高中英语 Unit 2 Learning from Helen Keller Grammar教案 重庆大学版必修2

1、Unit 2 Learning from Helen Keller Grammar章节：Book2 Unit2 课时： 1 课题名称Unit2 GrammarModal Verbs () Modal Verb + have done三维目标1. Students get to know the structures of modal verb + have done.2. Students can use modal verb + have done in their daily life.3. Students can summarize the grammatical phenomenon

2、 while learning English.重点目标1. Understand the definition of modal verb + have done.2. Master the usage. 难点目标 Apply modal verb + have done导入示标Modal Verb + have done目标三导Step 1. Learning & Doing & Thinking 1What is the definition of modal verb + have done?【Learning】Study the rule must have done can/cou

3、ld have donemay/might have doneshould/shouldnt have doneneednt have done【Doing】1）A: Why is the road so wet? B: It must have rained last night.2) A: Where are the girls? Could they have gone home? B: No, they cant have gone home. Its so early.3) A; The lights are off in their room. B: Where have they

4、 gone? A: They might have gone to the cinema.4) A: Heres a doll for your daughter. B: Thank you so much. Its beautiful. But you neednt have bought it. You have bought so many for her.【Thinking】What is the rule?_ _ 表示对过去事情的肯定推测，译成“一定做过某事”，该结构只用于肯定句。 _ _ 表示对过去事情的否定推测，译成“不可能做过某事”。_ _ 表示对过去行为的怀疑，用于疑问句，译

5、成“可能做过吗？”。_ _ 是虚拟语气，表示对过去事情的假设，意思是本来能够做某事而没有做。_ _ 对发生过的事情的推测，意思是“可能已经”或“也许已经”，用于肯定句。 _ _ 意思是“本来应该做某事，而实际没做。” _ _ 表示本来不应表示本来需要做某事而没有做。“_ _ 该做某事，而实际做了。含有指责对方或自责的含意。 _ _ 表示“本来不需要做某事而做了”。Step 2. Learning & Doing & Thinking 2What is the difference?【Learning】Find the rule.【Doing】Fill in the blanks.1). The

6、 river is rising. It _ _last night.(rain)2). I saw Mary in the library yesterday.(see) You_ _ her. Shes been abroad.3). There is no light in the room. Can they have gone out? 4). Given more attention, the trees _ _ better.(grow)5). What has happened to George? I dont know. He _ _ got lost.6). He _ _

7、 you more help, even though he was busy. (give)7). You _ _her the truth earlier.(tell)8). There was plenty of time. She _ _.(worry)【Thinking】The difference between different modal verb + have done?Step 3. Learning & Doing & Thinking 3What are usual usages?【Learning】Study the rule by reading the sent

8、ences.【Doing】1) Harry is feeling uncomfortable. He _ too much at the party last night. (2013 辽宁) A. could drink B. should drink C. would have D. must have drunk2) Thank you for all your hard work last week. I dont think we _ it without you. A. can manage B. could have managed C. could manage D. can

9、have managed3) We _ have bought so much food now that Suzie wont be with us for dinner. (2012 江西) Amay not Bneednt Ccant Dmustnt 4) They _ have arrived at lunchtime but their flight was delayed. (2011全国)A. will B. can C. must D. should【Thinking】What is difference between modal verbs and modal verb +

10、 have done?达标检测1）Choose the best answer.1. I spent two weeks in London last summer. Then you must have visited the British Museum during your stay, _ you? （2014重庆） A. mustnt B. havent C. didnt D. hadnt2. I _ myself more - it was a perfect day. (2013 浙江)A. shouldnt have enjoyedB. neednt have enjoyed

11、C. wouldnt have enjoyedD. couldnt have enjoyed3. My book, The House of Hales, is missing. Who _ have taken it? (2014 陕西)A. need B. must C. should D. could 4. Sorry, Mum! I failed the job interview again. Oh, its too bad. You _ have made full preparations. (2015 福建)A. must B. can C. would D. should2)

12、 Fill in the blanks.John: Hello, Mary. How are you today? I hear you werent well last week.Mary: Im much 1_(good) now. Thank you.John: Whats the matter? Nothing serious, I hope.Mary: Oh, no, I had 2_ bad cold and had to stay in bed for two days.John: Im glad that youre better,3 _. I hope it was the

13、last cold of winter. What about your friend Ann? I hear she was ill, 4_.Mary: She was ill, but she is all right now. I think she 5_(catch) my cold.John: Everybody seems to have one now. I expect its the sudden change of weather. One day 6_ and the next day cold.Mary: And very windy, too. Thats7 _ Im

14、 wearing a sweater. What do you think of it? Pretty, isnt it?John: It certainly is. It is magnificent. It 8_(cost) a lot. Where did you find it?Mary: Oh, I got it at a sale; it was quite cheap.John: Really? Well, Mary, I must say it suits you very much. What a pity we men cant wear 9_(beauty) sweaters!Mary: Never mind. Lets go and buy one like it to send to your sister Linda in America.John: I