广州版7年级英语下册语法-U6情态动词

1、.精讲点拨1. 情态动词 can, may和 must情态动词和不带to 的动词不定式一起构成谓语，但 ought除外。情态动词有一定的词义， 没有人称和数的变化。 它表示说话人的语气或情态，如请求、命令、愿望、能力以及可能性等。情态动词含义示例一般疑问句回答能；能够；会；可以We can buy a car tosave our time on theYes,can./road.No, can t.Can he swim?许可You can (=may) gohome now./can/could用于条件句中If he comes, he canhelp us./I couldcome ea

2、rlier,if necessary.be able to 与 can 同义，常用She willbe able to以表示 can 所不能表示的将来buy the house byYes,is(are).或完成时的概念the end of next year.No, isn t/aren t.允许、请求Excuse me,may IYes,may/can.have a glass ofNo, can t/may/mightwater?mustn t.可能，或许；用 might语气更These ideasmayseem strange to you./加不肯定.He mightget lost

3、.表祝愿May all your dreamscome true.必须，应该All the staffmustarrive at the squarebefore 9.mustmust not 意为“不可以”，We must not spit on“不许”；而 need not 才是the ground.-Yes, you must ./No,must 通常的否定回答- Must I return theyou needn t.book next week?Ex1: 请选择最佳答案1.- “ _ I borrow your dictionary?”- “ Certainly, here you

4、 are.”A. MustB. MayC. NeedD. Shall2.You _ worry about him. He will take care of himself.A. can tB. needn tC. mustn tD. couldn t3.We _ talk or sleep in the class, or Mrs. Clark will be very angry.A. don tB. haven t C. needn tD. mu stn t4. - _ you understand what I mean?- Not really.A. CanB. MayC. Mus

5、tD. Should5. -Let s go dancing tonight.- Sorry, I _. I have to go to a meeting.A. may notB. mustn tC. can tD. needn t.6. - Must I park my car behind the building?- No, you _. But you _ park it here.A. mustn t, mayB. may not, mustC. don t have to, mayD. shouldn t, must7. You _ be late for school agai

6、n next time.A. mustntB. needntC. dont have toD. dont need to8. -Must I do my homework at once?-No, you_.A. needntB. mustntC. cantD. may not2. can, may, must表猜测用法区别情态动词表示“猜测”例句表示可能性，常用于 否定句表示“不Can it be true?can可能”，那会是真的吗？疑问句表示“会吗？”It cannot be true.may表猜测，通常只用于陈述句表示“可You may be right.能，也许”你可能是对的。表猜测

7、，暗含有很大的可能性表示He must be ill. He looks somust“肯定，一定”pale.他肯定是病了。他的脸色那么苍白。Ex.2请选择最佳答案1. - I saw Johnny in the pub last night.-It _ be him. He went to L.A. and he wonk untilnextbeweekbac.A. needn tB. mustn tC. have toD. can t.2. - Where is mom now?-I m not sure. She _ be in the kitchen.A. shallB. mayC.

8、needD. must not3. -Why didn t Tracy come to school today?-She _ be sick. She didn t feel well yesterday.A. mustB. mightC. mayD. can二、课后练习一）单项选择1. - Can you speak Japanese?- Sorry, I _.A. needn tB. mustn tC. can tD. may not2. - _ I visit Lucy on Sunday, mum?- Yes, you _.A. must, canB. may, mayC. need

9、, needD. may, need3. This book _ Lucy s. Look! Her name is on the book cover.A. must beB. may beC. can t beD. mustn t be4. - _ I finish the work today?- No, you can do it tomorrow.A. MustB. MayC. CanD. Need5. Cars and buses _ stop when the traffic lights are red.A. canB. needC. mustD. may6. - Who el

10、se will come to the party besides bob and jack?-John _ come, but he isn t very sure yet.A. mayB. willC. mustD. need.7. You d better go and ask Mr. Brown. He _ know how to use the computer.A. canB. mayC. wouldD. could8. - Can you drive a car?- No, I _.A. mustn tB. needn tC. can tD. couldn t9. - May I

11、 go swimming now?- No, I _. You must finish your homework first.A. mustn tB. may beC. couldn tD. needn t10. - Must I stay at home the whole afternoon?- No, you _.A. mustn tB. can tC. may beD. neednt二）用情态动词填空（包括否定式）1. - _ you take the box to the classroom?-Yes, I _.2. _ I borrow your ruler?3. I _ loo

12、k after my little sister. She is only two years old.4. Jim _ speak French, but he _ speak a little Chinese now.5. Excuse me, _ you show me the way to the hospital?6. Children _ play on the road.7. My watch doesn t work. There _ be something wrong with it.8. We _ do something to stop factories from p

13、olluting harmful gases.9. When the traffic lights are red, you _ cross the road.10. You _ catch a bus. It s quite near.三）拓展练习1.请根据材料内容，从各题后所给的选项中选择最佳答案。2.划出文中的情态动词Everyone knows that exercise is important. We need to exercise. Doctors say it is goodfor us. It keeps our bodies strong.When the daytime

14、 comes, we must get up. This is the time for exercise. Exercise meansdoing things with the body. There are many ways to exercise. You can walk, run, swim,skate, or play ball games. Make sure you excise in the following ways: you have to likewhat you re doing. Exercise enough -but not too much. It is

15、 good to exercise twiceeach week. Thirty minutes each time is enough. Try all kinds of things until you find one,two or three sports that feel right for you.Exercise can be fun. Friends can exercise together at fitness center, or they can playsports together. How do you exercise?1. In the passage th

16、e writer tells us that we all need to_.A. drinkB. relaxC. exerciseD. work2.Which of the following sports can t we find in the passage?A. FishingB. RunningC. SwimmingD. Walking3. What does exercise mean?A. It means doing things with the bodyB. It means studyingC. It means doing lessons.D. It means pl

17、aying4. What can exercise do to the body?A. It can make the body weakB. It can make us sleep more.C. It can make the body sickD. It can make the body healthy5. The words“ fitness center” in the passage mean_A. 减肥中心B.健身中心C.购物中心D.医疗中心2. （选做）For 99% of human history, people took their food from the wor

18、ld around them. Theyate all that they could find, and then moved on. Then around 10,000 years ago, about 1%of human history, people learned to farm the land.The kind of food we eat depends on which part of the world we live in, or which partof our country we live in. For example, in the south of Chi

19、na they eat rice, but in the norththey eat noodles. In European countries near the sea, people eat a lot of fish. In centralEurope, away from the sea, people don t eat so much fish, but they eat more meat. Forexample, in Germany and Poland, there are hundreds of different kinds of sausages.In North

20、America, Australia, and Europe, people eat with knives and forks. In China,people eat with chopsticks. In parts of India and the Middle East, people use their fingersto pick up food.Nowadays it is possible to transport food easily from one part of the world to another.We can eat whatever we like, at

21、 any time of the year. In Britain, bananas come from Africa;rice comes from India or the U.S.A.; strawberries come from Chile or Spain. Food is a verybig business. But people in poor countries are still hungry while people in rich countrieseat too much.() 1. 10,000 years ago, people _ .A. learned to farm the landB. cooked different kinds of foodC. couldn t find food around themD. transported food from one country to.another() 2.In central Europe, away from the sea, people eat _ .A. more noodlesB. much fishC. more meatD .much rice() 3.In North Amer