新概念英语第一册Lesson127课件(共34张PPT).ppt
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- 新概念 英语 一册 Lesson127 课件 34 PPT
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1、Lesson 127A famous actresssnow heavily stay at homemusthave to It is snowing very heavily,so I have to stay at home.I _ take a taxi,because I dont want to go there by bus.mustI _ take a taxi,because I cant get a bus.have toReview:have to 不得不,必须must必须has tohad tohave to 强调客观的需要,含有“不得不,被迫”的意思。而must 强调
2、主观的看法,即主观上的必要,有责任,有义务去做。have to 有人称,时态的变化,而must没有。1.Mum isnt at home,so I have to look after my sister.2.We must help each other.3.We must study hard我们一定要努力学习。4.He had to go on foot because there was something wrong with his car.因为他的汽车坏了,他不得不走着去。have had towill have toReview:否定式的意义不同:must mustnt 意为“
3、一定不要”、“不允许”have to dont have to 意为“不必”(=neednt)。比较:You mustnt tell him about it.你一定不要告诉他这件事。(这可能是秘密)You neednt tell him about it.你不必告诉他这件事。(他可能知道了)I think she is Chinese.I dont think so.She cant be Chinese.She must be Korean.What nationality is she?Q:What nationality is he?I think he is French.I don
4、t think so.He cant be French.He must be EnglandGuess!How old are they?I think she is 40 years old.I dont think so.She cant be40.She must be 35 years old.I think he is 25 years old.I dont think so.He cant be25.He must be 35 years old.Guess:What are they doing?I think they are jumping.I dont think so.
5、They cant be jumping.They must be dancing.I think they are eating.I dont think so.They cant be eating.They must be talking.What are their job?I think he is a cook.I dont think so.He _ a cook.He _ a baker.cant bemust beI think he is a firefighter.I dont think so.He _a firefighter.He _ a worker.I thin
6、k he is.I dont.He _ a.He _ a hairdresser.Pairwork!Guess your partner:How old is your father/mother?Whats your fathers/mothers job?Whats he/she doing now?Do it like this:He must be.She must be doing.Open your book!Try to finish Part A&Part B on Page 260.Lets listen to the tape and repeat.probably:或许,
7、表示推测不如must be的语气肯定。Lets summarize.1.情态动词+原形,表示对_推测。例:He must be a teacher.他一定是一名老师。(系表)肯定的推断:否定的推断:(而不是mustnt be)Summary现在或将来的情况进行must be 肯定是cant be 不可能是2.情态动词+be doing,表对:_推测。n 例:He must be having a lot of money.n他一定有很多钱。n他们一定正在睡觉吧。n They must be sleeping.n Jim may be playing the basketball.n吉姆可能正在
8、打篮球。正在进行的情况进行3.情态动词+have done,表示对过去的情况进行推测。(明天的课程中会再进行学习。)例:It must have rained yesterday.昨天一定下雨了。I cant have been late yesterday.我昨天不可能迟到。She could have phoned you last night.她昨晚应该给你打电话了。Translation:It must be cold outside.外面肯定很冷。They must be thirsty.他们肯定很渴。He cant be Mr.Read.他不可能是里德先生。She cant be
9、late.她不可能迟到。Translation:他不可能是老师,他肯定是牙医。He cant be a teacher.He must be a dentist.她不可能是日本人,她肯定是韩国人。She cant be Japanese.She must be Korean.它不可能便宜,肯定很贵。It cant be cheap.It must be expensive.-门铃响了。肯定是Bobby。-Theres the doorbell.It must be Bobbby.-不可能是Bobby,他去电影院了。-It cant be Bobby.Hes gone to the cinema
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