Unit 4 Don‘t eat in class. Section A（Grammar Focus-3c）课件

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Section A(Grammar Focus—3c)
UNIT 4 Don't eat in class
学 习 目 标
1
2
能够熟练地运用祈使句、情态动词can、must及have to表达规章制度。 能通过观察并归纳总结出相应的语法知识项目。 能正确运用目标语言谈论和制定学校或家庭规则。
3
Do you know the rules for the school library
Don’t talk.
Don’t talk.
Revision
Do you know the rules for the school library
Don’t eat in the library.
Don’t sing in the library.
Do you know the rules for the school library
Don’t take pictures/photos in the library.
Do you know the rules for the school library
Don’t run in the hallways. Don’t fight.
What are the rules We must be on time for class.
Can we eat in the classroom No, we can’t, but we can eat in the dining hall.
Can we wear a hat in class Yes, we can./No, we can’t.
Does he have to wear a uniform at school Yes, he does./No, he doesn’t.
What do you have to do We have to be quiet in the library.
2. 祈使句的否定句怎么样构成的？肯定句呢？一般什么情况下使用祈使句？
1. 圈出的情态动词在用法上有什么共同点？
3. can在本单元主要表示什么含义？它还可以表达什么意思？
4. have to在句法上与其他情态动词的区别
Grammar
Focus
must与have to情态动词
1.must: 必须，主观必要，表示命令和愿望。
You must finish your homework.
2.have to 必需，必须，不得不… 客观需要
My mother is ill. I have to look after her.
不必 = don’t / doesn’t have to, needn’t
must not = mustn’t, 不能，千万不能
You don’t have to go there now.
You mustn’t break the law( 法律).
用have to或has to填空。
1.We ________ clean our classroom after school.
2.She _________ make her bed after getting up.
3.It’s late. Mr Beckman ______ go to work by car.
4.Emily and Peter join a music club. They _______ practice the guitar every day.
have to
have to
has to
has to
小试身手
一、祈使句
1. 用法：一般以动词原形开头，表示请求、命令、劝说、警告等。在祈使句中，通常省略句子主语第二人称you。
2. 句子结构
(1) 肯定句：__________+ 其他
在餐厅里吃东西。
________________________________
在音乐教室里听音乐。
________________________________
骑自行车去上学。
_________________________________
Ride the bike to school.
Eat in the dining hall.
动词原形
Listen to music in the music room.
(2) 否定句: _____ + _________+ 其他
不要和同学们打架。
_______________________________
不要在教室里打篮球。
________________________________
Don’t fight with your classmates.
Don’t play basketball in the classroom.
Don’t 动词原形
(3)以let引起的句子 ____+ sb.+动词原形
让我们步行去上学吧。
______________________
(4) No + 动词-ing形式。表示“禁止、规劝”
禁止停车！No Parking.
Let
Let’s walk to school.
3a Write the rules for the school library.
Library Rules
1. __________________________________
2. __________________________________
3. __________________________________
4. __________________________________
Don’t talk.
Don’t eat in the library.
Don’t listen to music in the library.
Don’t take pictures/photos in the library.
3b Use the words to make questions about
the rules. Then write answers according
to your school.
Be quiet
Q: ___________________________________ (she / have to / in the library)
A: ___________________________________
Eat
Q: ___________________________________
(he / have to / in the dining hall)
A: ___________________________________
Does she have to be quiet in the library
Yes, she does.
Does he have to eat in the dining hall
Yes, he does.
Listen to music
Q: ___________________________________ (we / can / in the hallways)
A: ___________________________________
Wear a hat
Q: ___________________________________
(we / can / in the classroom)
A: ___________________________________
Can we wear a hat in the classroom
No, we can’t.
Can we listen to music in the hallways
No, we can’t.
Task1: Make up five cool rules for your dream school. Share your rules with the class. Your classmates vote for the Coolest School!
1. We can eat in class.
2. We don’t have to come to school every day.
3. …
At my dream school, we don’t have to come to school every day. We …
Writing
3c
Task2: Suppose you are the headmaster in one school, and write school rules for the students.
Dear students,
In order to have a good environment (环境), we should have some rules in our school. Here are some suggestions. We hope that all of us can have a look at them.
1. Don’t sleep in class.
2. Clean the classroom every day.
3. __________________________
4. __________________________
5. __________________________
…
Yours
_______
SUMMARY
What have you learnt in this class
一、单项选择。
1. ____ listen to music in the classroom.
A. Not　　　　　B．No　　　　　C．Don't
2. Tom，please ____ the classroom now.
A. clean B．to clean C．cleans
3. Let's ____ on time for classes.
A. be B．be not C．are
4. She has to ____ her homework every night.
A. does B．do C．doing
5. Sorry，you ____ play basketball in the classroom.
A. can't B．don't C．don't have to
C
A
A
B
A
1. He has to eat breakfast quickly. (改为一般疑问句)
__________________________________
2. Play volleyball after class. (改为否定句)
________________________________
二、句型转换
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. (改为同义句)
_______________________________
5. Eric has to do his homework before six. (对划线部分提问)
___________________________________
Can we wear sports shoes in class
You must be on time for class.
What does Eric have to do before six
Homework
1. Review the sentence patterns in Grammar Focus.
2. Collect much more signs you see in your daily life and try to describe them in English.