Grammar and usage(1): Modal verbs: general introduction教案设计

Module 4 Unit2 Grammar and Usage

学案

Ⅰ. Teaching aims: 1.

Help students learn the basic features of modal verbs

2.

Help students use modal verbs to write and speak correctly Ⅱ.Teaching important and difficult points: 1. Help students master the basic features and functions of modal verbs

2. Help students use modal verbs to write and speak correctly Ⅲ.Teaching procedures: Step1:Lead-in：Free talk Step2: Modal Verbs in daily life:

asks students to describe the pictures using modal verbs, and then conclude the usage of each modal verb.

Summary 1:

A.

In these sentences can means be able to

(could is the past tense of can.) B.

Can and be able to are the same in meaning. But can is only used in present and past tense and be able to can be used in different tenses. C.

Can is used to ask or give permission. Could is not the past tense of can here but a more polite way of asking or giving permission. D.

Can is used to ask whether something is true or not, and can’t means that something is impossible or unlikely. Summary2: may/might的用法

A.

If you are not very sure about something and you want to have a guess, you can use may and might to express certainty and permission. sometimes it can express wish Summary 3 Must 的用法

1.You must show your student card before entering this reading room.

2.You must keep quiet in it

(obligation)

1.It must be a reading-room 2. He must be late again, because nobody is there.

(certainty) We were ready to have a holiday, but my baby must fall ill.

偏偏

Summary 4

Shall & should 的用法

1.shall we/ he wait outside?

征求意见

2.You shall get a bike on your birthday.

允诺

3.Everyone shall get to school before 7 am.

命令

4.One of rules is that every student shall wear school uniforms at school.

规定

5.If you are the last to leave, you should offer to help with the tidy-up work.

应该

6.You should bring a dog into the classroom.

竟然

Summary 5情态动词的否定式含义

1.You shouldn’t park here; the street is narrow. 不可以

2.Today is Sunday. You needn’t go to school.

没必要

3.He may not come tonight, but I am not sure.

可能不

4.The old man can’t be her grandpa, because her grandpa died in an earthquake.

不可能

5.You mustn’t play football in the street, because it is quite dangerous.

禁止

6.I tried many times, but the door won’t open.

就是不

ExerciseⅠ

1. Mary ____ (mustn't, can't )be in Paris，for I saw her in the town only a few minutes ago．

2.—May I pick a flower in the garden?

—No, you____

( needn’t, mustn’t)

3. Now, many of us ____

(can, could) speak English quite well, but a few years ago, we couldn’t. Yes or no?

4. You ____

(shouldn’t, can’t) spend much time surfing the Internet.

5. Everything has two sides. Beautiful songs ____(may, should) be noisy to others . 6. —_____ I turn on the radio?

You’d better not. It is noisy enough in this room.

A. Shall

B. Must

C. Need

D. Do 7. ____ I water the trees on Tuesday?

---No, you needn’t. A. Can

B. Must

C. May

D. Shall 8. Since the road is wet this morning, _____ last night.

A. it must rainB. it must have rained C. it must be rained

D. it must have been rained

9. Everyone _____ do his best to make the world safe and clean.

A. can

B. may

C. should

D. had to 10. ________I have a word with you? It won't take long. [2014·北京卷] A．Can

B．Must

C．Shall

D．Should 11. Although you ________ find bargains in London, it's not generally a cheap place to shop.

A. should

B. need

C. must

D. can

[2014·全国大纲卷]

12.—I've prepared all kinds of food for the picnic. —Do you mean we ________ bring anything with us?

[2014·湖南卷]

A. can't

B. mustn't

C. shan't

D. needn't 13. It was sad to me that they, so poor themselves, ________ bring me food. A．might

B．would

C．should

D．could

[2014·江苏卷] 14. Life is unpredictable; even the poorest ________ become the richest. A. shall

B.

must

C. need

D. might

[2014·江西卷] 15. It ______ be the vocabulary that caused you the problem in the exercise because you know a lot of words. (2013年高考英语安徽卷) A. may

B. couldn’t

C. should

D. needn’t

ExerciseⅡ

Dear Sarah,

I’ve just heard of the milk powder incident. Melamine is said to be contained. ___

it be true? Young mothers ____

be very worried. Why was melamine added? To make milk delicious? Milk is delicious in itself. They _______ have done this. Moreover, it _____ have been found much earlier. Nothing harmful can reach consumers. I’m sure now the milk powder ____

have been pulled off shelves. I was told some of the milk powder ___

have made its way to the US. Would you be kind enough to make a list of the banned milk powder? Many thanks. Yours

Dais Step3

Let’s enjoy a little poem

Step4

Homework