2019-2020年高中英语《Unit2 Healthy eating》教案（5）新人教版必修3 (I)

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1、2019-2020年高中英语《Unit2Healthyeating》教案（5）新人教版必修3(I)Teachinggoals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(g

2、roupwork)Teachingaids教具设备Arecorder,aprojectorandsomeslidesTeachingproceduresandways教学过程与方式Step1LeadinWhatshould/shouldn’twedotokeephealthy?Whatkindoffoodmustweeattobestrong?Whatoughtwetodotostayslim?Step2ModalverbsWhatmodalverbshaveyoulearned?can/couldmay/mightwill/wouldhadbettershall/

3、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。s

4、hould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haveto　must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

5、或have to, 否定回答要用needn’t或don’t have to, 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： —Must I finish the task right now? 　我现在必须完成这个工作吗？—Yes, you must. / Yes, you have to. 是的。 (—No,youneedn’t./No,youdon’thaveto.不，不必。)Youmustn’teherewithoutpermission.未经允许，你不能来这儿。　　have to 的用法 1）must表示一种主观的需要

6、，而have to 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）have to 的否定形式是don’thaveto,相当于needn’t。如：Theydon’thavetobuyaputeratpresent.　他们目前没有必要买电脑。 Step4Choosethecorrectanswer1.Bylunchtimethey

7、wouldallbesold.2.Hisrestaurantoughttobefullofpeople.3.Whatcouldhavehappened?4.Nothingcouldhavebeenbetter?5.Somethingterriblemusthavehappened.6.Iwilltakeallthatfatoffyouintwoweeks.7.Hecouldnotbelievehiseyes.8.Hewonderedifheshouldgotothelibrarytofindout.9.Hecouldn’thaveYongHuigettingaw