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1、 Unit 5 It must belong to Carla教学目标复习情态动词的用法复习情态动词的用法Do you remember ?1. 你会弹吉他吗？你会弹吉他吗？Can you play the guitar?Yes, I can. / No, I cant.2. 你能来参加我的派对吗？你能来参加我的派对吗？Can you come to my party?Yes, Id love to. / Sorry , I cant . I have to 3. 我可以使用你的字典吗？我可以使用你的字典吗？May I use your dictionary?Sure , here you a
2、re. / Sorry, I have to use it.4. 你可以打扫一下你的房间吗？你可以打扫一下你的房间吗？ Could your please clean your room?Sure. Ill do it right away. Sorry. I have to do my homework.Would you mind cleaning your room?No, not at all.5. 我应该做什么？我应该做什么？ What should I do?You could/ should do6. 他肯定属于他肯定属于Carla.It must belong to Carla
3、.情态动词情态动词情态动词：本身有词义，表示说话情态动词：本身有词义，表示说话人的语气或情态，但词义不完全，人的语气或情态，但词义不完全，后面跟动词原形，一起构成谓语。后面跟动词原形，一起构成谓语。并且没有人称和数的变化。并且没有人称和数的变化。1.-_ I have your name,please?-Yes,Smith.S-M-I-T-H.A. Must B. May C. Will D . Need2.-Mum,may I watch TV now?-Sure, but you_finish your homework first.A. can B. may C. must D .cou
4、ld BC3.Computers_ solve difficult problems very quickly.A must B need C should D can D4.-Whats the time now?-Its seven.Its still early.You_ worry about the time.A cant B. neednt C mustnt D may notB5.-Can you go swimming with us this afternoon?-Sorry, I cant. I _ _take care of my little sister at hom
5、e because my mother is ill.A can B may C would D have toD6.-Can you play with a yo-yo, Jim?-Yes,I_.Its easy.A must B can C need D mayB7.“Must I hand in my exercise book now?”“No, you _.”A neednt B cantC mustnt D wontA8.-May I go out to play basketball,Dad?-No,you_.You must finish your homework first
6、.A mustnt B may not C couldnt D needntA9.The magazines _to the library in two weeks.A must return B must be returnedC returnedD must be returningB考例考例Look at the boy running on the ground. Is it Davis?It _ be him. I saw him go to the teachers office just now.A. mustB. cantB.C. couldD. might (2007湖北湖
7、北黄冈黄冈)B考例考例 Even the top students in our class didnt work out the problem. So it _ be very difficult.A. needB. mustC. cantD. shouldnt (07山东滨州山东滨州)解析解析 此处此处must表示肯定的推测。表示肯定的推测。 could ,might表示可能的推测表示可能的推测B表示对某件事的确定程度，即表示推测表示对某件事的确定程度，即表示推测的时候，通常会用到情态动词的时候，通常会用到情态动词must, may, might, could, cant等。等。1.按照
8、推测的可能性来区别按照推测的可能性来区别, must的可的可2.能性最大能性最大, may次之。次之。could和和might不不表表3.示过去时态示过去时态, 只是表示推测的可能性比只是表示推测的可能性比4.较小较小,而而cant则表示否定的猜测。则表示否定的猜测。例如：例如：Its two oclock now. He must be here. 现在是两点钟。现在是两点钟。 他一定在这儿了。他一定在这儿了。He cant come back in autumn. 他不可能秋季回来。他不可能秋季回来。 The volleyball might /could be Toms or Lilys
9、 . They both like volleyball.这个排球可能是这个排球可能是Tom或或Lily的的, 他们都喜欢他们都喜欢排球。排球。： 【特别提醒特别提醒】1.must表示推测时只用于肯定句，表示表示推测时只用于肯定句，表示2.很有把握的推测，意为很有把握的推测，意为“一定一定”。例如：例如：Our teacher must be in the office because the light is on. 我们的老师一定在办公室，因为灯还亮我们的老师一定在办公室，因为灯还亮着。着。2. 表示否定推测常用表示否定推测常用cant，意为，意为“不不可可能能”。例如：例如： He ca
10、nt be at home because he has gone to Beijing.他不可能在家，因为他去了北京。他不可能在家，因为他去了北京。must 一定一定, 肯定；肯定；could 能，很可能；能，很可能；might 或许；大概或许；大概cant 不会，不会， 不可能。不可能。练习练习1. - Can you swim in the river?- No, I _.A. mustnt B. may not C. cant D. neednt 2. - May I go swimming now? - No, you _. You must finish your homework
11、 first.A. mustnt B. may not C. couldnt D. neednt CA3. - Excuse me. Where is the zoo? - Sorry, I dont know. Ask that policeman. He _ know.A. shall B. may C. need D. would 4. -_ I finish the work today? -No, you neednt.A. Must B. May C. Can D. Need 5. - Must I finish my homework now? - No, you _. You
12、may have a rest first.A. mustnt B. cant C. may not D.neednt BAD6. - Tom, where is your father? - Im not sure. He_ in his office.A. is B. may be C. maybe D. may 7. -_I visit Lucy on Sunday, Mum? -Yes, you_.A. Must；can B. May；can C. Need；need D. May； need 8. - Where is Tom? - He hasnt come to school today. I think he_ be ill.A. has to B. should C. may D. need BBChomework1.整理笔记。整理笔记。2.优化设计优化设计第第29页页“中考聚焦中考聚焦”
