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《初中英语人教版七年级下册unit4 grammar .doc》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、Unit4Don’teatinclassPeriod3教学目标:1.ReviewsP19—20words.2.掌握GrammarFocus.3.学会祈使句;情态动词haveto与must的用法.Guideone(5’)ReadaloudP19—20wordsandcheckthem.GuideTwo(10’)1.ReadGrammarFocusaloudandtrytotranslatethemintoChinese.2.ThenreciteGrammarFocusandcheckthem.GuideThree(10’)Masterimportantanddifficultpoints.1
2、.Don’t+V原+其他即Don’tdosth.不要做某事2.must+V原即mustdosth必须做某事3.have/hasto+V原即:havetodosth不得不做某事4.can/can’t+V原会(不会)做某事5.wearahat戴帽子wearauniformatschool穿校服6.beontime按时/准时/守时beintime及时7.祈使句(1)定义:表达命令、请求、劝告、警告、禁止等的句子叫祈使句。(2)祈使句的形式肯定祈使句Do型:行为动词原形+其他成分eg:Comehere,please.Stoptalking!Be型:Be+形容词/名词eg:Bequiet,pleas
3、e.Let型:let+宾语+V原+其他eg:Letmehelpyou!否定祈使句形式—1.Do型与Be型的否定形式都在句首加don’t.eg:Don’teatinclass!Don’tbelateforschool!—2.Let型否定形式:Don’t+let+宾语+V原+其他/Let+宾语+V原+其他.eg:Don’tlethimgo./Lethimnotgo.3.No+n.pl.V-ing!(即动名词)常用作标志语或说明。“严禁
4、不准
5、禁止做某事!Eg:(1)Nosmoking.不准吸烟。(2)Nophotos.不准拍照。4.情态动词haveto与must辨析(1)haveto标客观需
6、要做的事情.“必须,不得不”.单三形式hasto(2)含有haveto,hasto构成疑问句或否定句借助动词do或does。Eg:Dotheyhavetogohomenow?Youdon’thavetogoifyoudon’twantto.2.must表(1)主观义务主要用于肯定句和疑问句。由must引导疑问句,肯定回答用must,否定回答用needn’t。Eg:MustIfinishmyhomeworkbeforesixo’clock?----Yes,youmust./No,youneedn’t/No,youdon’thaveto.(2)表示肯定的猜测,常用于肯定句“一定是,必然...”
7、eg:Youmustbeverytired.GuideFour5`Finish3a(writetherulesfortheschoollibrary)GuideFive5`Finish3b(Usethewordstomakequestionsabouttherules)Thenwriteanswersaccordingtoyourschool.GuideSix10`()1.ThedoctorsaystoTom,“________stayuptoolate.”A.Doesn’tB.Can’tC.Don’tD.No()2_______yourhomeworkheretomorrow,Lucy.
8、A.BringB.BringsC.TobringD.Bringing()3.Youdon’t_____washalltheplatesaftermeals.AhavetoBmustCmayDhasto()4.Bobcannotcomeouttoplaybecausehe_____helphisdadinthegarden.AcanBcannotChastoDmust
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