初中英语人教版七年级下册Unit4-Dont eat in class..ppt

,Donteatinclass.,Unit4,赞皇县第一中学丁勇锋,SectionA2GrammarFocus-3c,1.不要在楼道里跑。_2.不要打架。_3.有什么规则？_4.我们必须按时上课._,阅读GrammarFocus部分，完成下列句子。,Dontfight.,Dontruninthehallways.,Whataretherules?,Wemustbeontimeforclass.,GrammarFocus,5.我们可以在教室里吃东西吗？_6.不能。但我们可以在餐厅里吃东西。_7.我们可以在上课的时候带帽子吗？_,Canwewearahatinclass?,No,wecant,butwecaneatinthedininghall.,Canweeatintheclassroom?,语法讲解-祈使句,一、祈使句1.用法：一般以动词原形开头，表示请求、命令、劝说、警告等。在祈使句中，通常省略句子主语第二人称you。,探究乐园,二.祈使句的肯定式祈使句的肯定句式一般分为以下三种类型：1.行为动词原形其他成分。例如：Makesentencesafterthemodel.根据例句造句。2.Be动词其他成分（形容词、名词或介词短语等）。例如：Becarefulwhencrossingthestreet.过马路时要小心。3.Let宾语动词原形其他成分。例如：Lethimgobacknow.让他现在回去吧。,(1)肯定句：_+其他在餐厅里吃东西。_在音乐教室里听音乐。_骑自行车去上学。_,Ridethebiketoschool.,Eatinthedininghall.,动词原形,Listentomusicinthemusicroom.,否定句:_+_+其他不要和同学们打架。_不要在教室里打篮球。_,Dontfightwithyourclassmates.,Dontplaybasketballintheclassroom.,Dont动词原形,3.Let引起的祈使句的否定形式有两种：（1）Let开头的祈使句，如果后面跟第一、第三人称名词或代词的宾格，可在Let前加Dont，也可在Let后宾格的名词或代词后面加not。（2）如果以Lets开头的祈使句，必须在Lets后加not。例如：Dontletmegowithhertomorrow.Letmenotgowithhertomorrow.不要让我明天跟她一起去。Letsnottellherthetruthwheneverwemeether.无论什么时候我们碰到她，都不要告诉她真相。,4.在公共场合的提示语中，否定祈使句常用“No名词/V-ing形式”结构，表示“禁止做某事”。例如：NOPHOTOS!禁止拍照！NOSMOKING!禁止抽烟！,祈使句的回答,祈使句的动作通常是表示将来发生的动作，所以回答祈使句时，一般用will或wont。在回答具有否定意义的祈使句时，要注意两点：一是形式一致，即Yes与will保持一致；No与wont保持一致。二是意思相反，即Yes是不的意思；No是“是”的意思。在回答时，要注意分析上下文语境中所提供的条件。,-Dontgoout,please.Itsrainingheavilyoutside.请不要出去。外面雨下得很大。-Yes,Iwill.Ihavetomeetmybrotherattheairport.不行，我得去机场接我弟弟。,祈使句与陈述句的并列使用祈使句后接陈述句时，须用连接词连接。如果祈使句与陈述句表示的是一种顺承关系时，要用并列连词and来连接；如果祈使句与陈述句存在一种否定条件关系时，要用并列连词or来连接。例如：LeaveitwithmeandIwillseewhatIcando.把它留给我吧，我想想有没有办法。Hurryup,orwellbelate.快点，否则我们要迟到了。,祈使句的强调形式祈使句的强调形式通常在肯定祈使句式前加上助动词Do（Do在句中无意义）。例如：Doshutup!快住口！,1.Dontbelateagain,Mike?_.A.No,IdontB.DontworryC.Sorry,IwontD.Idontknow【解析】选C。,2.Whichsignmeans“NoPhotos”?【解析】选C。禁止拍照。,3.Tom!_talkloudly.Mylittlebrotherissleeping.A.DoB.DoesC.DontD.Doesnt4.Sorryforbeinglateagain._hereontimenexttime,oryoullbepunished.A.BeB.BeingC.TobeD.Been【解析】选A。,【解析】选C,5.Hurryup,oryouwillmissthetrain.(改为同义句)_you_hurryup,youwillmissthetrain.【解析】If;dont。祈使句+or+简单句。可转换为if引导的条件状语从句的复合句。,1.Jim,_meahand.A.givesB.isgivingC.willgiveD.give2._careful,Jenny!Thereisatreeinfrontofyou.A.AmB./C.BeD.Was3.Lets_ourtime.A.notwasteB.nowastingC.nottowasteD.nowaste4._higher,andyouwillseethehouse.OK.A.IfyoustandB.TostandC.WhenyoustandD.Stand,Exercises:,5.Please_doit.A.heB.lethimC.letheD.him6._letanyoneopenthedoor.A.DontB.WillC.NotD.No7.Dontbelateagain.Sorry,_.A.ImayB.ImustC.IwillD.Iwont8.Callmewhenyougethome.OK,_.A.ImustB.IcanC.IwillD.Imay,Exercises:,祈使句,无主语,只用动词就可以.表示请求或命令,加上please表客气。如果变成否定句，Dont开头是规律。Notalking!是警示，祈使句用法要牢记。,祈使句,Letsdomoreexercises.,1.Callmewhenyougethome.OK,_.A.ImustB.IcanC.IwillD.Imay2.Jim,_meahand.A.givesB.isgivingC.giveD.willgive3.Letme_ondutytoday.A.amB./C.beD.do4.Lets_ourtime.A.notwasteB.nowastingC.nottowasteD.nowaste5._higher,andyouwillseethehouse.OK.A.IfyoustandB.TostandC.WhenyoustandD.Stand,C,C,C,A,D,Choosethecorrectanswer.,6._forgettowritetomewhenyou_gettherenextTuesday.A.Dont;willB.Please;willC.Please;/D.Dont;/7.Please_doit.A.heB.heletC.lethimD.him8._comein,please.A.WillB.DoC.WontD.Did9._careful!A.BedoB.DobeC.NotD.Notdo10._letanyoneopenthedoor.A.DontB.WillC.NotD.No,D,C,B,B,A,11.LetJohnfinishtheworkallbyhimself,_?A.shallweB.willyouC.doyouD.dowe12.-Letsgohome,shallwe?-_.A.Thatsright.B.ThatsallC.ThatsallrightD.Allright13.Pleaseturnonthelight,_?A.areyouB.shallweC.shallID.willyou14.Donttellhimthefactnow,_?A.shallweB.shallyouC.willyouD.doyou15.Letthechildrennotmakesomuchnoise,_?A.shallweB.willyouC.shallID.doyou,B,D,D,C,B,16._6and4,andyouwillgetten.A.AddedB.AddingC.ToaddD.Add17._lateagain,orIllreportittoyourfather.A.DontbeB.YouarentC.CantbeD.Arent18.Dontinterruptherwhensheisspeaking,_?A.wontyouB.willyouC.shallweD.shantwe19._getoffthelorryuntilitstops.A.DoB.CantC./D.Dont20.Letsnotbeginoursupperuntilfathercomesback,_?A.w