21世纪教育网 –中小学教育资源及组卷应用平台
Unit 4 Don’t eat in class. 教案
Period 2 (Section A Grammar and 3a–3c)
Teaching aims （教学目标）
1. 能使用目标语言谈论学校、图书馆的规则。
2. 能用所学内容解决实际问题。
3. 熟练掌握have to 的用法。
Language points (语言点)
1. 词汇：
1)名词n. uniform
2)动词v. bring
3) 形容词 adj. important, quiet
2. 句型：
Can we eat in the classroom
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.
Difficulties （教学难点）
1. 巩固祈使句的应用。
2. 学习have to 的用法。
Teaching steps （教学步骤）
Step 1.Warm-up and revision (课堂热身和复习)
说唱下列歌谣：
Be polite to each other.
Wear school uniform.
Don’t be late for school. 21cnjy.com
Don’t say rude remarks in school.
Don’t eat snacks in class.
Don’t shout in class.21·cn·jy·com
Be polite to each other.
Wear school uniform.
Don’t be late for school. 【来源：21·世纪·教育·网】
Don’t say rude remarks in school.
Don’t eat snacks in class.
Don’t shout in class.2·1·c·n·j·y
Read the school rules.
Step 2. Grammar Focus
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。21*cnjy*com
2. 句子结构
(1) 肯定句：动词原形 + 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。_____________________
(2) 否定句: Don’t + 动词原形+ 其他
不要和同学们打架。_______________________________
不要在教室里打篮球 ________________________________
(3)以let引起的句子 Let + 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.
禁止吸烟！No Smoking.
把下列祈使句改成否定句:
1. Sit down. -------Don’t sit down.
2. Come in. -------Don’t come in.
3. Eat at home. ------Don’t eat at home.
4. Listen to music outside. ------Don’t listen to music outside.21教育网
5. Do your homework at school. -------Don’t do your homework at school.
情态动词can的用法
1.表示能力（如体力和脑力方面），意为
“能；会”等。例如：
Can you speak English 你会讲英语吗？
2. 表示请求或允许，多用在口语中，意为“可以；能”等。例如：
Can I help you 我能帮助你吗？
用于否定句表示不允许。例如：
You can’t play basketball. 你不能玩篮球。
3.用于疑问句中用来提出要求。例如：
Can you...？“请你……好吗？”表示说话人的请求。
Can I...？“我可以……吗？”用来征求对方是否允许自己做某事。如在句末加上please一词就显得更有礼貌了。例如： 21·世纪*教育网
Can you help me, please 请你帮助我好吗？
4.表示可能。例如：
He can be at home now. 他现在可能在家。
The moon can’t always be full. 月亮不可能常圆。
5.表示怀疑。在表达此意时，只能用于一般疑问句中，带有感彩。例如：
Can it be true 那会是真的吗？
根据句意，用can和can’t填空。
1. Mr Green_______ smoke here because there’s a sign on the wall. It says “No smoking.”【版权所有：21教育】
2. It’s very hot outside. You______ wear a hat.
3. We _______ eat in the classroom because it’s impolite to teachers.
4. I ______ go to bed after 11:00 on school night.www.21-cn-jy.com
5. The students _____ read books and magazines in the library.21教育名师原创作品
have to与一般情态动词的异同
相同点：
一般的情态动词不能单独作谓语，后面必须接动词原形一起构成谓语，have to
也是这样。
不同点：
1、一般的情态动词没有人称和数的变化，而 且所用的时态也受到一定的限制，而have to 有人称和数的变化。可用于多种时态中：一般现在时中当主语是第三人称单数时要用has to，其余的人称用have to，一般过去时中要用had to。如： 【出处：21教育名师】
She has to go to school by bus. 她不得不乘公汽上学。
2、否定句和疑问句的构成方式不同：
①一般的情态动词直接在后面加not构成否定句,把这些情态动词提到句首就构成一般疑问句。
②而have to 的否定句和疑问句的构成往往要借助于助动词do的适当形式或助动词will即have to, has to, had to的否定式分别为don't have to, doesn’t have to, didn’t have to，疑问句是在句首加助动词do的相应形式,句中还原成have to。
What does she have to do 她必须做什么？
You didn’t have to wait for me yesterday. 昨天你没有必要等我。
用have to或has to填空。
1. We ________ clean our classroom after school.
2. She _________ make her bed after getting up. 21*cnjy*com
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.
根据句意，用can, can’t, has to, have to填空。
Mr. Green ____________smoke here, because there’s a sign on the wall. It says “No
smoking.”
2. It’s very hot outside. You ____________wear a hat.
3. We _____________eat in the classroom, because it’s impolite to teachers.
4. I __________go to bed after 11:00 on school night.
5. The students___________ read books and magazines in the library.
6. We________ clean our classroom after school.
7. She_______ make her bed after getting up.
8. It’s late. Mr. Beckman________ go to work by car.
9. Emily and Peter join a music club. They_________ practice guitar every day.
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)
________________________________
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)2-1-c-n-j-y
___________________________________
Step 3. Work on 3a （完成3a）
(1) Write the rules for the school library.
(2) Check the answers.
(3) Show some other rules.
Don’t park here. Don’t turn left. Don’t use mobile phones. Don’t smoke.
No talking!
“No + 名词 / V-ing形式”表示“禁止或不许做某事”。此类句型常用于一些警示语中，相当于一个否定祈使句。如：【来源：21cnj*y.co*m】
No photos! 禁止拍照！
No smoking! 禁止吸烟！
Step 4. Work on 3b （完成3b）
(1) Use the words to make questions about the rules. Then write answers according to your school.
(2) Have Ss check their answers in groups and then report their answers to the class.
方法指导
1. 根据例句，可知要求我们造一般疑问句并根据实际情况进行回答。
2. 先确定句子的主语。
3. 再确定用情态动词还是用助动词来构成疑问语序。
4. 根据实际情况做出肯定或否定回答，答语的主语要与问句保持一致。
Step 6. Work on 3c （完成3c）
Make up five cool rules for your dream school. Share your rules with the class. Your classmates vote for the Coolest School!
At my dream school, we don’t have to come to school every day. …
We can eat in class. …
We don’t have to wear school uniforms. …
We can listen to music in class. …
We can eat in the classroom. …
We don’t have to do homework. …
At my dream school, we don’t have to come to school every day. We can eat in the classroom.21世纪教育网版权所有
We can listen to music in class.
We don’t have to do homework.
We don’t have to wear school uniforms at school.
Step 7. Exercises:
1.You must not break the _______ (规则).
2. We can’t make too much noise in the _________ (走廊).www-2-1-cnjy-com
3.We have to wear ____________ (运动鞋) for gym class.
4. He _______ (步行) two kilometers to work every morning.
5. She has to ______ (洗) the dishes after meals.
Step 8. Homework （课后作业）
1. Remember the sentences in the Grammar Focus.
2. Write five rules in your family.
21世纪教育网 www.21cnjy.com 精品试卷·第 2 页 （共 2 页）
HYPERLINK "http://www.21cnjy.com/" 版权所有@21世纪教育网(www.21cnjy.com)(共50张PPT)
Unit 4 Don’t eat in class.
Period 2 (Section A Grammar-3c)
。
新目标版 （Go for it） 七年级下
21世纪教育网（www.21cnjy.com)中小学教育资源及组卷应用平台
教学目标
导入新课
Lead in
Be polite to each other.
Wear school uniform.
Don’t be late for school.
Don’t say rude remarks in school.
Don’t eat snacks in class.
Don’t shout in class.
说唱下列歌谣：
Be polite to each other.
Wear school uniform.
Don’t be late for school.
Don’t say rude remarks in school.
Don’t eat snacks in class.
Don’t shout in class.
Read the school rules.
教学目标
新课讲解
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。
_____________________
动词原形
Eat in the dining hall.
Listen to music in the music room.
Ride the bike to school.
(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
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.
禁止吸烟！No Smoking.
Let
Let’s walk to school.
1. Sit down.
2. Come in.
3. Eat at home.
4. Listen to music outside.
5. Do your homework at school.
Don’t sit down.
Don’t come in.
Don’t eat at home.
把下列祈使句改成否定句
Don’t listen to music outside.
Don’t do your homework at school.
拓展
情态动词can的用法
表示能力（如体力和脑力方面），意为
“能；会”等。例如：
Can you speak English 你会讲英语吗？
2. 表示请求或允许，多用在口语中，意为“可以；能”等。例如：
Can I help you 我能帮助你吗？
用于否定句表示不允许。例如：
You can’t play basketball.
你不能玩篮球。
拓展
情态动词can的用法
用于疑问句中用来提出要求。例如：
Can you...？“请你……好吗？”表示说话人的请求。
Can I...？“我可以……吗？”用来征求对方是否允许自己做某事。如在句末加上please一词就显得更有礼貌了。例如：
Can you help me, please
请你帮助我好吗？
拓展
情态动词can的用法
3. 表示可能。例如：
He can be at home now.
他现在可能在家。
The moon can’t always be full.
月亮不可能常圆。
4. 表示怀疑。在表达此意时，只能用于一般
疑问句中，带有感彩。例如：
Can it be true
那会是真的吗？
--Can we…..
--Yes,we can./No,we can’t.
draw on the wall
pick flowers
walk on the grass
play basketball
play games
play Pingpong
根据句意，用can和can’t填空。
1. Mr Green_______ smoke here because there’s a sign on the wall. It says “No smoking.”
2. It’s very hot outside. You______ wear a hat.
3. We _______ eat in the classroom because it’s impolite to teachers.
4. I ______ go to bed after 11:00 on school night.
5. The students _____ read books and magazines in the library.
can’t
can
can’t
can
can’t
拓展
have to与一般情态动词的异同
相同点：
一般的情态动词不能单独
作谓语，后面必须接动词
原形一起构成谓语，have to
也是这样。
拓展
have to与一般情态动词的异同
不同点：
1、一般的情态动词没有人称和数的变化，而
且所用的时态也受到一定的限制，而have
to 有人称和数的变化。可用于多种时态中：
一般现在时中当主语是第三人称单数时要用has to，其余的人称用have to，一般过去时中要用had to。如：
She has to go to school by bus.
她不得不乘公汽上学。
拓展
2、否定句和疑问句的构成方式不同：
①一般的情态动词直接在后面加not构成否定句，
把这些情态动词提到句首就构成一般疑问句。
②而have to 的否定句和疑问句的构成往往要借助
于助动词do的适当形式或助动词will即have to,
has to, had to的否定式分别为don't have to,
doesn’t have to, didn’t have to，疑问句是在句
首加助动词do的相应形式,句中还原成have to。
What does she have to do 她必须做什么？
You didn’t have to wait for me yesterday.
昨天你没有必要等我。
have to与一般情态动词的异同
We have to ….
clean the
blackboard
clean the
classroom
tidy the teacher’s desk
clean the window
get off the bike at the school gate
put the bikes in lines
Yes, we do.
Do you have to wear a uniform at school
We have to wear
a uniform at school.
No, we don’t.
We don’t have to wear
a hat at school.
Do you have to wear a hat at school
Do you have to wear your
school card on weekends
Yes, we do .
We have to wear my
school card on weekends.
Yes, we do.
Do you have to wear sports shoes for gym class
We have to wear sports shoes
for gym class.
Do you have to wear shorts for gym class
No, we don’t.
We don’t have to
wear shorts for
gym class.
Yes, we do.
Do you have to listen
carefully in class
We have to listen
carefully in class.
Do you have to clean the classroom on vacation
No, we don’t.
We don’t have to clean the classroom on vacation.
Do you have to clean
the classroom
Yes, we do.
We have to clean
the classroom.
Yes, we do.
Do you have to do homework after class
We have to do homework after class.
Do you have to do some reading every day
Yes, we do.
We have to do some reading every day.
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
1.Mr Green smoke here, because there’s
a sign on the wall. It says “No smoking.”
2.It’s very hot outside. You wear a hat.
3.We eat in the classroom, because
it’s impolite to teachers.
4.I go to bed after 11:00 on school night.
5.The students read books and magazines
in the library.
can’t
can
can
can
can’t
根据句意，用can, can’t, has to, have to填空。
6.We________ clean our classroom after
school.
7. She_______ make her bed after getting up.
8. It’s late. Mr. Beckman________ go to
work by car.
9. Emily and Peter join a music club. They
_________ practice guitar every day.
have to
have to
has to
has to
用have to或has to填空。
1. He has to eat breakfast quickly. (改为一般疑问句)
__________________________________
2. Play volleyball after class. (改为否定句)
________________________________
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
We must be on time for class.
What does Eric have to do before six
No talking!
Can we talk in the library
We can’t talk in the library.
Don’t talk!
We must keep quiet in the library.
No school bags!
You can’t bring your school bags in the library.
Don’t bring your school bags.
We can’t bring umbrellas.
Don’t bring your umbrellas.
No umbrellas!
No food!
Don’t eat food .
You can’t eat in the library.
You can’t listen to music.
Don’t listen to music.
No listening to music!
No talking!
“No + 名词 / V-ing形式”表示“禁止或不许做某事”。此类句型常用于一些警示语中，相当于一个否定祈使句。如：
No photos! 禁止拍照！
No smoking! 禁止吸烟！
Explanation
Write the rules for the school library.
Library Rules
1.
2.
3.
4.
Don’t talk.
Don’t eat.
Don’t listen to music.
Don’t take photos.
方法指导：
1. 由图示可知都是一些禁止类的祈使句。
2. 可知应用“Don’t + 动词原形”句子。
3a
Use the words to make questions about the rules. Then write answers according to your school.
3b
方法指导
1. 根据例句，可知要求我们造一般疑问句并根据实际情况进行回答。
2. 先确定句子的主语。
3. 再确定用情态动词还是用助动词来构成疑问语序。
4. 根据实际情况做出肯定或否定回答，答语的主语要与问句保持一致。
Does she have to be quiet in the library
Yes, she does.
Does he have to eat in the dining hall
Yes, he does.
Can we wear a hat in the classroom
No, we can’t.
Can we listen to music in the hallways
No, we can’t.
At my dream school, we don’t have to come to school every day. …
We can eat in class. …
We don’t have to wear school uniforms. …
We can listen to music in class. …
We can eat in the classroom. …
We don’t have to do homework. …
At my dream school, we don’t have to come to school every day. We can eat in the classroom.
We can listen to music in class.
We don’t have to do homework.
We don’t have to wear school uniforms at school.
Report
Great! Jim’s school is the coolest.
We must be quiet in the computer room.
Don’t run in the computer room.
Don’t eat or drink in the computer room.
Wear slippers in the computer room.
Report
Computer Rules
___________________________________
___________________________________
___________________________________
___________________________________
___________________________________
We must be quiet in the computer room.
Don’t eat or drink in the computer room.
Don’t run in the computer room.
Wear slippers in the computer room.
Clean the computer room every day.
教学目标
巩固提升
1.You must not break the _______ (规则).
2.We can’t make too much noise in the
_________ (走廊).
3.We have to wear ____________ (运动鞋)
for gym class.
4. He _______ (步行) two kilometers to work
every morning.
5. She has to ______ (洗) the dishes after meals.
rules
hallways
sports shoes
walks
wash
词汇
教学目标
课外作业
1. Remember the sentences in the
Grammar Focus.
2. Write five rules in your family.
谢 谢！
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Unit 4 Don't eat in class. 学案
Period 2 Section A (Grammar 3c)
1．情态动词can，can't 和have to 的用法
2、学习掌握本节课的生词和短语；
3、巩固祈使句的用法
1.祈使句 2．情态动词can，can't 和have to 的用法
祈使句 2．情态动词can，can't 和have to 的用法
【学习步骤】
Step 1:【自主预习】
一、预习交流：
1． 根据Grammar Focus, 归纳Section A部分语法重点；
2． 勾画出重点和疑惑。
二、翻译官
1. be on time for class________________ 2. in class____________________
3. wear a uniform ___________________ 4. 梦想的学校____________
5. 不必___________________________
三.英汉互译
1. eat outside ________ 2. wear a hat ________ 3. a lot of _____________ 4.be late for class___________5.in class___________ 6. wear a uniform __________ 21世纪教育网版权所有
7. 梦想的学校____________ 8. 不必____________
9. 不得不 ____________ 10. 穿校服_____________________
11. 保持安静 ________________
四. 自学课文，勾画出重点和疑惑。3.
五．根据Grammar Focus, 归纳Section A部分语法重点；
Step 2【课堂导学】
1 Review
Review the new words in Section A.
2 Presentation
Read the sentences in Grammar Focus and try to remember them by heart.【来源：21cnj*y.co*m】
3 Practice
(1) Check the answers in 3a. Read the sentences.
(2) Check the answers in 3b. Read the sentences.
4 Consolidation
Make up five cool rules for a dream school. Vote for the Coolest School.【出处：21教育名师】
Step 3:【教师点拨】：
1. We have to be quiet in the library.
1) 情态动词have to意为“不得不”，后接动词原形。
2) have to有人称、数和时态的变化。在一般现在时中，如果主语是第三人称单数，用has to。在一般过去时中用had to。【来源：21·世纪·教育·网】
3) have to 在一般现在时或一般过去时中的否定形式及构成疑问句时要借助于助动词do或其适当形式。【版权所有：21教育】
4) have to强调客观上“不得不”做某事；must指主观上“必须”做某事。强调主观上认为有义务、有必要做某事。变一般疑问句时，直接把must提到句首。21教育名师原创作品
Step 4:【课堂检测】
一．单项选择
( ) 1. —What are the school rules —We _______ listen to music in class.
A. don’t B. can’t C. aren’t 21*cnjy*com
( ) 2. Don’t________ class.
A. be late B. late for C. be late for
( ) 3. There are ________ rules in our school.
A. a lots of B. a lot of C. lot of
（ ）4. He can’t meet his friends tonight because he _______ do homework.
A. has to B. have to C don’t have to
（ ）5. It’s very warm. You ______ wear the coat.
A. must B. don’t have to C. have to
（ ）6. I have to _______ the room every morning.
A. clean B. cleans C. cleaning
（ ）7. Does she have to go to bed at 9:00 Yes, she__________.
A. has B. have C. does
（ ）8. Don’t listen ______music in the classroom ______ hallways.
A. to; and B. to; or C. at; or
（ ）9. She lost her bike. She _______ walk to school.
A. have to B. has to C. has
（ ）10. We ________to wear the school uniform every day.
A. not have B. have not C. don’t have
（ ）11.-Why are you walking so fast Because I get home to do my work.
A. have B. have to C. has to
（ ）12. You______ go in a hurry(匆忙).There’s enough time left.
A. have to B. don’t have to C. mustn’t
（ ）3.We _____be on time.
A. must B. can’t Can
（ ）14.----Can you cook dinner It’s easy. 2-1-c-n-j-y21教育网
A. No, I can’t B. Yes, I can C. No, I canwww.21-cn-jy.com
（ ）15.You_____play basketball in the classroom。
A．have to B. mustn’t C. can’t
二、完形填空
Many students like 1 very much. But 2 Monday to Friday，they must go to school. So on Saturday and Sunday they 3 at home and watch TV from morning to night. They don’t know it’s bad for their eyes. Usually children like to eat fish，meat and chicken. don’t like vegetables 4 fruit. They don’t know 5 more vegetables and fruit is 6 than eating meat.www-2-1-cnjy-com
At school the children only do a few minutes of sport or 7 do any sport. The teachers must know it isn’t good for 8 health.
We always think of ways to keep 9 We must eat 10 vegetables and fruit，do enough (足够的) sport every day. And we should watch TV and read in right ways.
( ) 1. A. watch TV B. watch the TV
C. watching TV D. watching the TV
( ) 2. A. on B. and C. from D. to
( ) 3.A. stay B. live C. sit D. leave
( ) 4.A. and B. with C. or D. but
( ) 5.A. buying B. eating C. getting D. keeping
( ) 6.A. good B. better C. bad D. worse
( ) 7.A. often B. sometimes C. usually D. never
( ) 8.A. them B. they C. their D. theirs
( ) 9.A. health B. healthy C. busy D. free
( ) 10. A. more B. much C. a lot D. many
三、按要求改写句子
1. We can wear hats in school. (改为否定句)
________________________________________.
2. No food in class. (改为同义句)
________________________________________.
3. I have to do my homework after school. (对划线部分提问)21·cn·jy·com
___________________________________________
4. She has to be in bed by ten (对划线部分提问)
_______________________________________________
5. Do your homework at school. (改为否定句)
_________________________________________________.21*cnjy*com
四、根据汉语意思，完成句子，每空一词。
1. 你们在图书馆必须保持安静吗？
Do you _______ ______ _______ _______ in the library
2. 不要把脏衣服留在卧室里！
_________ _______ the _______ clothes in the bedroom!
3. 我妈妈说做完作业以前不能看电视。
My mom says I ________ watch TV _______ I finish my homework.2·1·c·n·j·y
4. 周末她得帮妈妈干家务。
______ weekends, she ________ help her mum _______ some housework.
5.上课不能迟到，也不能打架。
_________ arrive ________ ________ class or _________ in class.2-1-c-n-j-y
6.在周末，我不得不打扫自己的房间和清洗餐具。
On weekends, I _______ ______ clean my room and ________ _______ ________.
7.我必须学会说英语。
I _______ ______ ________ ________ English.
8.我们的数学老师对我们要求严格。
Our math teacher _______ ______ ______us.
9.我不得不做英语作业。
I _______ _______ do my English homework.
10.我觉得我家的约束太多了。
I think I have ________ ________ rules in my house.21cnjy.com21cnjy.com
11.我晚上10：00 前必须上床睡觉。
I have to _______ in bed _________ ten o’clock in the evening.21·世纪*教育网
12.你认为你的英语课怎么样？
What do you ______ ________ your English class
13.我们不能在教室里吃东西。
We can’t ________ in the ____________.
14.放学后我得练弹钢琴。
I _______ ______ practice the piano _________ school.
15.有课的晚上我们不应该看电视。
We shouldn’t _________ TV ________ school ___________.
Step 5:【学习反思】
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