(共31张PPT)
人教版 七年级下册同步课件
Unit 4
Don't eat in class!
Section A Grammar Focus-3c
To learn to use “can” for permission.
To learn to write the rules.
To learn to make questions about rules and answer.
祈使句的相关用法
Objects:
Don’t smoke!
No smoking!
Talk about rules in our life:
Look at the signs and talk about them in different ways.
Lead in:
Don’t talk aloud!
Be/ Keep quiet!
Don’t take photos!
No photos!
Don’t eat here!
No food/eating!
Don’t fight!
No fighting!
Don’t listen to music!
No music!
Don’t arrive/be late for class!
Eat in the dinning hall.
Don’t sleep in class.
Play basketball in P.E. class.
Listen to the teacher carefully.
Do homework on time.
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.
Grammar Focus
Presentation:
Read the sentences:
1. 不要在楼道里跑。
______________________________
2. 不要打架。
____________________
3. 有什么规则？
______________________________
4. 我们必须按时上课.
_______________________________
背一背Grammar Focus部分，完成下列句子。
Don’t fight.
Don’t run in the hallways.
What are the rules
We must be on time for class.
5. 我们可以在教室里吃东西吗？
_____________________________
6. 不能。但我们可以在餐厅里吃东西。
_______________________________
______________________________
7. 我们可以在上课的时候带帽子吗？
_____________________________
Can we wear a hat in class
No, we can’t, but we can eat
in the dining hall.
Can we eat in the classroom
8. 他在学校里必须穿校服吗？
_________________________________________
9. 是的，必须。/ 不，不必。
_________________________________
10. 你们必须做什么？
_______________________________
11. 在图书馆里我们必须保持安静。
____________________________________
Yes, he does. / No, he doesn’t.
Does he have to wear a uniform at school
What do you have to do
We have to be quiet in the library.
什么是祈使句？
用于表达命令，请求，劝告， 警告，禁止等的句子就叫做祈使句。
祈使句的特点
1.Don’t eat in the classroom.
2.Open the door!
3.Look at the blackboard.
4.Please be careful!
5.Stand up, please!
1.主语（多数是You,一般省略）
2.开头：动词原形
3.否定形式：Don’t ＋动词原形
4.为了表达委婉的语气，可在
句首,句末加上please。
5.祈使句用降调。
肯定祈使句
1.__________（open）the door for me, please！
2._________ （be ）careful when you go out at night!
3.--Let ’s _______(play) the piano for half an hour.
--That sounds good.
Do型
Be型
Let型
Open
Be
play
以动词原形开头
Be ＋adj.
let＋sb.＋动词原形
Listen to me!
Be quick!
Let ’s walk!
否定祈使句
Don’t型
No型
Let否定型
Don't ＋动词原形开头
No ＋n./v. ＋ ing
Don’t let…＋动词原形
Don’t talk!
No photos!
Don’t let him go in!
1.Don’t _______（talk）in class！
2.No ________ (run), it's dangerous to do so !
3.Don’t let him ___（eat）in class.
talk
running
eat
难点突破
Let's是 Let us 的缩写形式
Let's不等于 Let us
1.Let's walk and talk.（建议）
2.Let us walk and talk . （请求）
Let's既包括说话者，又包括说话对象，但let us 只包括说话者!
巧变祈使句
句型72变：
1.Open the door ,please!(变否定句）
2.You can’t be late for school.（变成祈使句）
3.You must wear your uniform! （变成祈使句）
Tip1:肯定变否定,动词原形前面加Don’t！
Tip3:改写祈使句，找到动原省主语！
Don’t open the door, please!
Don’t be late for school!
Wear your uniform(,please)!
Tip2:遇到can’t 变don’t再找动原莫迟疑！
将下列句子翻译成英语。
1. 请看着我。
2. 不要在路上踢足球。
3. 让我们帮助他。
Please look at me. /
Look at me, please.
Don’t play soccer in the street.
Let’s help him.
4. 同学们，在图书馆请保持安静。
5. 上课不要迟到。
6. 在校期间要穿校服。
Be quiet in the library, boys and girls.
Don’t be/arrive late for class.
Wear school uniform at school.
Library Rules
Don’t talk. /No talking.
________________
________________
________________
3a Write the rules for the school library.
Don’t listen to music./ No music.
Don’t eat or drink./ No food.
Don’t take photos. / No photos.
3b Use the words to make questions about the rules. Then write answers according to your school.
Be quiet
Q: Does she have to be quiet in the library
(she/have to/in the library)
A: Yes, she does.
Eat
Q: ______________________________________________ (he/have to/in the dining hall)
A: __________________
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 listen to music in the hallways
No, we can’t.
Can we wear a hat in the classroom
No, we can’t.
can 能，能够 （表示许可）
—Can I have a look 我可以看一看吗？
—No, you can’t. 不, 你不能。
can 能，会 （表示能力）
—Can you speak English 你会说英语吗？
—Yes, I can. 是的, 我会。
情态动词can
情态动词have to与must
情态动词must和have to都有“必须”的含义，它们的用法如下：
must “必须”、“应该”的用法:
1. must 表示“必须”、“应该”。
例：We must listen to the teacher carefully in class.
我们必须专心听讲。
Everyone must obey the school rules.
每个人必须遵守校规。
2. must的否定形式must not=mustn’t表示“不应该”、“禁止”、“不准”。语气比较强烈。
例：You mustn’t talk in class. 你上课不准讲话。
We mustn’t be late for school. 我们上学禁止迟到。
3.must开头的一般疑问句，肯定回答用must，但否定回答用needn’t 或don’t have to。而不用mustn’t来回答
—Must I do my homework before 8 this evening
—Yes, you must. —No, you needn’t./No, you don’t have to.
have to 表示“必须”、“不得不”，三单现形式为has to, 过去式为had to
例：He has to stay in bed for 3 or 4 days.
We will have to get up early tomorrow.
must与 have to的区别：
must表示的是说话人的主观看法，而have to则表示的是客观需要。
I must go now. (主观看法)
My mother is ill, so I have to go now. (客观需要)
句型转换：
1. You can’t take photos in our library. (改为祈使句)
______________ ______________ photos in our library.
2. She has to walk to work every morning. (改为一般疑问)
__________she _________ to walk to work every morning
3. At my home I must do my homework first. (改为同义句)
At home I ___________ ________do my homework first.
4. Do your homework carefully. (改为否定句)
_______________ ____________your homework carefully.
5. Don’t eat in class, John. (改为同义句)
____________ ______________________in class, John.
Don’t
take
Does
have
have
to
Don’t
do
No
eating
Exercises:
用所给单词的适当形式填空：
1. _______ _________(not listen) to music in bed.
2. Do you have to ________(clean) the room every day
3. You can’t ________(wear) a hat in class.
4. Please ________(arrive) at school on time (准时).
5. John ____ (be) never late for class in the morning.
is
listen
clean
wear
arrive
Don’t
6. Does he ______(have) to be on time
7. We have to ____(be) quiet in the library.
8. You must ______(eat) in the dining room.
9. What do you have to ____(do)
10. She __________(not) have to wear a uniform.
have
be
eat
do
doesn’t
用have to的适当形式填空：
1.We clean our classroom after school.
2.She make breakfast before going to school.
3.It’s late. My mother make dinner for us.
4.Emily and Peter live in China now. They ___________ learn to speak Chinese every day.
have to
have to
has to
has to
Homework:
完成课前预习和课后跟踪练习。
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Unit 4 Don’t eat in class.
Section A Grammar Focus-3c教学设计
Class Type Grammar
Objectives To learn to use “can” for permission.To learn to write the rules.To learn to make questions about rules and answer.祈使句的相关用法
Period 1
Procedure
Lead-in Talk about rules in our life, students look at the signs and talk about them in different ways.
Step 1 Presentation:Read the sentences, then complete the sentence without looking at the textbooks.Summary:什么是祈使句？用于表达命令，请求，劝告， 警告，禁止等的句子就叫做祈使句。祈使句的特点1.Don’t eat in the classroom.2.Open the door!3.Look at the blackboard.4.Please be careful!5.Stand up, please! 1.主语（多数是You,一般省略）2.开头：动词原形3.否定形式：Don’t ＋动词原形4.为了表达委婉的语气，可在句首,句末加上please。5.祈使句用降调。肯定祈使句Do型以动词原形开头Listen to me!Be型Be ＋adj.Be quick!Let型let＋sb.＋动词原形Let ’s walk!1.__________（open）the door for me, please！2._________ （be ）careful when you go out at night!3.--Let ’s _______(play) the piano for half an hour. --That sounds good.否定祈使句Don’t型Don't ＋动词原形开头Don’t talk!No型No ＋n./v. ＋ ingNo photos!Let否定型Don’t let…＋动词原形Don’t let him go in!1.Don’t _______（talk）in class！2.No ________ (run), it's dangerous to do so !3.Don’t let him ___（eat）in class.难点突破:Let's是 Let us 的缩写形式Let's不等于 Let us1.Let's walk and talk.（建议） 2.Let us walk and talk . （请求） 巧变祈使句1.Open the door ,please!(变否定句）2.You can’t be late for school.（变成祈使句）3.You must wear your uniform! （变成祈使句）将下列句子翻译成英语。1. 请看着我。2. 不要在路上踢足球。3. 让我们帮助他。4. 同学们，在图书馆请保持安静。5. 上课不要迟到。6. 在校期间要穿校服。3a Write the rules for the school library.3b Use the words to make questions about the rules. Then write answers according to your school.情态动词have to与must情态动词must和have to都有“必须”的含义，它们的用法如下：must “必须”、“应该”的用法:1. must 表示“必须”、“应该”。例：We must listen to the teacher carefully in class. 我们必须专心听讲。 Everyone must obey the school rules. 每个人必须遵守校规。2. must的否定形式must not=mustn’t表示“不应该”、“禁止”、“不准”。语气比较强烈。 例：You mustn’t talk in class. 你上课不准讲话。We mustn’t be late for school. 我们上学禁止迟到。3.must开头的一般疑问句，肯定回答用must，但否定回答用needn’t 或don’t have to。而不用mustn’t来回答—Must I do my homework before 8 this evening —Yes, you must. —No, you needn’t./No, you don’t have to.have to 表示“必须”、“不得不”，三单现形式为has to, 过去式为had to例：He has to stay in bed for 3 or 4 days.We have to get up early tomorrow.must与 have to的区别：must表示的是说话人的主观看法，而have to则表示的是客观需要。I must go now. (主观看法)My mother is ill, so I have to go now. (客观需要)
Step 2 Exercises:句型转换：1. You can’t take photos in our library. (改为祈使句)______________ ______________ photos in our library.2. She has to walk to work every morning. (改为一般疑问)__________she _________ to walk to work every morning 3. At my home I must do my homework first. (改为同义句)At home I ___________ ________do my homework first.4. Do your homework carefully. (改为否定句)_______________ ____________your homework carefully.5. Don’t eat in class, John. (改为同义句)____________ ______________________in class, John.用所给单词的适当形式填空：1. _______ _________(not listen) to music in bed.2. Do you have to ________(clean) the room every day 3. You can’t ________(wear) a hat in class.4. Please ________(arrive) at school on time (准时).5. John ____ (be) never late for class in the morning.6. Does he ______(have) to be on time 7. We have to ____(be) quiet in the library.8. You must ______(eat) in the dining room.9. What do you have to ____(do) 10. She __________(not) have to wear a uniform.用have to的适当形式填空：1.We_________clean our classroom after school.2.She__________make breakfast before going to school. 3.It’s late. My mother__________make dinner for us.4.Emily and Peter live in China now. They ___________ learn to speak Chinese every day.
Step 3 Homework:完成课前预习和课后练习。
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Unit 4 Don’t eat in class.
Section A Grammar Focus-3c课后跟踪练习
Ⅰ.根据句意及所给提示完成单词。
1.It's twelve o'clock. The students are having lunch in the d________ hall.
2.It's snowing o_____________, today, it’s very cold.
3.I think it's i__________ to learn English well.
4. Mary can b ________ her good friend to the music party.
5. I am s ________ I lost (丢失) your watch.
6. Can you do your homework b________ I come
7. She usually l_________ to music for half an hour every afternoon.
8. I can’t go out with friends o_______ school days.
9. She h_____ to help her parents on the farm.
10. Don’t run in the h________.
Ⅱ.用括号中所给词的适当形式填空。
1.___________ your homework before going to bed. (do)
2.Please _________ quiet in class, our teaching is teaching. (be)
3.____________ the cat go out. (not let)
4.No ___________ here, it’s dangerous. (swim)
5.They have to ________ the bus to school. (take)
6.Your bedroom is dirty, ________ to clean it now. (go)
7.Anny is good at ___________ the violin (play)
8.It’s very important for us __________ English well. (learn)
9.—Must we do our homework now
—No, you __________. (must)
10.We have a lot of _____________ in our school. (rule)
Ⅲ.单项选择题。
1.You can’t wear a hat in class. It is our school _________.
A.subjects B. classes C. rules D. lessons
2.There are many people in the library, but it’s very _____________.
A.quiet B. noisy C. dirty D. small
3.Can you ___________ me __________ my Chinese
A.help; with B. help; to C. help; in D. help; from
4.Cindy, _______ on the wall, it’s not good.
A.draw B. not draw C. to draw D. don’t draw
5.It’s a nice day today, let’s _________ and walk in the park.
A.go out B. get up C. eat out D. get dressed
6.—Don’t play soccer on the road, boy.
—__________, sir. I won’t do it next time.
A.Sorry B. Thank you C. Excuse me D. See you
7.We __________ cross the road when the traffic lights are red.
A.can’t B. mustn’t C. needn’t D. don’t have to
8.__________ walk on the grass.
A.Doesn’t B. Don’t C. Not D. No
9._______ up now, it’s time for breakfast.
A.Get B. To get C. Getting D. Gets
10.You _______ smoke here, the sign says “No smoking”.
A.can B. need C. needn’t D. mustn’t
IV. 句型转换。
1. He has to eat in the dinning hall. (变成否定句)
2.I can bring some cake and fruit to your party. (变成一般疑问句并做肯定回答)
3.We have to be quiet in the library. (变成一般疑问句并做肯定回答)
4.They have to come to school every day. (变成一般疑问句并做否定回答)
5.We have to wear school uniform. (就划线部分提问)
6.You can eat in the dinning hall. (就划线部分提问)
7.Be late for class. (变成否定句)
8.I have to leave home at 6:30 in the morning. (就划线部分提问)
9.You must listen to music in the music room. (变成一般疑问句并做肯、否定回答)
10. He wants to know my telephone number. (就划线部分提问)
参考答案：
Ⅰ.根据句意及所给提示完成单词。
1.dinning
2.outside
3.important
4.bring
5.sorry
6.before
7.listens
8.on
9.has
10.hallway
Ⅱ.用括号中所给词的适当形式填空。
1.Do
2.be
3.Don’t let
4.swimming
5.take
6.go
7.playing
8.to learn
9.needn’t
10.rules
Ⅲ.单项选择题。
1-5 C A A D A 6-10 A B B A D
IV. 句型转换。
1. He doesn’t have to eat in the dinning hall.
2. Can you bring some cake and fruit to my party Yes, I can.
3. Do you have to be quiet in the library Yes, we do.
4. Do they have to come to school every day No, they don’t.
5. What do you have to do
6. Where can you eat
7. Don’t be late for class.
8. When/ What time do you have to leave home
9. Must you listen to music in the music room No, I don’t have to/ needn’t.
10. What does he want to know
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Unit 4 Don’t eat in class.
Section A Grammar Focus-3c课前预习
一、重点单词
1.到达______________
2.过道；走廊______________
3.大厅；礼堂______________
4.跑步；奔跑______________
5.打架______________
6.必须______________
7.安静的__________
8.图书馆______________
9.穿；戴______________
10.校服；制服______________
11.帽子______________
12. 教室______________
13. 谈话；说______________
二、重点短语
1. 在走道上______________
2. 按时；准时______________
3. 在餐厅里______________
4. 在教室______________
5. 戴帽子_____________
6. 穿校服______________
7. 必须；不得不______________
8. 在学校______________
9. 保持安静______________
10. 在图书馆里_______________
11. 听音乐___________________
12. 每天______________
13. 来学校______________
14. 上课迟到______________
15. 许多_____________
16. 在外面吃饭______________
17. 校规______________
18. 家规______________
19. 班规______________
20. 许多规矩______________
三．看图，写出下列祈使句。
1. ______________________________
2.______________________________
3.______________________________
4. ______________________________
5.______________________________
五．翻译下列句子。
1. 图书馆里面请保持安静。
_______________________________________
2.在校期间，学生必须穿校服。
_______________________________________
3.我们不可以在上课时吃东西。
_______________________________________
4.上课时不可以戴帽子。
_______________________________________
5.你们学校都有什么校规？
_______________________________________
6.你们班的班规是什么？
_______________________________________
7.你家的家规是什么？
_______________________________________
8.我们不可以打架。
_______________________________________
9.上课不能听音乐。
_______________________________________
10.夜晚我不可以外出。
_______________________________________
六．把下列句子变成一般疑问句，并作出肯否定回答。
1.She has to be quiet in class.
2.He has to eat in the dinning hall.
3.We can listen to music after class.
4.He likes reading stories before going to bed.
5.He is reading stories in his bedroom.
6.They can play basketball on Firday afternoon.
7.We have to come to school on time on Sunday afternoon.
8.She is eating out with her friends.
9.It’s my first day at school.
10.There are a lot of rules in our school.
参考答案：
一、重点单词
1.arrive
2.hallway
3.hall
4.run
5.fight
6.must
7.quiet
8.library
9.wear
10.uniform
11.hat
12. classroom
13. talk
二、重点短语
1.in the hallway
2. on time
3. in the dinning hall
4. in the classroom
5. wear a hat
6. wear school uniform
7. have to
8. at school
9. be quiet
10. in the library
11. listen to music
12. every day
e to school
14. arrive/be late for class
15. a lot of
16. eat outside
17. school rules
18. family rules
19. class rules
20. a lot of rules
三．看图，写出下列祈使句。
1. No photo./ Don’t take photos.
2. No music./ Don’t listen to music.
3. Be quiet./ Keep quiet./ Don’t talk. / No talking.
4. No smoking./ Don’t smoke here.
5. No food. /No eating. /Don’t eat here.
四．翻译下列句子。
1. Please be quiet in the library.
2. Students have to wear school uniforms at school.
3. We can’t eat in class.
4. Don’t wear a hat in class.
5. What are the rules in your school / What rules are there in your school
6. What are the rules in your class / What rules are there in your class
7. What are the rules in your family / What rules are there in your family
8. We can’t fight.
9. Don’t listen to music in class.
10. I can’t go out at night.
五．把下列句子变成一般疑问句，并作出肯否定回答。
1. Does she have to be quiet in class
Yes, she does. /No, she doesn’t.
2.Does he have to eat in the dinning hall
Yes, he does. /No, he doesn’t.
3.Can you listen to music after class
Yes, you can. /No, you can’t.
4.Does he like reading stories before going to bed
Yes, he does. /No, he doesn’t/
5.Is he reading stories in his bedroom
Yes, he is. /No, he isn’t.
6.Can they play basketball on Friday afternoon
Yes, they can. /No, they can’t.
7.Do you have to come to school on time on Sunday afternoon
Yes, we do. /No, we don’t.
8.Is she eating out with her friends
Yes, she is. /No, she isn’t.
9.Is it your first day at school
Yes, it is. /No, it isn’t.
10.Are there a lot of rules in your school
Yes, there are. /No, there aren’t.
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