新冀教版九年级英语上册第25课课件.ppt-得力文库

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1、LookintoScienceUnit 5Lesson 25LetsDoanExperiment!Think about it!1.Whatkindsofexperimentshaveyoudoneinscienceclass?2.Ifyouholdajarthatisfilledwithwaterupsidedown,whatwillhappen?*WhydoesDannysaytheyshoulddothisexperimentoutside?*WhatwillBriando?*DoesDannyhavethesametheoryasBrians?Readthedialoguewithth

2、efollowingquestions.Workingroupsandthinkofthisexperiment.Discussitandwritedownhowwedoit.Step1Preparation:Makealistofthematerialsandtoolsthatwewilluseintheexperiment.Water,ajar,apieceofcardboard.Step2Theories:Writedowntwodifferenttheories.1.Thefloorwillgetwet.2.Thefloorwontgetwet.Step3Mainsteps:Write

3、downthestepsofdoingtheexperiment.1.Fillajarwithwater.2.Coverthetopwithapieceofcardboard.3.Turnthejarupsidedown.Step4Result:Writedowntheresultoftheexperiment.Theforceofairwillkeepthewaterinthejar.How do we do the experiment?Letsdoaninterestingexperiment.First,I_ajar_adesk,_it_water,then_thetop_apiece

4、ofcardboard.WhenI_thejar_,canyouguesswhatwillhappen?putonfillwithcoverwithturnupsidedown1.Ifillajarwithwater.我用水把瓶子装满。我用水把瓶子装满。fillwith用用装满装满Hehasfilledhiscasewithmanybooks.他已经把书装满了箱子。他已经把书装满了箱子。coverwith用用盖住盖住Icoverthetopwithapieceofcardboard.2.Iturnthejarupsidedown.我把广口瓶倒置。我把广口瓶倒置。upsidedown的意思是的意

5、思是“向下翻转过来向下翻转过来”。Youholdthebookupsidedown.你把书拿倒了。你把书拿倒了。rightsideup是是“正面朝上正面朝上”的意思。的意思。3.Imsurethefloorwontgetwet.我确信地板不会湿。我确信地板不会湿。besure+that从句表示从句表示“认为认为一定一定”。而而benotsure表示表示不确定不确定。eg.Imsureshewillcomehere.我确信她会来。我确信她会来。Imnotsurewhenhellcomehere.我不能肯定他什么时候来这儿。我不能肯定他什么时候来这儿。4.Welldotheexperimentan

6、dobservedwhatwillhappen.我们将做这个实验并观察会发生什么情况。我们将做这个实验并观察会发生什么情况。observed动词动词,“观察观察”observesb.do/doingsth.如：如：Iobservedherdance.WhenIpassedbythegrass,Iobservedhimwalking.根据句意及首字母提示完成下列句子。根据句意及首字母提示完成下列句子。1.Doyouoftendoe_inyourphysicsclass?2.Illp_thatwhathesaidisright.3.Helikestoreadbooksabouts_.4.Mr.Sm

7、artsatinacornerando_whatwasgoingonwiththislittleaunt.xperimentsroveciencebserved选择与画线部分意思相同或相近的词。选择与画线部分意思相同或相近的词。1.Isthetheoryrightorwrong?A.ideaB.wayC.mindD.answer2.Dontturnthebottleupsidedown.A.awayB.offC.upD.over3.WhenIdotheexperiment,youmustwatchclosely.A.learnB.knowC.seeD.observe4.-Excuseme!MayIaskyouaquestion?-Certainly.A.NoB.SorryC.SureD.Thanks请根据课文内容请根据课文内容,以以“AnInterestingExperiment”为题写一篇小作文。为题写一篇小作文。

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