人教版英语七年级下册 Unit 2 No Rules,No Order Section A Grammar Focus(3a-3d)课件

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Unit 2 No Rules, No Order
第三课时（语法课）
Grammar Focus
一、按要求写出正确的单词、词组或句子。
遵守规则 (短语) __________ 2. 秩序 (名词) ___________
3. 迟到(短语) __________ 4. 到达(动词) __________
5. 准时(短语) __________ 6. 穿校服 (短语) __________
7. 扔垃圾（动词）__________ 8. 对某人有礼貌（短语）___________
9. 尊重地对待每个人。 ___________________________
10. 在这里你不能穿这件夹克衫。 _______________________
11. 我不得不遵守规则。___________________
12. 最重要的是，我们一定要礼貌。
________________________________________
follow rules
order
late for
arrive
on time
wear a uniform
litter
be polite to sb
Treat everyone with respect.
You can’t weat the jacket here.
We have to follow the rules.
Most importantly, we must be polite.
上节要点回顾
Don’ t be late for school.
Don’ t run in the hallways.
Don’ t eat in the class.
Wear the school uniform.
Don’ t use your phone in class.
Don’ t litter.
Be polite and treat everyone with respect.
Put up your hand if you want to ask your teacher a question.
What rules do we follow
上学不要迟到。
不要在走廊跑。
不要在班里吃东西。
穿校服。
不要在课堂上使用手机。
不要乱扔垃圾。
礼貌待人，尊重他人。
如果你想问老师问题，举起你的手。
Read, translate and recite
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.
在走廊上走。
不要跑。
要有礼貌，互相尊重。
不要扔垃圾。/ 禁止扔垃圾。/ 不能乱扔垃圾。
我们可以带手机上课吗？
不，我们不能。我们必须把它们放在我们的储物柜里。
我们可以在课堂上吃零食吗？
不，我们不能在课堂上吃。我们得在食堂吃。
Presentation
Read and think
Wash your hands.
Be quiet, please.
Be polite to your friends.
Watch your head.
Keep off the grass.
No smoking.
Don’ t use your phone in class.
Don’ t talk in class.
Imperatives祈使句
动词原形开头，否定形式在动词原形前加don't.
无主语
为表示礼貌,可在句首/句末加上please. (句末时,please前通常加逗号)
命令(command)
请求(request)
劝告(advice)
禁止(prohibition)
警告(warning)
禁止(prohibition)
祈使句 (Imperative sentences)
一、含义
祈使句一般用来表示命令、请求、劝告、警告、禁止等。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。
二、主要类型
Walk in the hallway. Don’t run!
祈使句类型
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).
Be polite and treat one another with respect. Don’t be sad!
祈使句类型
2. Be型祈使句
肯定句：Be+表语(+其他).
否定句：Don’t+be+表语(+其他).
二、主要类型
Let her go. Don’t let her go.
Let her not go.
祈使句类型
3. Let型祈使句
肯定句：Let+宾语+动词原形(+其他).
否定句：Don’t+let+宾语+动词原形(+其他).
或Let +宾语+not+动词原形(+其他).
二、主要类型
No smoking ! 禁止抽烟! No phones! 禁止使用手机！
祈使句类型
4. No+ 动词-ing/ 名词! 多为公共场合的提示语。
二、主要类型
Imperatives(祈使句):
Summary
二、 “情态动词” 介绍规则：
1. 表允许、许可:
某人+ can + 动词原形 某人可以…
某人+must / have to + 动词原形 某人必须…
我们可以在餐厅吃东西。
我们必须按时到校。
We can eat in the dining hall.
We must/have to arrive at school on time.
can引导的疑问句
Yes, he can .
He can eat in the dinning hall.
（肯定回答）
（否定回答）
No, can’t
（否定句）
He can’t eat in the dinning hall.
（一般疑问句）
Can he eat in the dinning hall
区别：have to与must (情态动词)
1) have to意为“必须”强调“客观需要”
They have to wear school uniforms every day.
2) must 意为“必须”强调主观上的愿望
It’s late. I must go home now.
练一练：用have to, must 填空
It’s cold outside. We ______ stay at home.
2. I think we ____ be good with our parents.
have to
must
must句型转换
have to 句型转换
翻译：他必须回家。
He must go home.
He mustn’t go home.
Must he go home
Yes, he must.
No, he needn’t或
he don’t have to.
否：
疑：
翻译：他必须穿校服。
He has to wear the uniform.
Does he have to wear the uniform
He doesn’t have to wear the uniform.
Yes, he does.
No, he doesn’t.
1. Don’t jump the queue. You ______________ wait 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.
Complete the sentences using can, have to / must, or can’t / mustn’t.
have to / must
can
have to / must
have to
can’t
3b
jump the queue 插队
wait your turn 等待你的顺序
feed on 以...为食
leave A 离开A
leave A for B离开A去B
be absent from 缺席
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
quietly 安静地
put on the seat belt 系上安全带
Look at the first sign and read the rules. Then write the rules for the other signs.
Do not eat or drink.
No eating or drinking.
You can’t / mustn’t eat or drink.
3c
Do not park here.
No parking.
You can’t / mustn’t park here.
Do not take photos here.
No photos.
You can’t / mustn’t take photos.
park
take photos
Do not swim here.
No swimming.
You can’t / mustn’t swim here.
Do not feed birds.
No feeding.
You can’t / mustn’t feed birds.
swim
feed birds
Do not swim here.
No swimming.
You can’t / mustn’t swim here.
In groups, brainstorm three rules for one of the places below. Then draw signs to show the rules. Share your signs in class and explain what they mean.
In the library, we must keep quiet. We mustn’t make noise. We can’t...
library school dining hall park cinema hospital
3d
自我检测
按要求写出正确的单词、词组或句子。
插队(短语) __________ 2. 喂养 (动词) ___________
3. 离开(动词) __________ 4. 缺席(短语) __________
5. 轻声地(副词) __________ 6. 座椅安全带 (短语) __________
7. 制造噪音（短语）__________ 8. 电影院（名词）___________
9. 在走廊里步行。 ___________________________
10. 我们能把手机带到学校吗？ _______________________
11. 我们不得不在餐厅吃东西。___________________
12. 你能戴上座椅安全带吗？ ________________________________________
jump the queue
feed
leave
be absent from
quietly
seat belt
make noise
cinema
Walk in the hallway.
Can we bring the phones to class
We have to eat in the dinning hall.
Can you put on your seat belt
用所给单词的适当形式填空
______ (not be) late for class.
You must ______ (wear) your school uniform on Monday.
Can you ______ (bring) your book to me
We have to ______ (clean) the classroom after school.
Let him ______ (go) home first.
Don't be
wear
bring
clean
go
自我检测
1. — Max, ______be afraid of speaking in front of people. You
are the best!
— OK, I won’t.
A. doesn’t B. not C. isn’t D. don’t
2. — _______ I take photos here
— Sorry, you can’t.
A. Must B. Need C. Can D. Will
3. Look! The sign on the wall says, “No _______!”
A. smoke B. to smoke C. smoked D. smoking
D
单项选择
C
D
自我检测
1．— Must we sing a song at the party
— No, you ________.
A．mustn’t B．haven’t to C．not have to D．don’t have to
2．It’s snowing. Please ________ warm clothes.
A．wear B．wears C．wearing D．to wear
3．________ in bed. It’s bad for your eyes.
A．Not to read B．Don’t to read C．Don’t read D．Not read
4．It’s 7:15. Let’s ________ to school.
A．to go B．going C．go D.gone
D
A
C
C
自我检测
句型转换
1. He has to eat breakfast quickly. (改为一般疑问句)
__________________________________
2. Play volleyball after class. (改为否定句)
________________________________
Does he have to eat breakfast quickly
Don’t play volleyball after class.
3. We can wear sports shoes in class. (改为一般疑问) ______________________________
4. Don’t arrive late for class. (用on time改为同义句)
_______________________________
5. Eric has to do his homework before six. (划线部分提问)
___________________________________
Can we wear sports shoes in class
You must be on time for class.
What does Eric have to do before six
1. They can play the violin and the drums. （对画线部分提问）
________ __________ they _________
2. You can go swimming with us this afternoon.（改为一般疑问句）
_______ you _______ swimming with us this afternoon
3. —Must I keep the window open all day （作否定回答）
—No, you ___________________.
Can
What
can
根据要求完成句子
do
go
needn’t / don’t have to
自我检测
Check
在走廊上走。 不要跑！
要有礼貌。互相尊重。 不要扔垃圾。/禁止扔垃圾。/不能扔垃圾。
我们能带手机上课吗？ 不，我们不能。我们必须把它们放在储物柜里。
我们能在课上吃零食吗？ 不，我们不能在课上吃。我们必须在食堂吃。
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.