Unit6　ElectricityGrammar课件牛津深圳版英语七年级下册

Grammar(P77～P79)

情态动词没有人称和数的变化,但有一定的意义,不能单独存在,必须与动词原形一起构成谓语,表示说话者的情感、态度以及对某一行为或状态的看法。能力()(1)“Well,”saidthefirst,“IknowI________domuch,butperhapsIcancheerhimalittle.I'llgodowntoshowmysupport,ifIcan'tdoanythingmore.HereIgo！”(2021年广州中考语法选择第8题)A.needn'tB.shouldn'tC.mustn'tD.can'tD根据句意,用情态动词can的正确形式填空。(2)Johncanplaybasketball,buthe_________playfootball.(3)Lily________dotheworkbyherself.Sheisverysmart.(4)—Canyoulendmeyourbike?—Sorry,I_________.Iwillgohomebybikeintenminutes.can'tcancan't—Lookatthatmanunderthetree.IsitMrWang?——看树底下的那个男人。那是王先生吗?—No,itcan'tbeMrWang.MrWangisverytall.——不,不可能是王先生。王先生很高。can还可表示猜测,多用于_______句中。否定可以；允许选词填空。(1)You_________(may/maynot)eatthecakeonthetableuntilyouwashhands.(2)Thesummerholidayiscoming._______(Can/May)yoursummerholidaybeajoyfulone!(3)—MayIgohomenow,MissYu?—No,you_________(needn't/can't).Youshouldcleantheclassroomfirst.maynotMaycan't

Ifyouarenotcarefulwhenyoucrossaroad,carsmayhityou.如果你过马路的时候不小心,汽车可能会撞到你。

may可表示说话人的猜测和对事实可能性的判断,意为“_____________”。也许；可能(1)Youmustfinishyourhomeworkontime.你必须按时完成作业。(2)Youmustn'tthrowrubbishhere.禁止在这里扔垃圾。(3)—MustIhandinmyhomeworknow?——我必须现在交作业吗?—Yes,youmust./No,youneedn't.——是的,你必须。/不用,你不必。必须mustn'tneedn't()(1)DeepintheforestlivesDavid,wholovesbooks.Assoonashereadsonebook,hebringsanotherhome.Soonthehouseisfilledwithbooks.Hiswife,Alice,isangry.“You________dosomething！”(2020年广州中考语法选择第3题)A.mustB.couldC.wouldD.mayA根据句意,用情态动词must的正确形式填空。(2)—You___________smokeintheforest.—Sorry,Iwon'tdothatagain.(3)We_________studyhardifwewanttoachieveourdreams.mustn'tmust

Thelightison.Hemustbeathome.灯亮着,他一定在家。

must还可表示猜测,意为“____________”。一定；准是Ⅰ语法巩固()1.—What________Idoforyou,Madam?—Ineedsomesugar.A.canB.mayC.mustD.shallA()2.—DoesMrBrowndrivehere?—I'mnotsure.He________comebytrain.A.mayB.shallC.needD.mustA()3.You________goandseeadoctoratoncebecauseyou'vegotafever.A.canB.mustC.mayD.wouldB()4.Everyoneishere.________westartthemeeting?A.WouldB.MustC.CanD.WillC()5.—________wefinishthehomeworkinclass?—No,you________.You________finishitafterclass.A.Must;mustn't;needB.Must;needn't;canC.Can;mustn't;needD.Can;needn't;mustBⅡ小语篇训练Youmayknowthatpeopleproducemostoftheelectricityinapowerstation.Andit1.____________toyourhomesandschoolsthroughcables.Butdoyouknowwhatenergyresourcesareusedtorunpowerstations?()1.A.travelB.travelsC.travelledD.willtraveltravelsBEnergyresourcescanbedividedintotwokinds:non-renewable(不可再生的)andrenewable.Non-renewableresources2.____________beuseduponeday,suchascoal,oilandnaturalgas.3.____________weuseupcoal,oilandnaturalgas,theywilldisappearforever.()2.A.mayB.needC.mustD.should()3.A.AlthoughB.BecauseC.BeforeD.IfmayAIfDPeoplecanfindrenewableresourcesmoreeasily.Wood,wind,sunshineandwaterinlakesandriversarerenewableenergyresources.Wecanproduceelectricityby4.____________somekindsofrenewableresources.()4.A.useB.touseC.usingD.tousingusingCCoal,oil,naturalgas,wood,windandsunshineareprimaryenergyresources.Electricityisasecondaryenergyresourcebecauseweuseprimaryresourcestomake5.__________.Theseprimaryresourcescanbenon-renewableorrenewable.Electricityitselfisnotnon-renewable.Itisnotrenewableeither.()5.A.itB.itsC.it'sD.itselfitAⅢ语法选择Today,I'mgoingtoshowyouhowtomakeapotatobattery.Forthis,youwillneed1.______wire,afewpotatoes,somezinenails(锌钉)andsomecoppernails.Ihavehereavoltmetre(电压表)2.________Icantestifit'sproducingelectricity.Ifyoudon'thaveavoltmetre,you3.________buyasmalllightbulbfromanysupermarkettomakesurethatit'sworking.Right!Let'sbegin!()1.A.anB.aC.theD./()2.A.butB.orC.andD.when()3.A.canB.mayC.willD.must语篇类型：记叙文主题：人与自然(环保行为)难度：词数：约230用时：7分钟aBandCcanAFirst,youneedtoputthenails4._________thepotato,onezinenailinandonecoppernailintoo.Next,youputavoltmetreyoupreparedbeforeonthenailstocheckifit'sproducingpower.Now5._________see,it'sproducingpower!Thenifyouwanttoproducemorepower,youcouldadd6._________potato.Soonceagain,youputazinenailandacoppernailin.Finally,youcanconnecttheendsofthewirearoundthenails.Useawirewithcrocodileclips(鳄鱼夹).What'sveryimportantisthatyouneed7.___________oneendtoacoppernailwhichthengoestoazinenail.Nowit8._____________！Andthatishowyoumakeapotatobattery.Howamazingitis!Butyoucould9._________makebatteriesoutofanyfruitorvegetableslikeanorangeoracarrot.Whynot10._________atrythisweekend?()4.A.withB.ofC.into