ I borrow your MP3?-Sure.Here you are.A.MayB.ShouldC.MustD.Would4.might的用法(1)might是may的过去式，与may用法相似，常用于过去时；Eg. 1.He said Kate might go to the party.But I don’t think so.他说凯特去过那个聚会。
不过我不是这么认为的。
(2)用在疑问句式中，表示委婉语气。
Eg. 1.Might he know the answer? 他可能知道答案吗？【题组训练】用适当的情态动词填空。
1.Don’t drive too fast,or you __may__have an accident.2.A teacher___may___also make a mistake if he is not careful enough.3. -Let’s go dancing tonight.-Sorry,I___can’t___.I have to go to a meeting.4.Let’s set out for Beijing before 5 a.m.Then we will be able to（能够）get there before sunrise.5.That man can’t （不可能）be Mr. Zhang.He has gone to Beijing on business.6.I could/was able to (能，会)fly a kite at the age of five.【课堂总结】can和may的用法can和may表可能性的区别【课时训练】1.The girl riding a horse there______be Shirley.Her left lag was badly hurt in an accident yesterday.A.needn’tB.may notC.can’tD.mustn’t2. -Do you have any plans for this summer vacation?-I’m not sure.I______take a trip to Taiwan.A.mustB.needC.mayD.should3. -_____ I know by what time you want the project to be done?-By the day after tomorrow._____you finish it on time?A.May;CanB.Must;NeedC.Could;MustD.Need;Would4. -How nice that Lucy has been invited to the party too!-Well,Lucy______not come.She is not certain whether her mother will allow her to.A.mightB.wouldC.mustD.need5. -Whose T-shirt is this?-It_____be Tony’s.I am not sure.A.canB.mayC.mustD.will6. -______I take the book out?-I'm afraid not.A. WillB. MayC. MustD. Need7.I’m afraid Mr. Harding _________see you now. He’s busy.A. can’tB. mustn’tC. shouldn’t D .needn’t(参考答案：CCAABBA)课后作业学生姓名：授课教师：颜丹丹班主任：科目：初二英语上课时间：2016 年月日时—时【巧学活用】1. I told Sally how to get here, but perhaps I _______ for her.A. had to write it outB. must have written it outC. should have written it outD. ought to write it out2. —There were already five people in the car but they managed to take me as well.—It _______ a comfortable journey.A. can’t beB. shouldn’t beC. mustn’t have beenD. couldn’t have been3. It’s nearly seven o’clock. Jack _______ be here at any moment.A. mustB. needC. shouldD. can4. Johnny, you _______ play with the knife, you _______ hurt yourself.A. won’t;can’tB. mustn’t; may shouldn’t; must D. can’t;shouldn’t5. The fire spread through the hotel very quickly but everyone _______ get out.A. had toB. wouldC. couldD. was able to6. —When can I come for the photos? I need them tomorrow afternoon.—They _______ be ready by 12:00.A. canB. shouldC. mightD. need7. —I stayed at a hotel while in New York.—Oh, did you? You _______ with Barbara.A. could have stayedB. could stayC. would stayD. must have stayed8. —Are you coming to Jeff’s party?—I’m not sure. I _______ go to the concert instead.A. mustB. wouldC. shouldD. might9. I was really anxious about you. You _______ home without a word.A. mustn’t leaveB. shouldn’t have leftC. c ouldn’t have leftD. needn’t leave10. —Is John coming by train?—He should, but he _______ not. He likes driving his car.A. mustB. canC. needD. may11. A left-luggage office is a place where bags _____ be left for a short time,especially at a railway station.A. shouldB. canC. mustD. will12. I wonder how he _______ that to the teacher.A. dare to sayB. dare sayingC. not dare sayD. dared say13. When he was there, he ___ go to that coffee shop at the corner after work every day.A. wouldB. shouldC. had betterD. might14. It has been announced that candidates _____ remain in their seats until all the papers have bee n collected. A. can B. will C. may D. shall15. How ______ou say that you really understand the whole story if you have covered only a part of the article? A. can B. must C. need D. may16. —I hear you’ve got a set of valuable Australian coin. _______ I have a look?—Yes, certainly.A. DoB. MayC. ShallD. Should情态动词练习参考答案1. C。