Module4 Rules and suggestions Unit3 Language in use 教学课件

课件40张PPT。Unit 3Language in useModule 4 Rules and suggestions1. To summarise and consolidate the use of modal verbs
2. To know more rules of eco-tourism情态动词Are you familiar with these sentences? They are all from this module.Observe1. You must be careful of falling stones.
2. You mustn’t walk too close to the edge of the hill path because you might fall and hurt yourselves.
3. You should always wear proper clothes.
4. Bears might think our rubbish is food.
5. — Can we go rock climbing?
— No, you can’t.6. You mustn’t go off on your own.
7. You may need some water.
8. We should hang the food in a tree tonight.
9. They can smell food from a long way away.
10. Bears might think our rubbish is food.
11.No one can run faster in the forest than a bear.
12. You mustn’t make any sudden moves or make a sound. And above all, you mustn’t run.1. You ________ be careful of falling stones.
2. You ________ (not) walk too close to the edge of the hill path because you _______ fall and hurt yourselves.
3. You ________ always wear proper clothes.
4. Bears ________ think our rubbish is food.
5. — ______ we go rock climbing?
— No, you _______(not).
6. You ________ (not) go off on your own.mustmustn’tmightshouldmightCan can’tmustn’tgo
Ready?7. You ________ need some water.
8. We ________ hang the food in a tree tonight.
9. They _______ smell food from a long way away.
10. Bears ________ think our rubbish is food.
11.No one ________ run faster in the forest than a bear.
12. You ________ (not) make any sudden moves or make a sound. And above all, you _________ (not) run.mayshouldcanmightcan mustn’t mustn’t以上我们已经通过归纳总结和练习对本课的语法内容有了一定的了解, 下面就让我们根据之前练习的考察情况进一步选择讲解该语法项的重难点。语法讲解情态动词本身有一定的意义，但不能独立作谓语，只能与其后的动词原形一起构成谓语，表示说话人的情绪、态度或语气，用来表达建议、请求、可能或意愿等。情态动词没有人称和数的变化，情态动词后必须跟动词原形。常见的情态动词有：can, could, may, might, must, need, shall, will, should, would。情态动词Can you lift this heavy box? (体力)
Mary can speak three languages. (知识)
Can you skate? (技能) can, could此时可用be able to代替。can只有一般 现在时和一般过去式; 而be able to 则有 更多的时态。①表示能力(体力, 知识, 技能), 常用情态 动词can和could表达。如：I’ll not be able to come this afternoon. (一般将来时)

He was able to go to the party yesterday evening in spite of the heavy rain. 当表示“经过努力才得以做成功某事”时用be able to, 不能用can。如：—Can I go now?
—Yes, you can. / No, you can’t.
—Could I come to see you tomorrow? —Yes, you can. (No, I’m afraid not.) 此时可与may互换。在疑问句中还可用could, might代替，但could, might并不表示过去式，只是语气更委婉。它们不能用于肯定句和答语中。如：②表示请求和允许。如：They’ve changed the timetable, so we can go by bus instead.
This hall can hold 500 people at least. ③表示客观可能性(客观原因形成的能力)。如： Can this be true?
This can’t be done by him.
How can this be true? ④表示推测 (惊讶、怀疑、不相信的态度) ，用于疑问句、否定句和感叹句中。—Might / May I smoke in this room? —No, you mustn’t.
—May / Might I take this book out of the room? —Yes, you can. (No, you can’t /mustn’t. ) may, might用May I ...？征徇对方许可时比较正式和
客气，而用Can I ...？在口语中更常见。①表示请求和允许。might比may语气更委婉，而不是过去式。否定回答时可用can’t 或mustn’t，表示“不可以，禁止”。如： May you succeed!

He may / might be very busy now.
Your mother may / might not know
the truth. ②用于祈使句，表示祝愿。如：③表示推测、可能性 (不用于疑问句)。 might不是过去式，它所表示的可能性比may小。如： You must come in time.

—Must we hand in our exercise books
today? —Yes, you must. —No, you don’t have to / you needn’t. must, have to在回答引出的问句时, 如果是否定的，不能用mustn’t (禁止, 不准)，而用needn’t, don’t have to (不必)。①表示命令、禁止、不得不。如： His play isn’t interesting, I really must
go now.
I had to work when I was your age. You’re Tom’s good friend, so you must know what he likes best.
Your mother must be waiting for you now. ②must是说话人的主观看法，而have to则强调客观需要。must只有一般现在时，have to 有更多的时态形式。如：③表示推测、可能性（只用于肯定的陈述句)。如： You shall fail if you don’t work hard.
(警告) He shall have the book when I finish it. (允诺) He shall be punished. (威胁) shall, should②shall 用于第二、三人称，表示说话人给对方的命令、警告、允诺或威胁。① shall 用于第一人称，征求对方的意见。如：What shall we do this evening?Will / Would you pass me the ball, please?
I will never do that again. They asked him if he would go abroad.will, would②表示意志、愿望和决心。如：①表示请求、建议等，would更委婉。如: During the vacation, he would visit me
every other day.
The wound would not heal.

It would be about ten o’clock when she
left home. ③would表示过去反复发生的动作或某种倾向。would表示过去习惯时比used to 正式，且没有“现已无此习惯”的含义。如：④表示估计和猜想。如： I should help her because she is in trouble.
You ought to take care of the baby. You should / ought to go to class right away.
Should I open the window? should, ought to①should, ought to表示“应该”，ought to表示义务或责任，比should语气重。②表示劝告、建议和命令。should, ought to可通用，但在疑问句中常用should。③表示推测 should/ ought to 客观推测
must 主观推测 He must be home by now.
(断定他已到家)
He ought to/should be home by now.
(不太肯定)
This is where the oil must be. (直爽)
This is where the oil ought to/should be.
(含蓄)1. 你必须马上回家。
You must go home now.
2. 他一定吃过什么东西了。
He must have eaten something.
3. 吃饭之前不能吃零食。
You mustn’t eat snacks before meals.Practice4. 我可以问你的名字吗？
May I ask your name?
5. 你能用英语说吗？
Can you speak in English?
6. 我们应该准时去上学。
We should go to school on time.
7. 你没有必要那么做。
You needn’t do that.以下部分为课本练习，供老师在对答案时选择使用。Match the signs with the rules and warning.1P30abcdefpic1 No smoking.
2 No eating or drinking.
3 Children crossing.
4 Danger! Be careful of
falling rocks.
5 Children should be
taken care of by
parents.
6 Do not drink and drive.Read the list of rules and write sentences using must, mustn’t, should or shouldn’t.2P31Possible answers:
You must check in at the main gate when you come to the centre.
You should climb with someone/ wear the correct climbing shoes/ wear comfortable clothes.
You mustn’t climb without a rope.
You shouldn’t listen to personal music players while climbing.Work in pairs. Explain why the rules in Activity 2 are important.3P31— Why must you check in when you come to the centre?
— Because they want to know who is there.1 Why must you climb with someone?Because you can ask for help if you meet some problems.2 Why must you wear comfortable clothes?Because comfortable clothes can make you less tired.3 Why mustn’t you climb without a rope?Because it is dangerous for you.4 Why shouldn’t you listen to music while climbing?Because you can hear what is going on around you. People are very (1) _______ about the conditions of the ancient forests of Canada and want to save them. Many visitors to the forests use knives to cut their names into the trees, some of which are hundreds of years old. (2) ________ there are litter bins, people still throw rubbish into the (3) ________ and this causes plants and fish to die.
People from local villages have helped clean up the forests. We hope (4) _______ will play their part in (5) ________ Canada’s forests clean too! although keep stream tourist worryworriedAlthough streamtouristskeepingComplete the passage with the correct form of the words in the box.4P31You should ___________________________.
You shouldn’t ________________________.
You must ___________________________.
You mustn’t _________________________.Now write possible rules for visitors to the forests.throw rubbish into the litter bins throw rubbish into the stream help save the ancient forests use knives to cut your names into the trees1. Come and visit me ________ you have time.
2. The wall is made of _______.
3. The path to the top is not very ________.
4. Remember to take a _______ with you to sleep in, because it might rain.
5. He lifted up the _______ and pointed it at the bear.
6. There was a ________ noise in the woods and we all stopped moving.
7. Birds use small _______ and leaves to make a home. gun smooth sticks stone sudden tent wheneverwheneverstonesmoothtent gunsuddensticksComplete the sentences with the words in the box.5P32Read the passage and answer the questions.6P321. What does Zhang Wenpeng try to say with his drawing?
2. What does Zhou Zhiyun try to say with his painting?He tries to say that people must wake up to the fact that pollution is causing damage to the progress we’ve made.He tries to say that people must not waste electricity.3. What does the school suggest the students should do?
4. How can a school become a “green school”？The school suggests that the students should pass on what they have learnt in school to their parents and neighbours.A school must include education about the environment as part of the timetable to become a “green school”.Listen and complete the sentences.7P331. The first thing you have to do is to ____________ carefully.
2. Think about where ___________ and whether there are ____________.
3. You should only take marked _______________.
4. Make sure you know where _________ for lunch.
5. Don’t forget to tell people to ___________ for the people.
6. don’t walk when it is ___________ or in _________.
7. You must not try out a __________ with a group.Summary单项选择。
1. Students in our school _______ know
shouting is not allowed in the library.
A. can B. may
C. must D. need
2. You ______ drive your car so fast. It’s very dangerous.
A. wouldn’t B. shouldn’t
C. couldn’t D. mightn’t3. _______ I see your ID card, sir? We have to check your information.
A. May B. Must C. Should D. Need
4. — Where are you going this month?
— We _______ go to Xiamen, but we’re
not sure.
A. needn’t B. must C. might D. mustn’t
5. It’s rather hot in the room. You’d better
________ the windows or the door.
A. close B. not to close
C. don’t close D. not close 6. — Where’s Tim?
— I’m not sure. He _____ in the school library.
A. maybe B. must be
C. may be D. will be
7. You made the same mistakes again. You _____ be more careful next time.
A. can B. may C. will D. should 8. I have my own room in my house, so I _____ do what I want in it.
A. can B. have to
C. need to D. must
9. The man in the office _____ be Mr Black because he phoned me from London just now.
A. mustn’t B. can’t
C. may not D. needn’t 10. According to the air traffic rules, you _____ turn off your mobile phone before boarding.
A. could B. would
C. should D. might
11. — Good morning. I’ve got an appointment with Dr Lee.
— Ah, good morning. You _____ be Mrs Jones. A. might B. must
C. would D. canHomework1. Finish the exercises in Learning English.
2. Preview the new words and expressions in Module 5.