九年级英语（上) 语法教案 情态动词

情态动词
教学内容
情态动词
教学目标
1.学习情态动词的含义和用法
教学重点难点
情态动词在实际生活中的运用
教学过程
第1课时
课前小测
一、对划线部分提问
1、I went to Xinjiang last year.(when)
2、We stayed with my grandmother for a week.(how long)

3、Hainan is in the south of China. (where)
4、This is my uncle.(who)

5、He lives there with his three children. (who)
6、I met them in June. (when)
7、Lingling went to Xinjiang with her parents in July. (where)
导入
1.说说你周末在家的安排？你会帮忙做家务么？都会做什么？…
知识要点
一、知识点：
情态动词三特点
（1）无三单变化 He can fly.
（2）否定直接加not He can’t fly.
（3）后接动词原形 He can fly.
情态动词用法
（1）表能力
can be able to
过去 could was/were able to
现在 can am/is/are able to
将来 will be able to
（2）表义务
must have to
意思差别 必须（主观） 不得不（客观）
时态差别 过去时态 / had to
现在时态 must have/has to
将来时态 must will have to
否定形式差别 needn’t didn’t /don’t/doesn’t/won’t have to
（3）表猜测
肯定猜测 否定猜测 把握度
must can’t不能是must’t或needn’t 很有把握（75%）句中通常有证据
may may not 不是很有把握（50%）句中通常出现“not sure”
might might not 很没有把握（25%）句中通常出现“not sure”
（4）表请求
情态动词 用法区别
can 比较生硬，不礼貌，通常用于上级对下级或长辈对晚辈
could 比较礼貌，最常用
may
might 过分谦卑，较少用
shall 只与第一人称连用
.　　
典型例题
一、改错
1. We can help she.
2. She can’t washes the clothes.
3. What can the cat does
4. Can you eat those beef No, I can.
5. Can you swimming
精选习题
一、补全对话
1. A: you clean the bedroom B: ,I can’t.
2. A: What can you ( http: / / www.21cnjy.com ) B: I cook the meals. are helpful.
3. A: can Amy ( http: / / www.21cnjy.com ) do B: She water the flowers. helpful.
4. A: you cook the dinner B: , I can.
二、句型转换
He can clean the desks.(改为一般疑问句并作肯定回答)
English, can, he ,not ,speak.(连词成句)
Mark can read books. (改为否定句)
at home, What, you, can, do (连词成句)
三、选择题
1. John___ come to see us tonight, but he isn't very sure yet.
A. may B. can C. has to D. must
2. They ___ do well in the exam.
A. can be able to B. be able to C. can able to D. are able to
3. May I take this book out --No, you___.
A. can't B. may not C. needn't D. aren't
4. You___ go and see a doctor at once because you're got a fever.
A. can B. must C. dare D. would
5. --Can you speak Japanese --No, I____.
A. mustn't B. can't C. needn't D. may not
6. --He___ be in the ( http: / / www.21cnjy.com )classroom, I think. --No, he ___ be in the classroom. I saw him go home a minute ago.
A. can; may not B. must; may not C. may; can't D. may; mustn't
7. --Shall I ( http: / / www.21cnjy.com )get one more cake for you, Dad --Thanks, but you___, I've had enough.
A. may not B. must not C. can't D. needn't
8. Even the top stu ( http: / / www.21cnjy.com )dents in our class can't work out this problem, so it ___ be very difficult.
A. may B. must C. can D. need
9. He isn't at school. I think he ___ be ill.
A. can B. shall C. must D. has to
10. ___ I take this one
A. May B. Will C. Are D. Do
11. The children___ play football on the road.
A. can't B. can C. mustn't D. must
12. You ___ be late for school again next time.
A. mustn't B. needn't C. don't have to D. don't need to
13. --Must I do my homework at once --No, you___.
A. needn't B. mustn't C. can't D. may not
14. His arm is all right. He___ go and see the doctor.
A. has not to B. ( http: / / www.21cnjy.com ) don't have to C. haven't to D. doesn't have to
15. --Shall we go and visit the History Museum next Sunday --
A. Here you are B. Sorry, I can't C. Yes, please D. Let me try
小结
1.情态动词的用法
第2课时
导入
1. 当你请求别人做某事时，通常会说…
知识要点
一、知识点：
（一）情态动词的具体用法
1. must表示必须、必要。　　
You must go now.
You must go to bed at 10:00.
You must go to school every week. 　　
2. mustn’t（禁止，不准）
You mustn’t play computer games.
You mustn’t talk in class.
3.在回答引出的问句时，如果是否定的，不能用mustn’t（禁止，不准），而用needn’t, don’t have to（不必）. 　　
---- Must we leave today 　　
---- Yes, you must. 　　
---- No, you don’t have to / you needn’t. 　　
4. must是说话人的主观看法，have to则强调客观需要。Must只有一般现在时，have to 有更多的时态形式。　　
I really must go now. 　　
I had to work when I was your age. 　　
5. must表示推测、可能性（只用于肯定的陈述句），　疑问句中的推测常用can或could，意为“可能”
You’re Tom’s good friend, so you must know where he lives.　　
Your mother must be waiting for you now. 　
Who can it be Can it be Jenny 那会是谁呢？是珍妮吗？
The money has disappeared! Who could have taken it 钱不见了！会是谁拿去的呢？
Oh, how could you be so stupid 哦，你怎么会这么愚蠢呢？
6. should have done sth.(本该做某事，但实际上却没做)
shouldn’t have done sth.（本不该做某事，实际上却做了）
You should have told her when you saw her.
That was stupid. You shouldn’t have done it.
7.情态动词had better(‘d better)表示“最好”的意思，后接动词原形，否定形式为had better not.
You’d better had in your homework on time.
He’d better not stay at home alone.
　典型例题
一、 说明下列句中情态动词的含义（A—能力， B—许可， C—猜测）
1. Marry can speak Chinese.
2. He’s not in the park. He must be at home.
3. Children mustn’t play in the street.
4. Can you dance
5. He must be very busy now.
精选习题
一、 选择正确的答案，并把编号填入括号内。
( ) 1. ____I use your crayons
A. Should B. May C. Must
( ) 2.— Must I give you the book now —No, you ____
A. can't B. mustn't C. needn't
( ) 3. I'm sorry I ____go to the classroom now. It's very late.
A. can B. need C. must
( ) 4. It's time for lunch. You ____be hurry.
A. can B. have to C. must
( ) 5. —Can I ( http: / / www.21cnjy.com )use your eraser Sorry, you ____.I'm using it now.
A. may B. can C. can't
( ) 6. — May I ask you a question now —____
A. Yes, you must B. No, you may C. No, you may not
( ) 7.—Can you speak Chinese well, Tom —____
A. Yes，I can B. Yes， he can C. Yes, I must
( ) 8.____you help me
A. Can B. May C. Need
( ) 9. I____find my cat. Where is it
A. can B. can't C. mustn’t
( ) 10. We ____to help you with your study.
A. may B. can C. would like
( ) 11.-- Look! The ( http: / / www.21cnjy.com )man at the gate ________ be our headmaster.He is always standing there every morning.
-- No, it ________ be him. He is holding a meeting in the office now.
A. must, can’ ( http: / / www.21cnjy.com )t B. must, mustn’t C. can’t, can’t D. can’t, mustn’t
( ) 12.-- I take some photos in the hall
—No, you .
A. Can; need ( http: / / www.21cnjy.com )n't B. Must; mustn't C. Could; won't D. May; mustn't
( ) 13.—Whose not ( http: / / www.21cnjy.com )ebook is this —It Jane’s. It has her name on it.
A. must be B. might belong to C. may be D. could be
( )1 4.—May I watch TV for a while？
—No, you .You have to finish your homework first.
A. shouldn't B. needn't C. mustn't D. won't
( ) 15. _______ you_________ a secretary
A. Do, ought to b ( http: / / www.21cnjy.com )e B. Do, ought to being C. Ought, to being D. Ought, to be
( ) 16.--Could ( http: / / www.21cnjy.com )you please come to the museum with me this afternoon
--Sorry, I ______ . I have to take a piano lesson at 2 pm.
A. couldn’t B. mustn’t C. can’t D. needn’t
( ) 17.--What would you send to your sister as the Christmas gift
--I haven’t decided yet. I ______ send her a hand bag.
A. shall B. may C. must
( ) 18.--Susan has bought a large house with a swimming pool
--It ________ be very expensive. I never even dream about it.
A. must B. might C. can’t D. shouldn’t
( ) 19.—-Excuse me, where are we going to have our class meeting
—-I’m not sure. Ask our monitor, please. He _ know.
A. can B. may C. need D. shall
( ) 20.—Must I be in hospital for a week，Doctor
—No，you . You can go back home tomorrow.
A. mustn’t B. needn’t C. must
( ) 21.–Must I finish watering the flowers now
–No, you________.
A. must B. won’t C. needn’t D. can’t
( ) 22.Anna hasn’ ( http: / / www.21cnjy.com )t come to school today. I think she ________ be ill.
A. can B. has to C. may D. should
( ) 23.If the ( http: / / www.21cnjy.com ) weather is very cold, you should___________ it at night.
A. covers B. be covered C. cover D. covered
( ) 24. --Shall we go skateboarding after school
--Sorry, my parents said that I ______ be at home early.
A. need B. must C. may
( ) 25. --It must be John who is in the office.
--I’m sure it ___ be John. I saw him off at the railway station just twenty minutes ago.
A. won’t B. mustn’t C. can’t D. needn’t
小结
1. 情态动词的提问和回答
课后练习
一、将下列句子改为一般疑问句，并按提示回答。
1. They can make a model plane.（肯定回答）
_____________________________________________________________________
2. You may use my books.（肯定回答）
_____________________________________________________________________
3. You must go home on time.（否定回答）
_____________________________________________________________________
4. Can she play ball games （肯定回答）
_____________________________________________________________________
5. You can swim in the swimming pool.（否定回答）
_____________________________________________________________________
6. She must go to school by bus．（肯定回答）
_____________________________________________________________________
课后记