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1、第五章情态动词学习目标(LearningObjectives)Bytheendofthelesson,wewillbeableto:·acquirethespecialusageofsomemodalverbsinthecontext;·applysomegrammarrulesofmodalverbstosolvingtheproblemsinpractice.热身(Warming-upexercises)1.He_________havethebookwhenIfinishit.2.They_________finishitbynow.3.Stainlesssteel_________
2、_notrust.4.Whenhewasthere,he_________gotothatcoffeeshopatthecornerafterworkeveryday. A.would B.shouldC.hadbetter D.might重点(Keypoints)1.Can,could⑴can和could还可用于表示对事情可能性的推测(常用于否定,疑句中)据说我们下周要进行期中考试,这消息是真的吗?It’ssaidthatwewillhavethemid-termexamnextweek.___________________?他不可能去了国外,因为我刚刚在他的办公室遇见他
3、。_________________________________________becauseImethiminhisofficejustnow.现在:could/can’tbe过去:can’t/couldn’thavedone⑵在肯定句中,can还可表示“有时会,往往”吸烟往往会导致癌症。_______________________________________.(中译英)Itcanbeverycoldhereinwinter.________________________________.(英译中)TheWorldWideWebissometimesjokinglycalle
4、dtheWorldWideWaitbecauseit_________beveryslow.A.should B.must C.will D.can⑶与can的一些常用搭配①can’tbutdosth.不得不/只好做某事Ican’tbutadmirethetruthofyourremarks,althoughtheygoagainstmyinterests.②can’thelpdoing忍不住做某事Wecouldn'thelplaughingwhenweheardthefunnystory.③can’t与enough连用表示“再……也不为过Onecannotpractic
5、eenoughwhenlearningaforeignlanguage.注:此种用法还可用cannot(或never等否定词)…too…”表达Ican’tthankyoutoomuch.=Ican’tthankyoumuchenough.2.Shallshall常用于第一,三人称疑问句中,表示征求对方意见,用于二、三人称陈述句中表示意图、命令、警告、允诺、强制等,在法律法规等文件中表示义务或规定,可译为“必须,应该,可以”等。Shallhecleantheblackboardforyou?Takeiteasy.You_________beofferedajobinthiscompany.M
6、ike_________sparenoefforttostudy.(1)“Theinterest_________bedividedintofivepartsaccordingtotheagreementmadebybothsides.”declaredthejudge.A.mayB.shouldC.mustD.shall(2)---Excuseme,butIwanttouseyourcomputertotypeareport.---You_________havemycomputerifyoudon’ttakecareofit.A.shan’tB.mightnotC.needn’tD.s
7、houldn’t(3)Thebosssaidtothesecretary,“Ifyouworkwell,you_________havearise.”A.mustB.oughtC.shallD.would3.Must⑴“must”与“haveto”都表示“必须,不得不”must:指说话人认为“主观”上有必要haveto:指根据约定,事情的因素有必要做某事---“客观”e.g.Thetrainleavesat7o’cloc