(共24张PPT)
Module 11 Way of life
Unit 3 Language in use
Language practice
1. You must say Mr or Mrs when you meet someone for the first time.
2. You can take it away.
3. You mustn’t break anything.
4. You needn’t wait!
表示主观的义务和必要, 主要用于肯定句和疑问句中, 意思为 “必须……，得……，要……”；由must引导的疑问句，肯定回答要用must或have to； 否定回答要用needn’t或don’t have to, 意思是“不必”；must的否定形式mustn’t表示禁止，意思是“不能，不许”。
语法探究 must的用法
e.g:
We must find a good method to learn computer well.
—Must I finish the task right now
—Yes, you must. / Yes, you have to.
(—No, you needn’t. / No, you don’t have to. )
You mustn’t come here without permission.
2) 表示肯定的猜测，常用于肯定句中，意为 “一定是, 必然……”。
e.g:
Your sister must be a doctor in this hospital. ( 对现在的猜测 )
He must be reading newspapers in the reading room now.（对正在进行的猜测）
It must have rained last night, for the ground is wet.
（对过去的猜测）
can 的用法
can的否定形式为cannot，缩写为can’t。
1) 表示能力。
I can’t swim.
Can you drive？
注意：can表示能力可和be able to互换使用，且后者有更多的时态，be able to常被用来表示can所不能表示的将来或完成的概念。
They will be able to run this machine on their own in three months.
2) 表示可能性，意思是：可以，可能。
That big cinema can seat 2,000 people.
He can be very friendly at times.
3) 表示允诺，意思是：可以，能够。
You can have the book when I finish it.
Can I use your pen？
4) 表示惊异、不相信、猜测等（用于疑问句、否定句或感叹句中），意思是：会，可能。
This can’t be true.
Can it be true？
Complete the conversations with can or can’t.
1. A: Can you drive a car at the age of seventeen
in England
B: Yes, we ______. How about in China
A: No, we ________.
2. A: Can you open a gift immediately after you
receive it in England
B: ___________. What about in China
A: No, we usually don’t.
can
can’t
Yes, we can
3. A: Can you push your way onto a bus in
England
B: ____________. How about in China
A: No, we ______ either.
4. A: Can you drive on the right-hand side of the road
in England
B: ___________. What about in China
A: Yes, we must.
No, we can’t
can’t
No, we can’t
1. You _________ be late for school.
2. You _________ eat in the library.
3. You _________ ride your bike in the playground.
4. You _______ do your homework.
5. You _______ listen to the teacher.
must
must
must not
School rules
Complete the sentences with must or must not.
must not
must not
It is important to know what you must and must
not do when you meet people from a different country.
You (1) may/ must not ask Westerners “How old are
you ” because it is not polite. You (2)might/ can know
someone well, but you (3) must/ need not ask “How
much money do you make ” He (4) may/ can never
speak to you again!
3. Underline the correct words.
In public places, you (5) must/ can ask people
before you take photos of them, and you (6) must not/
might not eat or drink in shops or museums.
In some countries you (7) cannot/ can go into
someone’s house with your shoes on. You (8) need not/
must not take them off. But in some other countries
you (9) might/ must not wear shoes in the house.
Listen to a teenager talking about his life. Check (√) the things he must or mustn't do.
must mustn’t
1 clean up bedroom once a week
2 wash up after dinner
3 stay out after 9 pm
4 do homework before going
out
5 wash hands before dinner
6 play music loudly after 10 pm
√
√
√
√
√
√
Listen again. What two things does he say he can do
1. _________________________________
_______________________________
2. _________________________________
_______________________________
He can go out with his friends at weekends.
He can play music loudly before ten o’clock at night.
Write some things you can, must and must not do at home.
I can …
I must …
I must not …
I can watch TV when I come home from school.
I must help around the house, for example, do the washing up.
I must not go to bed late.
possible answers:
Now work in pairs. Tell each other three things you must do at home and three things you mustn’t do. Are your home rules different or the same
—I must visit my grandparents once a week. I mustn’t stay up late in the evening.
— …
Talk
1. Use your __________ to look up any words
you do not understand.
2. Most Chinese people eat noodles with
____________.
3. Jenny could not wait to open her birthday
________.
4. He thinks it is cool to wear his __________
back-to-front.
5. Where is my __________ Let’s play a
game.
baseball cap chess set chopsticks dictionary presents
dictionary
chopsticks
presents
baseball cap
chess set
Complete the sentences with the words or expressions in the box.
Play a game. Choose a word or an expression from the box and describe it to the class. The class guess what it is.
baseball cap bike chess set chocolate chopsticks dictionary fish and chips litter photo video game
A: Many people have one.
B: Is it a chess set
A: No. You use it to get to places.
C: Is it a bike
A: Yes.
完成句子
1. 你一定不要在中国新年的第一天打扫卫生。
You ________ _____ _____ _______ on the first day
of the Spring Festival.
2. 在街上你也不常听到人们大声喊叫。
And you don’t often _____ people __________ in
the street.
mustn’t do any cleaning
hear
shouting
训练·评价
3. 新娘不能准时到达教堂, 必须要晚几分钟。
Then the bride ________ _____ _____ the church
_____ _____ _____ a few minutes late.
mustn’t arrive at
on time but
Homework
Write some advice for foreign visitors to a
Chinese family.
