Module 6 Animals in danger. Unit 3 课件(共48张PPT)

(共48张PPT)
Unit 3
Are these behaviors right
What will you do if you are in these situations
when someone slips on a banana peel
yawning (打哈欠)
while somebody is talking to you
smoking
in a public place
talking loudly
in a theatre
using cell phone
in a reading room
laughing and whistling
You must say Mr. or Mrs. When you meet someone for the first time.
You can take it away.
You mustn't break anything.
You needn’t wait!
Read the sentences and pay attention to the underlined parts.
⑴ must表示主观义务，意思是“必须”。
由must引起的疑问句，肯定回答用must, 否定回答用needn’t 或don’t have to(不必)。
I must finish the work before nine.
-- Must I finish the work before nine
--- Yes, you must.
/ No, you needn’t.
情态动词must的用法
⑵ mustn’t表示禁止，意思是“不可以，不要”。
由may引起的疑问句，肯定回答用may，否定回答用mustn’t 。
You mustn’t come late tomorrow.
— May I hand in the paper next time
— Yes, you may.
/ No, you mustn’t.
两者都表示必须，但must侧重于说话者的主观看法，认为有必要或有义务去做某事，have to 侧重于客观需要，含有“不得不，被迫”之意。
All passengers must wear seat belts.
所有乘客都要系安全带。
My bike was broken yesterday, so I had to walk to school.
昨天我的自行车坏了，所以我只能走路去学校。
must和have to的区别
注意：在表示客观需要时一般用have to (不得不)，而不用must。
It’s raining heavily so we have to stay at home and do some reading.
用于否定句时，must的否定式must not (mustn’t) 表示“一定不要，不允许”；而have to 的否定式do not (don’t) have to 表示“不必”（=needn’t）。
You mustn’t tell him about it. （可能是秘密）
You don’t have to tell him about it. （他可能知道了或者没有必要让他知道）
( ) — I can’t stop smoking, doctor.
— For your health, I’m afraid you ______. (2011贵州安顺)
A. may B. can C. have to D. need
[解析] 句意“--医生，我不能戒烟。--为了你的健康，恐怕你不得不” 。 may意为“可以”、can意为“能够”、need意为“需要”均不符合句意。
C
表示允许，意思是“可以，能够，许可”；可用于肯定句、否定句和疑问句中。其否定形式是cannot (can’t)，表示“不能，不可以”，语气弱于must not (mustn’t)。
情态动词can的用法
You can’t put the milk first.
(没有禁止的含义)
Can I have a look at your photo
我可以看一下你的照片吗？
Practice
( ) 1. — Can I go fishing with you, Dad — No, you ______. You ______ stay at home and do your homework first. A. won't; may B. can't; must
C. shouldn't; ought D. needn't; should
B
( ) 2. — Could I look at your new computer
— Yes, of course you _______.
A. could B. can C. will D. might
B
( ) — ______ I swim here
— I’m sorry. Children ______ swim alone here. (2012年广东省)
A. Must , can’t B. May , must
C. Can, mustn’t D. Can’t can
C
中考链接
( ) — Dad, the bread is not enough. I am still hungry. ______ I have something more
— But there’s nothing in the fridge now. (2011四川绵阳)
A. Must B. Need C. Will D. Can
[解析]考查情态动词的用法。must意思是“一定，必须”；need意为“需要”；will意思是“将要”；can意思是“可能，可以”。根据句子“I am still hungry. 我仍旧很俄”可推断“我可以再吃点东西吗”，故选D。
D
need作情态动词表示“需要”，可用于肯定句、否定句和疑问句中。其否定形式是need not (needn’t)比较常用，表示“不需要”或“不必要” 。
Is she wants anything, she need only ask.
如果她要什么，说一下就行了。
You needn’t wait.
你不必等待。
need的用法
sth.
① sb. + need to do sth.
sth. to do sth.
I need some help.
I need to sleep.
need time to work harder.
need还可以用作行为动词，有人称和数的变化），意思是“需要”。
( ) 1. Tom _______ some money to buy books.
A. need to borrow B. needs to borrow
C. needs borrow D. needs borrowing
B
( ) 2. You _______ there today.
A. needn’t going B. needn’t to go
C don’t need to go D. don’t need going
C
B
( ) 3. — Must I finish that work today
— No, you _____. You may finish it in two days.
A. mustn’t B. needn’t C. can’t
1. You _____ listen to your teacher carefully in class.
2. We ________ cross the road if the traffic is busy.
3. He ______ be in the classroom, because the teacher and other students wait him outside.
4. _____ I borrow your bike for an hour I have to go back home now.
Fill in the blanks using can / can’t / must / mustn’t .
must
mustn’t
can’t
Can
( ) 1. — May I go out now, Dad
— No. You _____ let your mother know first. (2011安徽)
A. can B. may
C. need D. must
D
中 考 链 接
( ) 2. — Must I learn all these words by heart
— No, you ______. It’ll be fine if you copy them in your exercise books. (2011山东泰安)
A. needn’t B. can’t
C. shouldn’t D. mustn’t
A
( ) 3. — Can I borrow your ruler, please
—Yes, you ______. But you must return it to me before lunchtime. 【2013江苏徐州】
A. have B. can
C. must D. used to
B
( ) 4. — Must I turn down the radio now
— No, you _______. (2012 广西桂林)
A. mustn’t B. needn’t
C. can’t D. won’t
B
( ) 5. — Can I park my car in front of the building
— No, you ________. 【2013江苏淮安】
A. won't B. can't
C. needn't D. couldn't
B
( ) 6. —Must I start now
—No, you ________. (2013湖南娄底)
A. mustn't B. can't C. needn't
C
( ) 7. — Can we run across the road now
— No, we ______. We have to wait until the light turns green. (2013山东菏泽)
A. needn't B. mustn't
C. couldn't D. shouldn't
B
( ) 8. Children _______ sit in the front seat of a car. It’s too dangerous. 【2014重庆】
A. need B. needn’t
C. must D. mustn’t
D
Write and speak
must mustn’t can can’t
Family rules
Are your home rules the same or different
Home rules the same different
must get up early
must go to bed early
Pair work
mustn’t play computer games
mustn’t watch TV in bed
must wash hands
must take off shoes
mustn’t stay out late
mustn’t smoke
Talking
school rules
rules in the classroom / library / on the playground
Complete the sentences with must or mustn’t.
School rules
You _______ be late for school.
You _______ eat in the library.
You _______ ride your bike in the playground.
You _______ do your homework.
You _______ listen to the teacher.
mustn’t
mustn’t
mustn’t
must
must
Look at the pictures and describe them one by one.
Listen to a teenager talking about his life. Check the things he must or mustn’t do.
Must Mustn’t
clean up bedroom once a week
wash up after dinner
stay out after 9 p.m.
do homework before going out
wash hands before dinner
play music loudly after 10 p.m.
√
√
√
√
√
√
Listen again. What two things does he say he can do
He can go out with his friends at weekends.
2. He can play music before 10 o’clock.
Complete the sentences with the words and expressions.
Let’s practice
baseball cap chess set chopsticks
dictionary present
1. Use your _________ to look up any words you don’t understand.
dictionary
2. Most Chinese people eat noodles with _________.
3. Jenny couldn’t wait to open her birthday _________.
chopsticks
presents
4. He thinks it’s cool to wear his __________ back-to-front.
5. Where’s my ________ Let’s play a game.
baseball cap
chess set
baseball cap bike chess set chocolate chopsticks dictionary fish and chips litter
photo video game
Play a game. Choose a word or an expression from the box and describe it to the class. The class guesses what it is.
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.
A: It’s very useful.
B: Is it a book
A: Yes. But it looks like thicker (厚) than the general one.
C: Is it a dictionary
A: Yes.
chopsticks
baseball cap
What presents will you bring when
you visit a friend or family
Do you know what the traditional presents are in the West
chocolate hamper
cakes and biscuits
wine
flowers
1. What present must you bring in Britain
2. What present mustn’t you bring in Greece
Read and answer
Flowers.
White flowers.
Do you know
在讲法语的地区不要送菊花, 因为只有在葬礼时才使用菊花。
在拉丁美洲有些国家，把菊花看成一种“妖花”，只有人死了，才在灵前放菊花。
在德国，如果你应邀去作客，千万不要送女主人红玫瑰，因为它是赠送情人的礼品。
给前苏联一些国家的人送花，结婚日最好向新娘赠送白色或粉色的鲜花，因为它象征着纯洁。送黄色鲜花时要慎重，因为它意味着变节。红色鲜花象征爱情和赞美。另外，花束必须由奇数组成奇数在这些国家是吉利的象征。
在巴西，绛紫色的花主要用于葬礼，因此，千万不要送巴西人绛紫色的花。
如果到芬兰、瑞典等北欧国家，要是应邀到主人家里作客，一定要给女主人带几束单数的鲜花，最好是5枝或7枝。
到英国人家作客，赠送女主人的鲜花，忌送百合花，因为百合花意味着死亡。亦忌赠黄玫瑰，他们认为此花象征分离。
Giving advice to foreign guests who are visiting a Chinese family.
What must they wear
What mustn’t they talk about
What can’t they do
What presents can they bring
When must they arrive
…
Module task
Writing
Rules in China
E.g.: You mustn’t give a clock to a Chinese family as a present.
假如你是张扬，上周你的网友David 给你来了一封邮件，他打算到中国来学习汉语，他想在来到前了解一下中国学生上课与美国有什么不同。请你根据下面的提示，用英语写一封信告诉你的网友David。
美国：
老师只叫学生的名字；学生在课堂上不用举手就可以提问题；在许多学校，学生可以一边喝咖啡、茶、果汁等饮料。
中国：
老师通常叫学生的全名；在课堂上必须先举手再提问题；在课堂上不准吃东西。
Dear David,
Welcome to study Chinese in China. I am happy to tell you the differences in class between China and America. In China, our teachers often call our full names and in America your teachers may call your given names. In China we must put up hands before asking questions, but you needn’t do that in
America. You can ask questions without putting up your hands. In China we mustn’t eat anything during class, but you can eat and drink freely. Though there are differences, I am sure you can do well.
Yours,
Zhang Yang