unit9SectionA.ppt

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1、九年级人教新目标Unit9Whenwasitinvented?SectionAWhichdoyouthinkisthemostimportantinventionintheworld?Whatothercanyouthinkof?TV?telephome?radio?computer?caculator?car?Doyouknowwhatarethey?computerradiotelevisioncalculatortelephonecar1a.GroupworkLookatthethingsbe

2、low.Inwhatordersdoyouthinktheywereinvented?Numberthem[1-5]524131b.Listenandmatchtheinventionswiththedates.18851976ab19711876cd1927eAccordingtowhatyouhavelistened,answerthequestionsbelow.1.Whatdidthegrandmahavewhenshewasyoung?2.Whydidn’ttheyhaveatelevis

3、ionatthattime?3.Doesgrandmahavepersonalcomputernow?Telephoneandcar.Becauseitwasexpensive.Yes,shedoes.1c.PairworkWhenwasthecomputerinvented?Ithinkitwasinventedin1976.______ShoeswithadjustableheelsIt’susedforscoopingreallycoldicecream.Right.Itwasinvented

4、byChelseaLanmon._______battery-operatedslippers_______heatedicecreamscoop2a.Listenandnumbertheinventionsintheorder.3122b.Listenagainandmatchtheitemsincolumns.InventionWhowasit/weretheyinventedbyWhatisit/aretheyusedfor?shoeswithadjustableheelsChelseaLan

5、monscoopingreallycoldicecreambattery-operatedsneakersJayceCoziarandJamieEllsworthseekinginthedarkheatedicecreamscoopJulieThompsonchangingthestyleoftheshoes2c.PairworkWhatisitusedfor?Itisusedforseeinginthedark.3a.Hateitorlikeit?alarmclockcameralightbulb

6、herbicidemicrowaveovenrefrigeratorvediographyingmachineairconditionerplasticbagCanyouthinkofothers?3b.PairworkA:whatdoyouthinkisthemosthelpfulinvention?B:Ithinkthemosthelpfulinventionisthecomputer.A:whyisthat?B:BecauseithelpsmesearchtheinformationthatI

7、need.4.GroupworkImaginethatyouarealoneonatinyisland.Choosefiveinventionsyouwouldliketohaveontheislandwithyou.A:I’dliketohavearadiobecauseIcouldlistentomusicallday.B:Yes,butthat’snotgoingtohelpyouleavetheisland.Ithinkitwouldbebettertohaveatelephone.Expl

8、anation1.It’susedforscoopingreallycoldicecream.beusedfor意为“被用来……”,强调用途或作用。e.g.Thedusterisusedforcleaningtherooms.beusedas意为”被当作……来用”，强调被当作工具或手段来用。beusedby意为“被……使用，强调使用者。e.g.Thebigboxisusedasatable.Thecarisusedbyourmanager.3.Battery-oper