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1、can and could may and might will and would shall and should must and cant ks5u精品课件HecantakepartintheOlympics.Hemaywinthegoldenmedal.Towinit,hemustrunfaster.ks5u精品课件HecanHemay/mightHemustks5u精品课件Can Couldks5u精品课件Sohecancarryheavybooks.Hecouldntopenthedoorbyhimself. Couldyouopenthedoor,please? ability
2、 abilityrequestks5u精品课件1)表示能力（表示能力（ability），），指有能力做某事，意为指有能力做某事，意为“能够能够”。例如：。例如：注注意意：表表示示现现在在，将将来来“能能够够”可可用用beableto替替换换。表表示示过过去去“能够能够”并成功了只能用并成功了只能用was/wereableto,不能不能用用could。例。例如如Mygrandmaisovereighty,butshecan/isabletoreadwithoutglasses.Wecan/willbeabletotalkaboutthematterlater.I talked with her
3、for a long time, and at last I wasabletomakeherbelieveme.(不能不能用用could)can和和could：ks5u精品课件2)表示请求表示请求（request）或（）或（permission）。）。意为意为“可否可否”、“可以可以”。Could比比can更有礼貌，在此不是更有礼貌，在此不是can的过去式。的过去式。Canyouwaitamomentplease?Liz,canyoudomeafavor?Excuseme,couldyoutellmethewaytothestation?Iwonderifyoucouldhelpme.(re
4、quest)ks5u精品课件-CouldIuseyourphone?-Yes,ofcourse.Youcan.DoyouthinkIcouldborrowyourbike?(permission)3)表示可能性表示可能性（possibility）a.can表表示示泛泛指指的的“可可能能”，并并非非说说话话者者主主观认为的可能性，即并非说话者的主观猜测。观认为的可能性，即并非说话者的主观猜测。Accidentcanhappentoanydrunkendriver.ks5u精品课件b.表表示示说说话话者者主主观观猜猜测测，只只能能用用与与否否定定句句或疑问句中。例如：或疑问句中。例如：It can
5、t be my father. He is now inEngland.-Canitraintomorrow?-No,itcant.ks5u精品课件may mightks5u精品课件He may be in his office.=( perhaps he is in his office.)He might be having lunch.=( perhaps he is having lunch.)ks5u精品课件may和和might：1）表表示示可可能能性性（possibility）,用用于于对对现现在在，过过去去或或将将来来的的推推测测，暗暗示示不不确确定定。might不不是是may的
6、的过过去去式式，它它所所表表示的可能性示的可能性比比may小，含较多的怀疑。小，含较多的怀疑。Hemaybeverybusynow.(可能性较大可能性较大)Hemightbeverybusynow.(可能性较小可能性较小)ks5u精品课件2）表表示示许许可可（permission），表表示示允允许许别别人人做某事，做某事，也可征求对方的许可。也可征求对方的许可。Hemaygonow.Wemaykeepthebookfortwoweeks.3）用于祈使句，表示祝愿。用于祈使句，表示祝愿。Mayyousucceed!Mayyouhaveanicetrip!ks5u精品课件1. They (can/
7、might) _be away for the weekend but Im not sure.2. You (may/might) _leave now if you wish.3. (could/may) _you open the window a bit, please?4. He (can/could) _be from America, judging by his accent.5. (may/can) _you swim?6. Listen, please. You (may not/might not) _ speak during this exam. May, might
8、, can, couldmightmaycouldcouldCan may not表示猜测表示许可表示请求表示猜测表示能力表示不允许ks5u精品课件7. They (can not/may not) _ still be out, the light is on in the house.8. You (couldnt/might not) _ smoke on the bus.9. With luck, tomorrow (can/could) _be a cooler day.10. You (can/might) _ be right, but Im going back to chec
9、k it.May, might, can, couldcan notcouldntcouldmight表示猜测(不可能)表示许可表示猜测表示猜测ks5u精品课件will和和would：1）表示意愿）表示意愿表表 示示 愿愿 意意 做做 或或 主主 动动 提提 出出 做做 ， 如如 意意 志志 ,愿愿 望望 或或 决决 心心Thatbaglooksheavy,Illhelpyouwithit.(offeringtodosth)-YouknowthatbookIlentyou.CanIhaveitbackifyouvefinishedwithit?-Ofcourse.Illgiveittoyout
10、hisafternoon.(agreement)Thanksforlendingmethemoney,IllpayyoubackonFriday.(promise)ks5u精品课件2）表示习惯）表示习惯(habit,custom)Thisoldmanisstrange.Hewillsitforhourswithoutsayinganything.WewouldsitaroundGrandpaaftersupper,listeningtohisstories.3）表表示示请请求求（request）,用用于于第第二二人人称称,would比比will更委婉。更委婉。例如：例如：Willyoucome
11、thisway,please?Wouldyouopenthewindow?ks5u精品课件shall和和should：1）shall的用法的用法a.shall在在疑疑问问句句中中用用于于第第一一，第第三三人人称称，表示征求对方的意见。表示征求对方的意见。Shallweputoffthesportsmeetinguntilnextmonth?ShallTomgotherewithmetomorrow?ks5u精品课件b.shall用于第二，第三人称，表示说话人给对方用于第二，第三人称，表示说话人给对方的命令，警告，允诺或威胁。的命令，警告，允诺或威胁。Youshallfailifyoudontw
12、orkharder.（警告）警告）HeshallhavethebookwhenIfinishreadingit.(允诺允诺)Heshallbepunished.(威胁威胁)ks5u精品课件a.should表示劝告、建议、命令。表示劝告、建议、命令。Youshouldgotoclassrightaway.b.should表表示示期期待待，用用于于表表达达合合理理推推断断（prediction，意意为为“应应该该”），或或明明显显的的结结果果（意意为为“可可能能”）且所期待的事几乎是事实。）且所期待的事几乎是事实。It is three oclock, the football game shou
13、ld beginnow.Marytookdancinglessonsforyears,sheshouldbeanexcellentdancer.2)should的用法的用法ks5u精品课件1. We _ smoke here, because the worker is carrying some petrol.2. It is dangerous. You _ leave the room immediately.3. He _ go hiking with friends at weekends when young.4. Write to me when you get home. -I
14、 _.5. -Need I hand in my exercise book at once? -Yes, you_.6. You have been working all day. You _ be very tired.7. It is a long time since we met last time. You _ come and see us more often.8. Why dont you try on this dress? It _ look nice on you.will, would, shall, should, must:mustntshouldwouldwi
15、llmustmustshouldwill表示禁止,不许可表示建议,命令表示过去重复表示意愿表示必须表示肯定猜测表示建议表示将会,一定会ks5u精品课件must and cant ks5u精品课件must和和cant：must用来表示用来表示“命令命令”、“推测推测”等含义。等含义。1）表示规定、指令）表示规定、指令表表示示规规定定、指指令令时时主主要要指指客客观观上上的的法法律律、条条文文规规定定，常常常常翻翻译译为为“应应该该、必必须须”之之类类意意思思。mustnt表示禁止表示禁止You must have a passport if you want to goabroad.ks5u精品
16、课件2)表示主观的命令、禁止表示主观的命令、禁止表表示示主主观观的的命命令令、禁禁止止时时，主主要要指指说说话话者者主观的命令或强烈的劝告。主观的命令或强烈的劝告。You can go out with your friend but youmustcomebackbefore11atnight.-MustIhandintheexercisetoday?-No,youneednt.。ks5u精品课件3）表示猜测，语气非常肯定，近乎确定的意表示猜测，语气非常肯定，近乎确定的意味，一般用于肯定句，意为肯定味，一般用于肯定句，意为肯定。其否。其否定为定为cant，意为不可能意为不可能.。Youmus
17、tbeill.Icanseeitfromyourface.Hecantbeathome.Isawhimintheclassroomjustnow.ks5u精品课件must和和haveto1.must用于一般问句中用于一般问句中,肯定回答用肯定回答用must否定式用否定式用neednt或或donthaveto，做，做“不必不必”,mustnt表示表示“禁止，不允许禁止，不允许” MustIfinishallassignmentsatatime?Yes,youmust.No,youneednt.ks5u精品课件IdontlikethisTVset.Wemustbuyanewone.Therewas
18、nomorebus.Theyhadtowalkhome.2.表示表示“必须必须”这个意思时，这个意思时，must和和haveto稍有区别。稍有区别。must着重说明主观着重说明主观看法，看法，haveto强调客观需要。另外，强调客观需要。另外，haveto能用于更多时态。能用于更多时态。 ks5u精品课件Not sure Very sure Hemightbeintheclassroom. Hemaybeintheclassroom. Hecouldbeintheclassroom. Heshouldbeintheclassroom.Hemustbeintheclassroom. ks5u精品
19、课件1.Findsentenceswithmodelsinthepassage:1.Other celebrations were held when hunters could catch animals.2.They lit fires and made music because they thought these festivals would bring a year of plenty.3.or satisfy and please the ancestors, who could return either to help or to do harm.4.In Japan th
20、e festival is called Obon, when people should go to clean the graves and light incense in memory of their ancestors.5.On this important feast day, people might eat food in the shape of skulls, and cakes with “bones” on them.6.It is now a childrens festival, when they can go to their neighbours homes
21、 and ask for sweets.7. abilitypossibilitypossibilitythe past habitpossibilitypossibilityks5u精品课件7. If they are not given anything, the children might play a trick.8. Some people might win awards for their animals, flowers, fruit and vegetables,9. At the Spring Festival in China, peopleand may give c
22、hildren lucky money in red paper.10. They might include parades, dancing in the streets day and night. possibilitypossibilitypossibilitypossibilityks5u精品课件2.Complete the following sentences with proper modalverbs.1)Youvebeenworkingallday.You_beverytired.2)(The door bell rings)I wonder who that is, i
23、t_ be Lisa.Shesstillinthelibraryatthistime.3)Itisalongtimesincewemetlasttime.You_comeandseeusmoreoften.4)IhaventdecidedwhereImgoingformyholidays.I_gotoAustralia.5)Myfathersbirthdayiscoming.What_Igethim?6)Whydontyoutryonthisdress?It_lookniceonyou.7)“Whowasthemantalkingwithyourteacher?”“Imnotsure.It_b
24、eherbrother.8) I dont know when the guests _ be here. They_arriveatanytime.mustcantshouldmayshallwillmightwillcouldks5u精品课件2.A:_XiaoFengfindtheoriginofEasterfromthatbook?B:No,he_.1.A:_youliketogotoaspecialeventwithusonSaturday?B:Yes,I_.Woulddliketogowithyouon SaturdayCouldcouldntfindit3.Finishthedia
25、loguewithmodalverbsks5u精品课件3.A:_Igowithmyfriendtotheharvestfestival?B:Yes,you_.4.A:IfIwanttobeadoctor_Istudyscience?B:Yes,you_.shouldstudyscienceMaymaygo(withyourshouldfriends)ks5u精品课件5.A:Heisveryhandsome._heplaytheroleoftheprince?B:No,he_.cantplaytheroleoftheCanprinceks5u精品课件Makeadialogueusingmodal
26、verbsaccordingtothegivensituation.YouhavetogotobuyfoodandgiftsforSpringFestival.Inpairs,oneastheshopkeeperandtheotherasthecustomer,offerandrequesttheitemsyouneed.Usetheseexpressionstohelpyou.Wouldyoulike?CouldIhave?MightIsuggest?MayIsee?Youshouldtry?Couldwelookat?Canyousee? Wemighttake?ks5u精品课件Sampl
27、edialogue:In the supermarket a customer is talking with the salesman.A:Hello,IneedtobuysomethingsfortheSpringFestival.B:MayIsuggestthesegiftsforthechildren?Theyareverypopular.A:Theyarepretty,butcouldIhavealookattheredpaperenvelopesontheshelf?B:Sure,wouldyouliketheseones?Theyarelessexpensive.A:Thatsf
28、ine.Illtaketwelveofthem.MayIseewhatyourporkislike?Ineedtomakedumplings.B:Ofcourse,itsoverthere.Youshouldtrysomeofthecabbagethatjustarrived.Itsveryfresh.A:Ok,couldIhavethreecabbagesandakiloofpork?Ialsoneedsomeflour.B:Can you seetheflourdown there?Pleasetakewhatyou need.Thanksforcomingin,andhaveagoodh
29、oliday.ks5u精品课件practice.Chooseoneofthefollowingsituationstocreateashortdialogueusingmodalverbs.SituationA:Inalibrary. Askthelibrarianifhecanhelptofindabookrelatingtosomespecifictopics,whethertheycanberenewedornot,andhowtodoif the books are lost. (“Could you please find?”“MayI?”“Youmustnt”)Situation
30、B: A doctor gives a patient some advice.(“Youshould”)Situation C: In a park by a lake. Discuss that oneshouldnotdestroytheenvironment.(“Youshould”,“Youshouldnt”,“Youmustnt”)Situation D: Requesting an appointment. (“Willyou?”“ShallI?”)ks5u精品课件1.-Therewerealreadyfivepeopleinthecarbuttheymanagedtotakem
31、easwell.-It_acomfortablejourney.()A.cantbeB.mustnthavebeenC.shouldntbeD.couldnthavebeenD2.Thefirespreadthroughthehotelveryquicklybuteveryone_getout.()A.hadtoB.wouldC.couldD.wasabletoDks5u精品课件3.Peter_comewithustonight,butheisntverysure.A.mustB.canC.mayD.willC4.-CouldIcallyoubyyourfirstname?-Yes,you_.
32、A.willB.couldC.mayD.mightC5.Sorry,Imlate.I_haveturnedoffthealarmclockandgonebacktosleepagain.A.mightB.shouldC.canD.willAks5u精品课件6.-Excuseme,butIwanttouseyourcomputertotypeareport.-You_havemycomputerifyoudonttakecareofit.A.shantB.mightnotC.needntD.shouldntA7.-WhencanIcomeforthephotos?Ineedthemtomorro
33、wafternoon.-They_bereadyby12:00.A.canB.shouldC.mightD.needB8.Withsomuchworkonhand,you_toseethegamelastnight.A.mustntgoB.couldhavegoneC.shouldntgoD.shouldnthavegoneDks5u精品课件9.Johnny,you_playwiththeknife,you_hurtyourself.()A.wont;cantB.mustnt;mayC.shouldnt;mustD.cant;wouldntB10.Imissedthebus,soI_gohomeonfoot.A.mustB.mayC.canD.hadtoDks5u精品课件表示表示“能能力力”表示表示“推测推测”表示表示“许可；要求许可；要求”表示表示“建议建议”和和“义务义务”canmustcanmustcouldshouldcouldhave tocouldmayneedmaymightShall I ?mightmustcantshouldntmayntmustntmightntWould you like?Can ?Will you please ?ks5u精品课件
