冀教版英语八年级下unit4 lesson25课件_1

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1、Lesson25Let’sDoanExperiment!洋县金水陆颖science科学experiment实验;试验theory理论;学说fill装满jar广口瓶;罐子upside上部;上边prove证实;证明observe观察;监视scientific科学的method方法;办法LearnthewordsandexpressionsFillintheblankswiththerightwordsandthefirstletterisgiven.1.Let’sdoane.2.BrianhasonetandDannyhasanot

2、her.3.Theycanpwho’sright.4.Iturnthejarudown.5.Pleaseocarefully.xperimentheoryrovepsidebserve.Listenandanswer·WhatwillBraindo?Hewilldoanexperiment1.WhydoesDannysaytheyshoulddothisexperimentoutside?BecauseDannythinksthefloorwillgetwet.What’sBrain’stheory?Brianissurethe

3、floorwon′tgetwet.QUESTIONSFinishofftheseexercises.1.用……把……装满______________2.用……把……盖住______________3.我(不)确信……_________________4.正面朝上______________5.把……翻转_______________________________fill…with…cover…with…Iam(not)sure…rightsideupturn…upsidedown/turn…overLet'sdoitWrite

4、downthestepsofdoingtheexperiment1.Fillajarwithwater.2.Coverthetopwithapieceofcardboard.3.Turnthejarupsidedown.Whatwillhappen?Youmaysay…I’msure…I’mnotsure…Thefloorwillgetwet.Ithink…Thefloorwon’tgetwetMaybe…Thecardboardcankeepthewaterinthejar.一、Ifillajarwithwater.我用水把瓶

5、子装满。fill…with…用……装满……(主语是人)befullof…/befilledwith…(主语是物或容器)同义句转换。1.Theroomsarefullofthestudentsnow.Therooms_______________thestudentsnow.2.Mypocketisfilledwiththemoney.Mypocket_______________themoney.arefilledwithisfullof学以致用二.Iturnthejarupsidedown.我把广口瓶倒置。upsidedown

6、的意思是“向下翻转过来”.Youholdthebookupsidedown.你把书拿倒了。rightsideup是“正面朝上”的意思Thatpictureisupsidedown.学以致用三、I’msurethefloorwon’tgetwet.我确信地板不会湿。besure表示肯定,有把握,而benotsure表示不确定besure/benotsure后可接句子，还可接代词、名词、动名词或不定式。常见用法：besureofsb/doingsth,besuretodosth完成下列各题。1.我确信她会来。_________tha

7、tshewillcomehere.2.他没有把握通过考试_____________topasttheexam.I’msureHe’snotsurePRACTISE..practice1He____thestockings____Christmaspresents.（用…装满）2Mymotherisholdingthebook__________.（倒着）3我弟弟用一块玻璃盖住了那个杯子。Mybrother______theglass____apieceofglass4我肯定他会来。___________hewillcome.fi

8、lledwithupsidedowncoveredwithIamsureHowdowedotheexperimentFirst,____ajar_____water.Then,_____thetop____apieceofcardboard.Finally,__