初中三年级英语上册unit9第一课时课件.ppt

《初中三年级英语上册unit9第一课时课件.ppt》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、SectionAUnit9Whenwasitinvented?Guessing:Whatisit?part1Guessing:Whatisit?Guessing:Whatisit?MicrowaveovenItisusedforcookingandheatingfood(加热)Whatisitusedfor?Itisusedforcounting.calculatorWhataretheyusedfor?Theyareusedforgivinglight.lightbulbsLookatthethings.InwhatorderDoyouthinkth

2、eywereinvented?1a1bListenandmatchtheinventionswiththedates.abedc18761885192719711976dabecGirl:Lifemusthavebeendifficultwhenyouwereakid.Woman:Oh,notreally.Whydoyousaythat?Girl:Well,youdidn’thavemanymoderninventions.Like,youprobablydidn’thaveatelephone,right?Woman:Ofcoursewedid!Ho

3、wolddoyouthinkIam?Thetelephonewasinventedin1876.tapescriptsGirl:Howaboutcars?Ibetcarsweren’tinventedyet.Woman:Suretheywere.Carswereinventedin1885.Myfamilyhadacar.Ithinkyouneedtotakeahistoryclass,Alice.Girl:Ha,ha!Well,didyouhaveaTV?Woman:No,wedidn’t.TheTVwasinventedaround1927,Ith

4、ink.Somefriendsofminehadone.Butinthosedays,tapescriptsTVswerereallyexpensive,andwecouldn’taffordone.Girl:AndIbetyoudidn’thavecalculatorsandcomputersandstuff.That’ssomethingIdoknow.Welearnedinschoolthathand-heldcalculatorwereinventedin1971andpersonalcomputerswereinventedin1976.Wo

5、man:You’reright.Ididn’thavethosethingswhenIwasyoung.ButIdonow!tapescripts18761885192719711976part5Whenwasthecarinvented?Itwasinventedin1885.ChineseinventionsHowmanyinventionsdoyouknow?Groupwork:WhatWhenWhoBeusedforPrintingTangDynasty朝代ChineseMakingcopiesalarmclockIt’sanannoyingi

6、nvention.BecauseitwakesmeupwhenI’msleeping.Ithinkcomputeristhemosthelpfulinvention.BecauseithelpsmesearchtheinformationthatIneed.part3Asurvey:Whatdoyouthinkisthemosthelpful/annoyinginventions?NameHelpfulinventionsWhyAnnoyinginventionswhyUsefulexpressions:A:Whatdoyouthinkisthemos

7、thelpful/annoyinginvention?B:Ithinkthemosthelpfulinventionis…A:Whyisthat?B:Well,itgives/helpspeople…part4Whowas(telephone)inventedby?ItwasinventedbyBell.HenryFordEdisonBellTs’aiLunWrightbrothersinventorsinventionsPapermakingPlaneLightbulbCarTelephonemusiccandleactivityglassestem

8、peraturecupChallenge:Trytobeaninventor!Thepassi