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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 VerbCorrectthemistakesandsaywhy.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 time.We
3、 dont can be there tomorrow.They should may do that.shouldmustcantshould/may 情态动词的语法特征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）情态动词表示期待或估计某事的发生，或说话者对 某一动作或状态的某一动作或状态的态度态度。带有主观或。带有主观或情感情感意味。意味。2）情态动词情态动词 除除ought,have和和be able 外，后面外，后面 只能接不带只能接不带to 的不定式。的不定式。3）情态动情态动 除除have和和be able 外，没有人称，数的外，没有人称，数的 变化，即情态
4、动词第三人称单数不加变化，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 动词的规则动词的规则Two eyes can see more than one.I am so strong 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
5、do it without my help.Will you be able to come to my party tomorrow?表能力表能力can couldbe able to 有时态变化有时态变化You can go now.I wont let you down.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 弱表许可表许可,征征询意见询意见can,willcould/may/
6、would/shall/mightwThere 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 days few workers could support their families.表可能性表可能性(猜测猜测)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 f
7、lowers in this garden.She was afraid they might not like the idea.语气强 弱表不可能表不可能(猜测猜测)cant,couldntmay not,might not否定句否定句We mustnt waste our time.They shouldnt left so soon.Youd better not disturb him.mustnt,shouldnthad better not表禁止表禁止You should do what your parents tell you.If you cant finish the b
8、ook 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 to give way.should,musthave to表义务表义务(应该应该)有时态变化词义词义Modalscan,could,be able tocan,will,may,could,would,shall,mightmust,may,might,can,couldmust
9、nt,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有时也用于肯定句中表示推测,表示：表示：表示理论上的可能性表示理论上的可能性(即从理论上看是可能的，但实即从理论上看是可能的，但实际未必会发生际未必会发生)：即使是有经验的教师也可能出错。即使是有经验的教师也可能出错。Evenexperiencedteacherscanmakemistakes.用于含有用于含有only等表示限制的肯定句：等表示限制的肯定句：“门外是谁？门外是谁？”“只能是邮递员。只能是邮递员。”“Who
10、isthatatthedoor?”“Itcanonlybethepostman.”后接后接“be(get,seem,become)+形容词形容词”，表示，表示“有时有时会会”、“时常会时常会”等：等：Itcangetveryhothere.这里有时会很热。这里有时会很热。Shecanbeveryunpleasant.她有时很令人讨厌。她有时很令人讨厌。shall将要、会将要、会(用于第一人称肯定句中及否定句中，用于第一人称肯定句中及否定句中，单纯表示未来的动作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（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
11、、警告、规定，决心,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、应当应该、应当（表义务、责任、劝告、建议时）（表义务、责任、劝告、建议时）本该本该（含有责备意味）（含有责备意味）2.竟然、居然竟然、居然（用于表示惊奇、遗憾等的从句（用于表示惊奇、遗憾等的从句中，多在
12、中，多在that从句中）从句中）You cant imagine that a well-behaved gentleman _so 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，推按理该；照说应该；估计（表示可能性、揣测，推测、期望等）测、期望等）1)The report is written after carefulinvestigation,so it _be reliable.2)They _(arrive)in Beiji
13、ng by this time.should have arrivedshould 几个情态动词常考的句型几个情态动词常考的句型1)may/might(just)as well “不妨，最好不妨，最好”，与，与had better相近；相近；2)cannot/canttoo “越越越好，怎么也不过分越好，怎么也不过分”。历年高考题历年高考题 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 o
14、utside 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.mightC.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
15、 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 like 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