英语课件unit9SectionA.ppt

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1、SectionA葛敏杏波塘中学Unit9Whenwasitinvented?Guessing:Whatisit?part1Guessing:Whatisit?Guessing:Whatisit?ItisaMicrowaveovenItisusedforcookingandheatingfood(加热)Whatisitusedfor?Whatfoodcanbeheatedinit?Whatisitusedfor?Itisusedforcounting.calculatorWhataretheyusedfor?Theyareusedforgivinglight.lightbulb

2、sWhatis/are…usedfor?It’s/They’re…usedfor…part2alarmclockIt’sanannoyinginvention.BecauseitwakesmeupwhenI’msleeping.Ithinkcomputeristhemosthelpfulinvention.BecauseithelpsmesearchtheinformationthatIneed.part3Asurvey:Whatdoyouthinkisthemosthelpful/annoyinginventions?NameHelpfulinventionsWhyAnno

3、yinginventionswhytelephoneAlarmclockcomputertruckradiolightbulbUsefulexpressions:A:Whatdoyouthinkisthemosthelpful/annoyinginvention?B:Ithinkthemosthelpfulinventionis…A:Whyisthat?B:Well,itgives/helpspeople…part4Whowas(telephone)inventedby?ItwasinventedbyBell.HenryFordEdisonBellTs’aiLunWright

4、brothersfisherinventorsinventionsPapermakingPlaneWashingmachineLightbulbCarTelephone1bListenandmatchtheinventionswiththedates.abedc18761885192719711976dabec18761885192719711976part5Whenwasthecarinvented?Itwasinventedin1885.ChineseinventionsHowmanyinventionsdoyouknow?Groupwork:WhatWhenWhoBeu

5、sedforPrintingTangDynasty朝代ChineseMakingcopiesbattery-operatedslippersheatedicecreamscoopshoeswithadjustableheels电池供电的拖鞋加热的冰激凌勺可调节后跟的鞋2aListenandnumbertheinventionsintheorderthatyouhear.3122bListenagain.Matchtheinventionswiththeirinventorsanduses.Inventionshoeswithadjustableheelsbattery-ope

6、ratedslippersheatedicecreamscoopWhowasit/weretheyinventedby?ChelseaLanmonJayceCoziarandJamieEllsworthJulieThompsonWhatisit/aretheyusedfor?scoopingreallycoldicecreamseeinginthedarkchangingthestyleoftheshoesmusiccandleactivityglassestemperaturecupChallenge:Trytobeaninventor!Welcome!Thepassive

7、voice.被动语态被动语态的构成:be动词+(及物动词的)过去分词一般现在时一般过去时am(is,are)+donewas(were)+done{Homework:DescribeoneofyourinventionsAndthenwriteitdown.被动语态专项复习被动语态基本用法当句子的主语是动作的执行者时，谓语的形式是主动语态。当句子的主语是动作的承受者时，谓语要用被动语态。被动语态由助动词be+过去分词构成，时态通过be表现出来。Hisbrotherwashesbowlseveryday主