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1、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
2、备Arecorder,aprojectorandsomeslidesTeachingproceduresandways教学过程与方式Step1LeadinWhatshould/shouldn’twedotokeephealthy?Whatkindoffoodmustweeattobestrong?Whatoughtwetodotostayslim?Step2ModalverbsWhatmodalverbshaveyoulearned?can/couldmay/mightwill/wouldhadbettershall/shouldmusthavetoneed
3、oughttodareStep3Explanation1.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
4、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或have to, 否定
5、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’tcomeherewithoutpermission.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,而hav
6、e 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’thavetobuyacomputeratpresent. 他们目前没有必要买电脑。 Step4Choosethecorrectanswer1.Bylunchtimeth
7、eywouldallbesold.2.Hisrestaurantoughttobefullofpeople.3.Whatcouldhavehappened?4.Nothingcouldhavebeenbetter?5.Somethingterriblemusthavehappened.6.Iwilltakeallthatfatoffyouintwoweeks.7.Hecouldnotbelievehiseyes.8.Hewonderedifheshouldgotothelibrarytofindout.9.Hecouldn’thaveYongHuigetti
8、ngawaywithtellingpeoplelie