外研英语八上Revision module B情态动词复习课件

课件42张PPT。 外研版八(上)英语Revision B 情态动词Modal verbs情态动词的特点：有词义；不单独使用，后跟动词原形；没有人称和数的变化、词性的变化(s)Make sentences with “can”.What can/can’t you do in school’s Computer’s Room?Can/could的用法1.I _______ speak three languages.(表能力）can2._____ I borrow the book from the library?(允许)Can3.He ________be ill.He is playing chess with Tom.(表推测）Can’t4.I __________swim when I was eight.(过去能力）Could5.______you tell me the way to the nearest post office?(语气委婉)Could请画出can/could 用法思维导图can1.表能力 “能，会”2.表允许 “可以”3.表否定推测 “不可能”could1.表过去的能力 “能，会”2.表示委婉客气的语气 Weather Forecast : Pairwork(may,might)What’s the weather like in Beijing?Can you guess what he wants to say?May I come in?What did he say?May I ask you a question?may/might的用法1.__________ I borrow your bike? (表允许）May/Might2.She _________be still waiting for us. (表推测，可能性)may/might3.might是may的过去式，也可表示婉转的语气mustmustn’t用法：You must wear your school uniform.It’s so dirty and must be washed.Guess what the Ss who are on duty say to the boy.What is going to happen?They _______________again.must be late The teacher ______________.must be angryMust 用法1.We ________do everything step by step. (必须)must2.You _______go across the road until the lights turn green. (禁止)mustn’t3.---Must I clean the room now?
---No,you _______________________. (不必)needn’t./don’t have to.4.This book _______be Kitty’s. Only she likes to read this kind of books.（一定）must请画出Must 用法思维导图must1.必须2.禁止3.否定回答（不必）needn’t/don’t have to4.肯定推测，“一定” （用于肯定句）should 、shouldn’t用法：1.“应该”，表示要求和命令2.表示劝告、建议We should obey the traffic rules. You should hand in your homework on time.4.对于这种小事，你不应该感到这么不高兴。 You shouldn’t feel so unhappy over such little things.(“不应该“）Practice 1：______________we do anything to help them?Can/ShouldSomething______________be done to help the children in poor areas.must/need toWe_________study harder in such good studying environment.shouldPractice 2：Sand stormTalk about how to protect the environment with modal verbs.
(can/could/may/might/must/should/shouldn’t/need…)Work in pairs?environmental?protection?环境保护 environmentally-friendly?环保的
Pollute?污染(动词)?
Pollution?污染(名词)?
?垃圾:?rubbish,?garbage,?trash,?waste,?litter?
?处理:??burn,?bury?(landfill垃圾场)? dump倾倒 recycle?回收
?plastic?bags塑袋,?
drinking?cans饮料罐
throwaway?可丢弃的
1. It's our duty to save/reduce wate.
2. As we know , water is very important to man.
3. live without water.
4. But some people don't care about it .
5. Many rivers and lakes are seriously polluted.6. Something is done to stop the pollution.7. It’s our duty to protect our environment。8. It is very important to take care of our environment9. throw litter onto the ground10. spit in a public place/ cut down the trees11. plant more flowers and trees。12. pick up some rubbish and throw it into a dustbin13.We plant more and more trees in order to live better and more healthy in the future.14.It's everyone's duty to love and protect the environmentPractice2：(Pairwork)
Fire Escape .
In case of a fire,what can/should/mustn’t…
we do to save our lives?
liftDrop to the ground and roll. cover … wet clotheslook out for wet towel ,cover…
keep yourself from breathing
in the smoke.
Being near the ground makes
it easier to breathe. firefighter "NO" to elevators. lift "NO" to elevators. Drop to the ground and roll. cover … wet clotheslook out for wet towel ,cover…
keep yourself from breathing in the smoke.
Being near the ground makes
it easier to breathe. firefighter Asking the outside world for help be familiar with your surroundings.
keep calm at all times. Call the fire department and
wait for help to arrive. Using a fire escape to "escape"Call the fire department and
wait for help to arrive.Using a fire escape to "escape"be familiar with your surroundings.
keep calm at all times.Asking the outside world for help"NO" to jumping out of buildings. Jump down
fire fighting equipment消防设备 Using a rope to climb downneed的用法1. 需要，要求2.不必 You needn’t meet him unless you would like to.What do I need to do?3.---“Need you go yet?” ---“Yes,I must./No,I needn’t.”What have you got about
modal verbs?情态动词cancan’t不可能可以could能，会过去的能力needn’t不必mustn’t肯定推测“一定”委婉语气may必须must委婉语气可能might可以可能需要need否定回答needn’t/don’t have to肯定回答must禁止Let’s have a competition1．—Who is the man over there? Is it Mr. Li??
— No, it ______ be him. Mr. Li is much taller.
A. mustn’t ?B. may no C. can’t ? D. needn’t
2．—Must I go with them tomorrow？
— No，you ______.
A. mustn't? ? B. shouldn't? C. needn't? D. can't
3.—______ I take some photos in the hall? — No, you___.
A. Can, needn’t? B. Must, mustn’t C. Could, won’t D. May, mustn’t
4．—Dad, must I finish my homework today?
—No, you ________. You may do it tomorrow.
A. needn’t B. mustn’t C. don’t D. won’t
5．—The lake is said to be dry. Is that true?
—It _______.Look, some kids are swimming in it.
A. must be true B. can’t be true C. may not be true6．—What is your mother going to do this Saturday?
—I’m not sure. She _____ go to see my grandmother.
A. can B. must C. may
7．—Susan has bought a large house with a swimming pool.
—It _____ be very expensive. I never even dream about it.
A. must B. might C. can’t D. shouldn’t
8．—Listen! Is Professor Johnson giving a report in the hall?
—No, it be him. He has gone to Japan.
A. needn’t B. may not C. mustn’t D. can’t
9．—Let’s go to the West Hill Park by taxi.
—Oh, it is not far away from here. We _______take a taxi.
A. couldn’t B. mustn’t C. needn’t D. can’t
10．—Can you play the piano? —Yes, I _______. I often practice it on weekends.
A. needn’t B. need C. can’t D. can 11.—Do we have to finish our homework this afternoon?
—Yes, you ________.
A. must B. can C. may D. need
12. —Must I be in hospital for a week， Doctor?? ?
—No， you ?????. You can go back home tomorrow.?
A.mustn’t??????? B. needn’t??? C. must?
13. The desk is not dirty. You _______clean it.
A. mustn’t B. shouldn’t C. needn’t D. can’t
14. —May I watch TV for a while？
—No, you _______. You have to finish your homework first.
A. shouldn’t B. needn’t C. mustn’t D. won’t
15.—Is Jessica giving us a speech this evening?
—No, it ________be her. She________ to Japan.
A. mustn’t; has gone B. mustn’t ;has been
C. can’t ;has gone D. can’t ;has been16. It’s the library! So you________ know shouting is not allowed here.
A. can B. must C. need D. may
17. Boys and girls, don’t forget your report . It ______ today.
can’t finish B. can’t be finished
C. should finish D. should be finished
18.—Mr Smith must have been to your home this morning.
—No, he ______ ,because he didn’t know my address.
A. couldn’t B. can’t C. mustn’t D. may not
19. —Must I mop up the window now?
—No, you________.
A.needn’t B. can’t C. shouldn’t D. mustn’t
20. —Is Lucy knocking at the door?
—No. It ________ be Lucy. She is in Japan now.
A. needn’t B. must C. can’tThat's all.
Thank you.