Grammar and usage(1): Modal verbs: general introduction第二课时教学设计

Unit 2 Sports events Grammar and usage Modal verbs: general introduction & comparisons Teaching Aims: 1. Show Ss that modal verbs can be used to talk about ability, obligation, certainty or permission, to make requests, suggestions, offers and to give advice. 2. Enable students to understand that some modal verbs can be used with the continuous form and the perfect form to talk about current affairs or past actions. Teaching Important Points: 1. Develop the students’ ability of using modal verbs.

2. How to make students master the usage of modal verbs. Teaching Difficult Points: Develop the students’ ability of using modal verbs and how to make students master the usage of modal verbs. Teaching Methods: Explanation and exercise Teaching Procedures: Step 1 Warming up Say some sentences to warm up students: Now, many of us can speak English quite well, but a few years ago, we couldn’t. Yes or no? If we talk about the ability someone has, we use the modal verb ‘can’.

If we want to express that it is necessary for us to do something, what modal verb do we use?

must What other modal verbs can you think of? Step 3 Presentation

Show the usage of the modal verbs on the screen. Modal verbs

can/could表能力

(1) I don’t think he can solve the problem without any help. (2) Can you help me to work out this maths problem? ought to/should 1.表示义务，“应该”，用于各种人称

You should respect your parents. You shouldn’t spend much time surfing the Internet. 2.表示推测，“想必，估计”的意思。

If Tom starts today, he should complete the project in time. 3.表示与想象的不一样”照说应该……”

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I wonder where Mike is. He should be here now.

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You shouldn’t have told David what Mike told you.

4. 在表示建议, 命令, 要求动词后用虚拟

语气。

1) My friends suggested that I (should) pay visit to shanghai next month. 2) The chairman demanded that we (should) solve the problem at once. 5. 表示惊讶, 忧虑, 惋惜等感情色彩。

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I am really surprised that he should talk to his parents that way.

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Rose should turn him down.

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Rose ought to/will /must give me a hand whenever I am in trouble.

Have to/must have to 表客观需求

must

表主观愿望

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I have to finish the work before 7 o’clock.

We must make every effort to protect the Earth. You must work hard to achieve your life goal. Certainty might/may/could/should/ought to/will /must ●

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Rose might become upset at the news. Rose may be pretty busy now.

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Rose could cook meals for herself 2 years ago. ●John isn’t here to attend the party. H e must be reviewing his notes for the big exam tomorrow. Make requests 提出要求

Will; can; could; would A: Can/Will /Could/Would

you lend me some money? It happens that I don’t have any with me.

B: Yes, I can/will/can/will. Make suggestions 提出建议

Shall we/I /He/She/They turn in the project today? Shall常用于第一, 三人称, 表示征求对方意见

A: Shall he come in? B: Ok. Make offers

提出请求

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I’ll wash your sports jacket. ●

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Shall I get a ticket for you? Shall we carry the books for you? Shall I clean the blackboard for you? Give advice 给出建议

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You should not/ought not to speak to him like that. We should focus on our work. We should not laugh at those who are disabled. can/be able to can 的形式只有can; could两种

be able to 的形式有am/is/are able to; was/were able to; have/has been able to等多种

can 一般指一个人的能力

be able to 经过努力后而达到的一定程度

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My brother can play table tennis. My brother is able to dive under water for 10 minutes.

shall/ will shall表达诺言; will表示决心或决定

1) Take it easy. You shall be offered a job in this company. 2) Mike will spare no effort to study. mustn’t /needn’t

mustn’t “禁止, 不许” 语气强烈

needn’t “不需要, 没有必要” 语气较

为缓和

1) You mustn’t miss the speech to be delivered tomorrow. It’s of great importance.

2) You needn’t

do that if you don’t want to.

3) Must

we clean the classroom? Yes, you must. /No, you needn’t.

4) It is a five-minute walk from the station to my house. You

needn’t

have taken a taxi. (However, you did take a taxi.) Step 4 Have a try:

Choosing the right word

Answers:1. (Page 29)

(1)

must

(2) has to

(3)should

(4) must

(5)ought to

(6) should 2. (Page31) A

(1) can

(2) can/could

(3) may/might/ could

(4) mustn’t/shouldn’t/can’t

(5) mustn’t/shouldn’t/can’t

(6) can

(7) needn’t

B

(1) Shall

(2) shall

(3) Will

(4) will/shall (5)will /shall

(6) will

Step 5 Practice 1. —__ I water the trees on Tuesday?

—

No, you needn’t. A. Can

B. Must

C. May

D. Shall

2. He _____ not pay unless he is punished to pay.

A. shall

B. will

C. can

D. would

3. I _____ such a mistake again.

A. shall never make B. may never make C. can never do

D. need

4. —_____ I turn on the radio?

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

A. Shall

B. Must

C. Need

D. Do

5. Since the road is wet this morning, _____ last night.

A. it must rain

B. it must have rained

C. it must be rained

D. it must have been rained

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

A. can

B. may

C. should

D. had to

7. They _____ that far; but they stopped to have a snack on the way.

A. might be gone

B. needed go

C. could have gone

D. ought have gone

8. You _____ get down the bus until the bus has stopped.

A. can’t B. needn’t C. mustn’t D. don’t

Step 6

Homework 1. Read the book from Page 28 to Page 31. 2. Finish the exercises on Page 100 in WB. 3. Preview the Task Part.