资源简介

(共49张PPT)
Unit Two
No Rules, No Order
Why do we need rules
Section A - Grammar Focus
Learning Objectives
语言能力
1
学习能力
2
文化意识
3
思维品质
4
to master the usages of imperatives and modal verbs(can, have to, must) and use them to express the rules
to master the ability of learning to meet practical needs; to give information about rules in different places
to follow the rules; to know the rules in different places
to stimulate the interest of English learning; to lead Ss to express their thoughts
CONTENT
1. Imperatives
3. Modal Verb: Must
4. Modal Verb: Have to
5. Summary
6. Homework
2. Modal Verb: Can
Good learners wanted
Listen carefully
Speak clearly
Read aloud
Work actively
Show respect
Note something important
Members Listen carefully Speak clearly Read aloud Work actively Show respect Note In total
Group leader
Member 1
Member2
Member3
Evaluate yourself
Warm up
Let’s sing!
What rules are mentioned
Warm up
What rules are mentioned
Walk in school.
Be nice.
Raise your hand and
wait to speak.
Warm up
What rules are mentioned
Keep your hands and feet to yourself.
Clean up.
Look at the speaker .
Presentation
Keep your hands and feet to yourself.
Clean up.
Look at the speaker .
Raise your hand and wait to speak.
Walk in school.
Be nice.
They’re imperatives
(祈使句).
动词原形
Presentation
什么是祈使句(Imperatives)？
● 用于表达命令、请求、劝告、警告、禁止等
的句子叫祈使句。
● 祈使句因对象（即主语）是第二人称，
所以通常省略。
● 祈使句为动词原形开头（No型除外）。
● 祈使句有Do型、Be型、Let型、No型。
Presentation
Do型
肯定形式 否定形式
实义动词原形+其他 Go away. Listen carefully. Walk slowly. Don’t+实义动词原形+其他
Don’t draw on the wall.
Don’t run.
Don’t make noise.
Presentation
Be型
肯定形式 否定形式
Be+形容词/名词(词组) Be nice. Be polite. Be a good boy. Don’t+be+形容词/名词(词组)
Don’t be nervous.
Don’t be shy.
Don’t be a bad person.
Presentation
Let型
肯定形式 否定形式
Let+宾语+动原+其他 Let’s go home. Let’s do it. Let me try. Don’t+let+宾语+动原+其他
Let+宾语+not+动原+其他
Don’t let him touch it.
Let him not touch it.
Presentation
No型:表示禁止
否定形式
No+名词/动名词
No photos.
No fishing.
No swimming.
Presentation
Read the sentences. Do the verbs in bold need to change forms Why
3a
They don’t need to change forms. They’re imperatives.
Presentation
Read the sentences. Do the verbs in bold need to change forms Why
3a
What about these
They also don’t need to change forms. They follow modal verbs(情态动词).
Presentation
情态动词三原则：
● 情态动词不能单独使用，后面需加动词原形。
● 情态动词没有人称和数的变化(have to除外)。
● 情态动词否定直接在后面加not (have to除外，
have to的否定形式是not have to)。
Presentation
情态动词can：
He can swim.
I can jump.
They can run.
can表示能力
Presentation
情态动词can表示允许：
You can play basketball at the weekend.
We can’t run in the hallways.
You can’t litter.
We can’t eat in class.
can的否定形式：
can not
缩写：can’t
Presentation
情态动词can表示请求：
Can you help me with my Chinese
Can we bring our phones to class No, we can’t.
Can we eat snacks in class
Can I open the door
Yes, you can.
can的回答：
Yes,主语+can.
No,主语+can’t.
Let’s watch!
must & mustn’t
Presentation
Presentation
情态动词must：
must表示“必须”，例如：
We must keep them in our lockers.
You must read a book before you watch TV.
mustn’t表示“不准；禁止”
You mustn’t litter.
must的否定形式：
must not
缩写：mustn’t
Presentation
情态动词have to：
have to表示“不得不，必须”。例如：
We have to be quiet in the library.
She has to do her homework first when she gets home.
We have to eat in the dinning hall.
Presentation
情态动词must与have to：
have to表示“必须”时，与must意义很接近，有时可与must互换。例如：
We have to/ must follow the rules.
但是它们也有所不同。
Presentation
must和have to的不同：
1. We must hurry. I don’t want to miss the
beginning of the show.
We have to hurry. The train is leaving
in five minutes.
must 通常表示的是说话人的主观看法，语气比较强烈；
have to往往强调客观需要。
Presentation
must和have to的不同：
2. You mustn’t talk to your mother like that.
You don’t have to come if you don’t want to.
它们的否定式含义大不相同。mustn’t表示“不准、禁止”，而don’t have to 表示“不必”。
Presentation
must和have to的不同：
3. I/We/You/They/He must do something about it.
I have to finish my work today.
She has to work late today.
They have to get to the station before 5 o’clock.
must没有人称和数的变化；
而have to有人称和数的变化。
Practice
Complete the sentences using can, have to/ must, can’t/mustn’t.
3b
1. Don’t jump the queue. You ________ wait for
your turn.
2. I _______feed may dog many kinds of food,
but I _______ give himchocolate. It is bad for him!.
3. A:Can I leave the class if I don’t feel well
B: Yes, but you ______ tell your teacher
about it when you _________ be absent
from class.
have to/must
can
can’t
must/have to
have to/must
Practice
Complete the sentences using can, have to/ must, can’t/mustn’t.
3b
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!
must/have to
must
Let’s watch!
Signs are everywhere.
Presentation
Look at the first sign and read the rules. Then write the rules for the other signs.
3c
Practice
Look at the first sign and read the rules. Then write the rules for the other signs.
3a
Do not park.
No parking.
You can’t / mustn’t park.
Do not take photos.
No photos.
You can’t / mustn’t take photos.
Practice
Look at the first sign and read the rules. Then write the rules for the other signs.
3a
Do not swim.
No swimming.
You can’t / mustn’t swim.
Do not feed the birds.
No feeding the birds.
You can’t / mustn’t feed the birds.
Practice
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.
3d
Practice
A Library
read books quietly
borrow books
keep quiet
return books on time
make noise / yell
draw or write
in the books
run everywhere
smoke in the library
What can’t/mustn’t we do
What can/must we do
Brainstorm
Draw Signs
Signs in the Library
Keep quiet.
No yelling.
1. In the library, we
must keep quiet.
We mustn’t make
noise. We can’t yell.
Draw Signs
No running.
2. In the library, we can’t run.
Do not draw or write in the books.
3. We can’t draw or
write in the books of
the library.
Signs in the Library
A School
Brainstorm
A Dinning Hall
Brainstorm
A Park
Brainstorm
A Cinema
Brainstorm
A Hospital
Brainstorm
Brainstorm in groups,
draw signs then share.
Imperatives(祈使句):
1
Summary
● 用于表达命令、请求、劝告、警告、禁止等
的句子叫祈使句。
● 祈使句因对象（即主语）是第二人称，
所以通常省略。
● 祈使句为动词原形开头（No型除外）。
● 祈使句有Do型、Be型、Let型、No型。
Imperatives(祈使句):
1
Summary
情态动词三原则：
● 情态动词不能单独使用，后面需加动词原形。
● 情态动词没有人称和数的变化(have to除外)。
● 情态动词否定直接在后面加not (have to除外，
have to的否定形式是not have to)。
Summary
2
情态动词can:
2
Summary
● can可用于表示能力、允许、请求。
● can的否定形式是can not，缩写为can’t。
情态动词must和have to :
must(必须) have to(不得不，必须)
强调主观看法 强调客观需要
否定mustn’t 表示 “不准；禁止” 否定“not have to”
表示“不必”
没有人称和数的变化 有人称和数的变化
Must-do必做
Write some rules for your class or school.
Choose-to-do选做
Make a poster of the rules and draw sings for them.
Homework
Thanks for listening

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