Unit 4 Don’t eat in class. Section A Grammar Focus-3c 课件(共35张PPT)

(共35张PPT)
Unit 4
Don’t eat in class.
Section A Grammar Focus-3c
1. 不要在楼道里跑。 _______________________
2. 不要打架。 _______________
3. 有什么规矩？ __________________________
4. 我们必须按时上课。__________________________
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。
______________________________
______________________________
Don’t fight.
Don’t run in the hallways.
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.
Complete the sentences.
Revision
Fill in the blanks according to the conversation.
John and Alice are talking about their school rules. Firstly, they _______ be late for class. They must be _________. Secondly, they ____ bring music players to school. And they always _________ wear the school uniform. Also, they _______ be quiet in the library.
can’t
on time
can’t
have to
have to
Revision
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)
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. …
3c
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! Lilin’s school is the coolest.
Key Word
library rules
2. Sentences
(1) —Can we wear a hat in class
—Yes, we can./No, we can’t.
(2) Do we/Does he have to...
Summary
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
1. Review the sentence models in Grammar Focus.
2. Collect much more signs you see in your daily life and try to describe them in English.
thank you！