高中英语《Unit2 Healthy eating》教案（5）新人教版必修3-新人教版高一必修3英语教案VIP专享VIP免费

TheFifthPeriodGrammarTeachinggoals教学目标1.Abilitygoals能力目标Enablestudentstolearntheusagesofmodalverbsought,should,needn’t,don’thaveto.2.Learningabilitygoals学能目标Helpstudentslearnhowtochoosesuitablemodalverbs.Teachingmethods教学方法Practicing(individuals)Discussion(groupwork)Teachingaids教具设备Arecorder,aprojectorandsomeslidesTeachingproceduresandways教学过程与方式Step1LeadinWhatshould/shouldn’twedotokeephealthy?Whatkindoffoodmustweeattobestrong?Whatoughtwetodotostayslim?Step2ModalverbsWhatmodalverbshaveyoulearned?can/couldmay/mightwill/wouldhadbettershall/shouldmusthavetoneedoughttodareStep3Explanation1.oughtto／shouldshould和oughtto都为“应该”的意思，可用于各种人称。oughtto的语气稍重一些。Yououghtto(should)followyourteacher’sadvice.表示主语的义务或责任：Youshouldtakecareofyoursister．你应当去照顾你妹妹。或指出—个正确、明智的动作：Theyshouldn'tallowparkinghere；thestreetistoonarrow．这儿不该允许停车；马路太窄了。should和oughtto后面跟动词不定式的完成式,其肯定句表示”过去应该做而未做”,其否定句则表示”过去不该做但做了”。Youshould/oughttohavemadethedecisionaweekago.Ishouldn'thavemadesuchafoolishmistake.多数情况下，oughtto可与should互换使用。oughtto的反意疑问句用shouldn’t替代。2.must和havetomust的用法1）表示主观的义务和必要,主要用于肯定句和疑问句,意思为“必须……，得……，要……”；由must引起的疑问句，肯定回答要用must或haveto,否定回答要用needn’t或don’thaveto,意思是“不必”；must的否定形式mustn’t表示禁止，意思是“不能，不许”。如：—MustIfinishthetaskrightnow?我现在必须完成这个工作吗？—Yes,youmust./Yes,youhaveto.是的。(—No,youneedn’t./No,youdon’thaveto.不，不必。)Youmustn’tcomeherewithoutpermission.未经允许，你不能来这儿。haveto的用法1）must表示一种主观的需要，而haveto表示一种客观的需要，意思是“不得不”。如：Ihavetoattendanimportantmeetingthisafternoon.今天下午我不得不参加一个重要的会议。Motherisout,soIhavetolookaftertheshop.妈妈不在家，因此我不得不照看商店。2）haveto的否定形式是don’thaveto,相当于needn’t。如：Theydon’thavetobuyacomputeratpresent.他们目前没有必要买电脑。Step4Choosethecorrectanswer1.Bylunchtimetheywouldallbesold.2.Hisrestaurantoughttobefullofpeople.3.Whatcouldhavehappened?4.Nothingcouldhavebeenbetter?5.Somethingterriblemusthavehappened.6.Iwilltakeallthatfatoffyouintwoweeks.7.Hecouldnotbelievehiseyes.8.Hewonderedifheshouldgotothelibrarytofindout.9.Hecouldn’thaveYongHuigettingawaywithtellingpeoplelies.10.Hehadbetterdosomeresearch.11.Aftereatingintherestaurantpeoplewouldbecomefiredveryquickly.Step5ExplanationThestudentswilllearntheusageofmodalverbsandtrytomakethestudentsclearthefunctionsofmodalverbs.Thengivethemsomeexamples.Step6ExercisesChoosesuitablemodalverbsfrombelowtocompletethefollowingdialogues.Theremaybemorethanonepossibility.1.SAM:HowcanIgrowthinner,Mum?MUM:Well,you_______eatfoodwithplentyoffiberthathelpsyoudigestbetter.Andyou______stopdrinkingcolaoreatingsweetfood.SAM:DoesitmeanI_______eatmyfavouritefriedchickenanymore?MUM:Notexactly,ifyoulovefriedchicken,you_______giveitup.Justeatitlessoften.You__________________________worrytoomuch:alittlefriedchicken________doyougood!2.Doctor:Youaresickbecauseyou’veeatenpoisonousmushrooms.Wheredidyougetthem?Lucy:Ipickedthenintheforest.Iknowwe_______eatfreshvegetables.Doctor:Oh,butyou________eatthemuntilyou’resuretheyarenotpoisonous.Lucy:Thankyou,doctor.I’llbemorecarefulnexttime.3.CHARLES:IwishIcouldseethingsclearlyinthedark.TOM:Eatingcarrots________helpyouseebetter.You________eatsomeeveryday.