1、Revision of modal verbswComplete the sentences from the passage.1.They _ go anywhere they wished.2.You _ go on those ships.3.There _ be any other foreigners.4.We just _ show our passports.5.We _ see the sun setting behind the white pagoda.couldshouldntwonthad tocouldIndicatean ability to do somethin
2、guse to give advicemake a prediction about the futurethe past of mustthe permission to do somethingcould(1)shouldntwonthad tocould(5)Modal VerbCorrect the mistakes and say why.John shoulds go to school on time.At that time we thought we musted hand in our paper.You must to finish your homework in ti
3、me.We dont can be there tomorrow.They should may do that.shouldmustcantshould/may情态动词的语法特征1）情态动词表示期待或估计某事的发生，或说话者对某一动作或状态的态度。带有主观或情感意味。2）情态动词 除ought,have和be able 外，后面只能接不带to 的不定式。3）情态动 除have和be able 外，没有人称，数的变化，即情态动词第三人称单数不加-s。4）情态动词在构成否定形式和疑问形式时，遵循助动词的规则 Two eyes can see more than one.I am so stron
4、g that I can lift this stone.He said that Jack couldnt finish his work in such a short time.Could you follow my step?He is only four,but he is able to read.She was able to do it without my help.Will you be able to come to my party tomorrow?表能力can couldbe able to 有时态变化 You can go now.I wont let you d
5、own.Could I say it in Chinese?May I know your name?Would you mind closing the door?Shall we dance?Might I have a word with you?语气强弱表许可,征询意见can,willcould/may/would/shall/mightw There must be a mistake.You may walk ten miles without seeing a house.He might get there on time.It can be true.In those day
6、s few workers could support their families.表可能性(猜测)must may,might,can,could肯定句语气强弱 She cant be serious.We couldnt have done better.People may not pick flowers in this garden.She was afraid they might not like the idea.语气强弱表不可能(猜测)cant,couldntmay not,might not否定句 We mustnt waste our time.They shouldn
7、t left so soon.Youd better not disturb him.mustnt,shouldnthad better not表禁止 You should do what your parents tell you.If you cant finish the book by then,you must come and renew it.This is a lovely party,but we have to go because of the baby-sister.The bridge was not wide enough so that somebody had
8、to give way.should,musthave to表义务(应该)有时态变化词义Modals can,could,be able tocan,will,may,could,would,shall,mightmust,may,might,can,couldmustnt,shouldnt,had better notshould,must,have to能力,能够许可,征询意见猜测，可能性禁止义务,应该1.can 有时也用于肯定句中表示推测,表示：表示理论上的可能性(即从理论上看是可能的，但实际未必会发生)：即使是有经验的教师也可能出错。Even experienced teachers
9、can make mistakes.用于含有only等表示限制的肯定句：“门外是谁？”“只能是邮递员。”“Who is that at the door?”“It can only be the postman.”后接“be(get,seem,become)+形容词”，表示“有时会”、“时常会”等：It can get very hot here.这里有时会很热。She can be very unpleasant.她有时很令人讨厌。shall将要、会(用于第一人称肯定句中及否定句中，单纯表示未来的动作)（用于一、三人称疑问句，征求对方意见）好吗?必须、可以，应该(表许诺、命令、警告、规定，决
10、心,常用于陈述句的第二三人称中)1)“Whatever you want,you shall have it,”said Fairy.2)She shall do as she is told.3)That day when you will succeed shall come.4)Each competitor shall wear a number.wshould1.应该、应当（表义务、责任、劝告、建议时）本该（含有责备意味）2.竟然、居然（用于表示惊奇、遗憾等的从句中，多在that从句中）You cant imagine that a well-behaved gentleman _s
11、o rude to a lady.It is pity that she _(lose)all her money.should beshould have lost3.按理该；照说应该；估计（表示可能性、揣测，推测、期望等）1)The report is written after carefulinvestigation,so it _be reliable.2)They _(arrive)in Beijing by this time.should have arrivedshould几个情态动词常考的句型1)may/might(just)as well “不妨，最好”，与had bet
12、ter相近；2)cannot/canttoo “越越好，怎么也不过分”。历年高考题1.-Mum,Ive been studying English since 8 oclock._ I go out and play with Tom for a while?-No,Im afraid not.Besides,its raining outside now.A.CantB.WouldntC.May notD.Wont2.I _ pay Tracy a visit,but Im not sure whether I will have time this Sunday.A.shouldB.mig
13、htC.wouldD.could3.Children under 12 years of age in that country _ be under adult supervision when in a public library.A.mustB.may C.canD.need4.You _ be tired youve only been working for an hour.A.must notB.wont C.cant D.may not5.You might just well tell the manufacturer that male customers _ not li
14、ke the design of the furniture.A.mustB.shall C.mayD.need6.A left-luggage office is a place where bags _ be left for a short time,especially at a railway station.A.should B.can C.must D.will7.-I havent got the reference book yet,but Ill have a test on the subject next month.-Dont worry.You _ have it by Friday.A.could B.shallC.must D.mayw
