课件37张PPT。外研版 八年级上册 Module 11 Ways of life
Unit 3
Language in use
Period 1GreetingAfternoon teaTraditional foodGet on
the busmust say Mr or Mrsget to know each other betterask you tonot just…but..tea with milkcan eat
it in…take it away mustn’t push your way onto..stand in a line wait your turn Revision: Make sesntences with the key words:Look at the pictures and make sentences with modal verbs:Presentation:You can’t/mustn’t
smoke.You must stop
at a red light.You can go
at a green light.You should drive on the left in England.You must drive on the right in China.He had better wear warm clothes.Grammar: Modal verbs(情态动词):情态动词是一种本身有一定的词义,表示说话人的情绪,态度或语气的动词,但不能单独作谓语,只能和其他动词原形构成谓语。
情态动词的基本特征：
情态动词+ 动词原形
eg： I can swim/sing/dance/jump.
2. 情态动词无人称和数的变化
eg： She/They/We/I can ride a horse.
3. 否定式构成是在情态动词后面加 "not"
eg：You can’t/mustn’t/needn’t play basketball. 情态动词must 的用法
表示主观的义务和必要，主要用于肯定句和疑问句，意思为 “必须……，得……，要……”；由must引起的疑问句，肯定回答要用must，否定回答要用needn’t，意思是“不必”；must的否定形式mustn’t表示禁止，意思是“不能，不许”。
e.g.—Must I finish the task right now?我必须现在就完成任务吗？
—No, you needn’t.不，你不需要。
You mustn’t come here without permission.
没有允许你不准来这。Grammar: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.
( 现在的猜测 ) 你的妹妹现在一定在这家医院当医生。
He must be reading newspapers in the reading room now.
（正在进行的猜测）他现在肯定正在阅读室看报纸。Grammar:must 的用法have to 与must的区别
两都都表示“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。
e.g. 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。Grammar:must 无人称和数的变化，而have to 则有多种形式。
eg：You will have to show your papers at the gate.
在大门口你得出示证件。
用于否定句时，must 的否定形式mustn't 意为“一定不要”“不允许”；而have to的否定形式don't have to 意为“不必”，相当于needn't。
eg：You mustn't tell him about it.
你一定不要告诉他这件事。(可能是秘密)
You don't have to tell him about it.
你不必告诉他这件事。(他可能知道了)have to 与must的区别Grammar:—Must I do the work today?
—No，you________.You may do it tomorrow. (宁夏)
A．can‘t B．mustn't
C．shouldn't D．needn't
【解析】must 在表示“必须”“应该”时，其一般疑问句的否定回答常用needn't或don't have to表示“不必”，而不用must not。故答案选D。 ?
D典例can的否定形式为cannot，缩写为can't。
1) 表示能力
e.g. I can’t swim. 我不会游泳。
Can you drive？ 你会开车吗？注意：
can表示能力可与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。
e.g. They will be able to run this machine on their own in three months.
他们将在未来的三个月自己操作这个机器。Grammar:can 的用法2) 表示可能性，意思是：可以，可能。
e.g. That big cinema can seat 2,000 people. 那个大影院可以坐2000人。
He can be very friendly at times. 他有时可能非常友善。
3) 表示允诺，意思是：可以，能够。
e.g. You can have the book when I have finished it. 在我读完这本书后，你可以看。
Can I use your pen? 我能用下你的笔吗？
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。
e.g. This can’t be true. 这不可能是真的。
Can it be true？这能成真吗？can 的用法Grammar:典例—Can we finish our homework this afternoon?
—Yes，you________.
A．must B．can
C．can‘t D．need
【解析】考查情态动词的用法。情态动词can意为“可以”，其肯定回答为“Yes，you can.”，否定回答为“No，you can't.”。故选B。 ?
BGrammar:情态动词need的用法 :need意为“需要”
1. 作情态动词
need作情态动词时无人称或数的变化，后接动词原形。
eg：You needn't worry.你不必担心。
(2) 由need引出的一般疑问句，肯定回答常用must或have to；否定回答常用
needn't。
eg：—Need I answer the question？我需要回答那个问题吗？
—Yes，you must/have to. 是的，你必须回答。
/No，you needn't.不，你不必。need 的用法Grammar:2. 作行为动词
need 作行为动词时，有人称和数的变化，后面可接名词、代词、或动词不定式；常用于 need to do sth.结构,表示“需要干…” 可用于肯定句、疑问句和否定句中。
eg：She needs help.她需要帮助。
I don't need to see the doctor. 我不需要看医生。
—Do you need to go at once? 你需要马上走吗？
—Yes，I do.是的，我得(马上)走。
/No，I don't.不，我不用(马上)走。② 实意动词 (need to do) ① 情态动词 (need do) I need buy a big house. Do I need to buy a big house ? He needs to buy a big house. Need I buy a big house ? -- Yes, you must.
-- No, you needn’t / don’t have to. (不必)-- Yes, you do. /-- No, you don’t. 请比较need做情态动词和实意动词的不同Lisa is a little poor at Chinese. I think she needs
________it every day. (黑龙江齐齐哈尔)
A．practice to speak
B．to practice speaking
C．practice speaking
【解析】此题由she后的need的单三形式得知，need在此处为行为动词，后面要接动词不定式，故选B。
B典例 中考链接Grammar:（山西）
--Many people play with mobile phones all day instead of reading
books．
--That’s too bad. Everyone______be a book lover. Reading is more
enjoyable．
A．may B．should C．Would
【分析】--许多人整天玩手机而不是看书．
--这太糟糕了．每个人都应该是一个爱书者．阅读更有趣．
【解答】may可能；should 表义务,意为“应该”
would将要，所以这里用should．故选B．B 中考链接Grammar:（天津）
--Mum, ______I play football this afternoon？
--Sure, but you_______finish your homework first.
A．may；could B．can； must
C．can； mustn’t D．may； can't
【分析】--妈妈，今天下午我可以去踢足球吗？
--当然可以．但是你必须先完成作业．
【解答】can能/可能；may可能；must必须；could可能，更委婉，mustn’t不可以,can’t不可能 can的语气比may要强烈，may要显得婉转．can表示可能，多用于否定句与疑问句．在这里用must表示一定要做的事．故选BBGrammar: 中考链接（咸宁）
--Do you think that kobe will be elected as the MVP this year？
--It_______him. He has retired（退役） since April 13．
A．can’t be B．mustn’t be
C．must be D．can be
【分析】--你认为科比会当选今年的MVP吗？
--不可能是他．他从4月13日起就退役了．
【解答】can‘t不可能；mustn’t禁止；must一定can be可能是．根据他从4月13日起就退役了，所以今年的MVP不可能是他．can’t不可能，故选AAYou _______ say Mr and Mrs when you meet someone for the first time.
You ______ take it away.
I _________ break anything.
You _________ wait!Language practicemustn’tcanmustneedn’t Complete the conversation with can or can’t.11. 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.
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.Yes, we cancan can’tNo, we can’tNo, we can’t can’tLearning to learnTry to make a fact book about cultures of English-speaking countries. Write down the interesting things you find. Look for some pictures to go with them.We must/should listen to teachers carefully.We mustn’t/can’t throw rubbish everywhere.We mustn’t/can’t/shouldn’t sleep in class.We mustn’t/can’t/ shouldn’t use mobile phones in class.Talking about school Rulesarrive late for classrun in the hallwaysfight with classmateseat in the dining hallFree talk:Talk about the school rules:√listen to teachers carefully√sleep in class Complete the sentences with must or must not.School rules
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.mustn’tmustn’tmustn’tmustmust2 It’s 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’s 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! 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 countries you (9) might/ must not wear shoes in the house.
3Underline the correct words:I must / can / should...
I mustn't / can't / shouldn't...What rules do you have at home?Free talk:clean up bedroom wash up after dinnerwash handsdo homeworkstay up latelisten to musicuse mobile phonesplay computer gamesListen to a teenager talking about life. Check the things he must or mustn’t do. 164325874√√√√√√Check the things he must or mustn’t do. 4Listen again and pay attention to the modal verbs ____________________________________
____________________________________.
2. ____________________________________
____________________________________.He can go out with his friends
at weekends.He can play music loudly before
ten o’clock at night.Listen again. What two things does he say he can do?5I can … I must … I must not …Write some things you can, must and must not do at home.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.6Examples:A: I must visit my grandparents once a
week. I mustn’t stay up late in the
evening.
B: …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?谢谢21世纪教育网（www.21cnjy.com) 中小学教育资源网站 有大把高质量资料？一线教师？一线教研员？
欢迎加入21世纪教育网教师合作团队！！月薪过万不是梦！！
详情请看：
https://www.21cnjy.com/help/help_extract.php
Module 11 Ways of Life Unit 3 Language in use
Period 1同步练习
一. 单项选择。
1.You ____ stop when the traffic light turns red.
A. can B. had better C. need D. must
2. —Mum, must I stay there all day?
—No, you____. You____ come back after lunch, if you like.
A. mustn't; can B. needn't; must
C. needn't; may D. mustn't; must
3. —Can I go to the park, Mum?
—Certainly. But you ______ be back by six o'clock.
A. can B. may C. might D. must
4. —Dad, must we wait until the light becomes green?
— Yes, I'm afraid we____. That's the traffic rule.
A. can B. may C. have to D. need
5. There's only one day to go. You_____finish your schoolwork by tomorrow.
A. can B. will C. must D. may
6. —Mum, must I wash the dishes right now?
—No, you _____.
A. needn't B. wouldn't C. mustn't D. shouldn't
7. That man_____be my English teacher. He has gone to Canada.
A. needn't B. mustn't C. can't D. should
二. 用方框中所给单词或短语的适当形式填空。
litter, wash up, smoke, passport, receive
1. If you travel abroad, you must carry a ________.
2. We can see the sign “No S ________ ” in many public (公共的) places.
3. The girl often helps her mother ________ after dinner every day.
4. I have just _______ a letter. It's from my cousin.
5. Jim is a good boy, he always puts the ________ into the waste.
三. 用can, may, must, can't, mustn't填空。
1. —________ I borrow your dictionary? —Sure. Here you are.
2. We ________ listen to our teacher carefully in class.
3. The boy looks very tall, he ________ be about 1.90 metres tall.
4. There are too many nice bags, I ________ decide which one to choose.
5. If you don't understand the exercise, you ________ ask other students, but you ________ copy others'.
四. 从方框中选择适当的句子完成对话。
Li Yang—L Bob—B
L: Morning, Bob! Where are you going for your winter holiday?
B: Morning, Li Yang! (1) ___________
L: I'm going there with my sister, too.
B: That's wonderful! (2) ___________
L: Thank you! Can you tell me any customs in England?
B: OK. (3) ___________ Fist, People in England drive on the left-hand side of the road.
L: What's the next one?
B: Second, English people can't ride their bicycles on the pavement.
L: (4) ___________
B: Third, you can't ask personal questions. For example, “How old are you?” “How much is your monthly salary (月薪)?”
L: I see, thanks!
B: You're welcome. (5) ___________
L: OK!
A. I tell you some important customs different from China.
B. You can't use your mobile phone in some trains.
C. I'll tell you more about it when you arrive in England.
D. I'm going to return to my country—England.
E. It's very important to know about other countries' customs.
F. I can show you around.
G. Anything else?
同步练习答案
二. 用方框中所给单词或短语的适当形式填空。
1. passport 2. Smoking 3. wash up 4. received 5. litter
三. 用can, may, must, can't, mustn't填空。
1. Can/May 2. must 3. may 4. can't 5. can; mustn't
四. 从方框中选择适当的句子完成对话。
1 - 5 D F A G C
