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1、 Modal Words 1.Learn the usage of the modal verbs:must,should,ought to,have to,mustnt,shouldnt,oughtnt to,dont have to,neednt.2.Be able to use the modal verbs properly in daily communication.3.Educate students to be polite in daily life.TeachingaimsFindthesentencescontainingmodalverbsinthereadingpas
2、sage.1.Bylunchtimetheywouldallbesold.2.Hisrestaurantoughttobefullofpeople.3.Whatcouldhavehappened?4.Nothingcouldbebetter”5.Somethingterriblemusthavehappenedif6.Hecouldnotbelievehiseyes.7.Perhapsheshouldgotothelibraryandfindout.8.HecouldnthaveYongHuigettingawaywithtellingpeoplelies!9.Theywouldbecomet
3、iredveryquickly.10.Hehadbetterdosomeresearch!11.Illhelpyouloseweight.12.Hecouldwinhiscustomersback.13.Youmaycomeifyouwish.What should/shouldnt we do to keep healthy?You should/ought to have a balanced diet.You _eat so much junk food.Observe and find shouldnt/oughtnt toIshouldhelpherbecausesheisintro
4、uble.Yououghttoseethedoctor.Youshouldntbelateforclass.Observe and find Itseightoclocknow.Heoughtto/shouldbeatwork.Thisbookshouldbepublishedintwoweeks.IdontknowwhyyoushouldthinkthatIdidit.Observe and find Sum upa.should,oughtto都可表示劝告、建议、都可表示劝告、建议、义务或职责义务或职责意为意为“应该应该”；“应当应当”b.should,oughtto都可表示对现在或将来按
5、常理或常规所做的推测。c c.与why,how等连用表示说话人对谋事不理解、感到意外意外、惊异惊异等，意为“竟然竟然”。2.must和和haveto1)表示主观意识而必须作某事意为表示主观意识而必须作某事意为“必须必须”；haveto表示由于某种客观原因而表示由于某种客观原因而不得不做某事不得不做某事,意为意为“不得不不得不”。Wemustfinishtheprojectintwodays.IhavetogonowforIvegotameeting15minuteslater.MustIfinishthetaskrightnow?我现在必须完成这个工作吗？我现在必须完成这个工作吗？Yes,yo
6、u_./Yes,you_.是的。是的。(No,you_./No,youdonthaveto.不，不必。不，不必。)Youmustntcomeherewithoutpermission.未经允许，你不准来这儿。未经允许，你不准来这儿。musthavetoneednt由由must引起的疑问句，肯定回答要用引起的疑问句，肯定回答要用must或或haveto,否定回答要用否定回答要用neednt或或donthaveto,意思是意思是“不必不必”；must的否定形式的否定形式mustnt表示禁止，意表示禁止，意思是思是“不能，不许不能，不许”。归纳：归纳：3.needa.need作情态动词时,用于疑问句
7、和否定句。否定形式为neednt,NeedIfinishtheworktoday?Yes,youmust./No,youneednt.b.need作为行为动词时，有人称和数的变化，构成否定句和疑问句时借助于助动词do,does,did。Thewindowneeds_.(clean)Thewindowneeds_.（clean)Thewindowdoesntneedtobecleaned.cleaningto becleaned用下列图片造句。用下列图片造句。做适当的运动做适当的运动 Youshoulddosomesports.Wemustlistentotheteachercarefully.
8、Wemustnteatinclass.Youshouldntbelateforschool.Choosesuitablemodalverbsbelowtocompletethefollowingdialogues.ought/oughtnttoshould/shouldntmustntneednt(dont)havetowillcan/cant1Sam:HowcanIgrowthinner,Mum?Mum:Well,you_eatfoodwithplentyoffibrethathelpsyoudigestbetter.Andyou_stopdrinkingcolaoreatingsweetf
9、ood.havetoshouldSam:DoesitmeanI_eatmyfavouritefriedchickenanymore?Mum:Notexactly,ifyoulovefriedchicken,you_giveitup.Justeatitlessoften.You_worrytoomuch:alittlefriedchicken_doyougood!shouldntneedntdonthaveto/neednt/shouldntwill2Doctor:Youaresickbecauseyouveeatenpoisonousmushrooms.Wheredidyougetthem?L
10、ucy:Ipickedthemintheforest.Iknowwe_eatfreshvegetables.Doctor:Oh,butyou_eatthemuntilyouresuretheyarenotpoisonous.Lucy:Thankyou,doctor.Illbemorecarefulnexttime.havetomustnt3Charles:IwishIcouldseethingsclearlyinthedark.Tom:Eatingcarrots_helpyouseebetter.You_eatsomeeveryday.oughttoshouldHomework1.Previewthereading(2)andreadingtaskonPage52.Seehowthestoryended.2.Reviewthemodalverbs.