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(共22张PPT)
Grammar Focus+3a-3d
Section A What rules do we follow
Unit 2 No Rules, No Order
Objectives
通过本节课学习，我能够：
1.掌握祈使句的肯定和否定形式，理解并正确使用情态动词must和have to。
2.能够在实际情境中运用祈使句和情态动词表达规则和建议。
3.引导学生认识到规则的重要性，培养遵守规则的意识。
School Rules
Walk in the hallway.
Don’t run!
Don’t litter!
You mustn’t / can’t litter!
School Rules
Be polite and treat one another with respect.
3a Read the sentences. Do the verbs in bold need to change
forms Why
Walk in the hallway. Don’t run!
Be polite and treat one another with respect. Don’t litter. / You mustn’t litter. / You can’t litter.
Can we bring our phones to class No,we can’t. We must keep them in our lockers.
Can we eat snacks in class No,we can’t eat in class. We have to eat in the dining hall.
Imperative Sentences
Walk in the hallway.
Be polite and treat one another with respect.
Don’t run!
Don’t litter.
祈使句
Imperative Sentences
祈使句
Grammar Focus
祈使句 (Imperative sentences)
一、含义
祈使句一般用来表示请求、命令、劝说、号召、警告等。在祈使句中，通常省略主语you，其肯定形式常以动词原形开头，否定形式是在动词原形前加don’t。祈使句句尾用句号或感叹号，读时用降调。为表示礼貌，可以在句首或句末加上please。句末用please时，前面通常加逗号。
Presentation
二、主要类型
Grammar Focus
1. Do型祈使句
肯定句：实义动词原形(+宾语)(+其他).
否定句：Don’t +实义动词原形(+宾语)(+其他).
Remember to smile all the time. 记得要一直微笑。
Don’t smoke here ! 不要在这里抽烟!
Presentation
二、主要类型
Grammar Focus
2. Be型祈使句
肯定句：Be+形容词(+其他).
否定句：Don’t+be+表语(+其他).
Be careful! 小心点！
Don’t be nervous! 不要紧张！
Presentation
三、情态动词have to和must的用法
Grammar Focus
have to ①常强调客观需要,多译为“不得不”；
②有时态、人称和数的变化，其一般现在时的第三人称单数形式为has to，过去式为had to。have to的否定形式为don’t have to，表示“不必”。
must ①常表示说话人的主观看法，多译为“必须”；
②没有时态、人称和数的变化。must的否定形式为mustn’t，表示“禁止，不准”。
Presentation
1. Don’t jump the queue. You ___________ wait for your turn.
2. I _____ feed my dog many kinds of food, but I ____
give him chocolate. It is bad for him!
3. A: Can I leave the classroom if I don’t feel well
B: Yes, but you ___________ tell your teacher about
it when you ______ be absent from class.
3b Complete the sentences using can, have to / must, or
can’t / mustn’t.
have to / must
can
have to / must
have to
can’t
Practice
3b Complete the sentences using can, have to / must, or
can’t / mustn’t.
4. A: Hey! Can I look at your book
B: Shh, we ___________ talk quietly in the library.
5. A: Can you put on your seat belt We ___________
wear one when we’re in a car.
B: Sure. Thanks!
have to/must
have to/must
Practice
3c
Work in groups of 6:
Students: talk about the sign
Student 1-2: write the rules for the signs
Student 3-4: design rules report
Student 5-6: show the rules report
Evaluation:
Use correct language.(使用正确语言)
Speak loudly and clearly with feelings.
(言语饱含热情，大声且清晰)
With body language.（有肢体语言和感情）
Without book.(脱离课本)
Look at the first sign and read the rules.
Then write the rules for the other signs.
Production
3c Look at the first sign and read the rules. Then write
the rules for the other signs.
Production
Do not eat or drink.
No eating or drinking.
You can’t / mustn’t eat or drink.
Show Time
Role play.
Checklist Items Stars
1. Use correct language.(使用正确语言)
2. Speak loudly and clearly with feelings. (言语饱含热情，大声且清晰)
3. With body language.（有肢体语言和感情）
4.Without book.(脱离课本)
Look at the first sign and read the rules. Then write the rules for the other signs.
3c
Don’t park.
No parking.
You can’t / mustn’t park.
Don’t take photos.
No photos.
You can’t / mustn’t take photos.
Look at the first sign and read the rules. Then write the rules for the other signs.
3c
Don’t swim.
No swimming.
You can’t / mustn’t swim.
Don’t feed the birds.
No feeding.
You can’t / mustn’t feed the birds.
In groups, brainstorm three rules for one of the places below.
3d
library school dining hall park cinema hospital
In the library, we must keep quiet.
We mustn’t make noise.
We can’t bring food to the library.
We can’t talk loudly in the library.
We have to return the books on time.
…
Summary
Grammar
1. 祈使句的表达
2. 情态动词的用法
Key words
turn, leave, absent, quietly
Expressions
jump the queue, wait for
1. Let me _____ (tell) you about my family.
2. ___________ (not listen) to music in class.
3. Do you have to ______ (wear) school uniforms every day
4. You can’t eat in the classroom. You can _____ (eat) in the dining hall.
5. You must _____ (be) quiet in the library.
6. No ___________ (swim) in the river! It is too dangerous.
7. Boys and girls, please _____ (keep) the classroom tidy in school.
8. Everybody ________ (must, may) follow the traffic rules.
语法填空。
tell
Don’t listen
wear
eat
be
swimming
keep
must
1. Memorize the new words and phrases.
2. Talk about the rules with your partners by using modal verbs and imperative sentences.
3. Finish the exercises.
Homework

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