仁爱版九年级上Unit2Topic3SectionC课件.ppt
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仁爱版九年级上Unit2Topic3SectionC课件.ppt
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Unit2Topic3Whatkindsofthingscanwedotoprotecttheenvironment?
SectionC-ByDavid-ByDavid1._itsraininghard,hekeepsonworkingoutside.2.Kangkangcanplaythevoilin,_Icant.3.Mr.Linisverykind_heisveryhumorous,too.4.Thesuitfitsmewell_Icantaffordit.ThoughwhileandbutFillintheblanksusingbut,and,thoughandwhile.Revision:
Whatnewwayshavebeeninventedtoproducepower?
electricvehiclebiogastechnologyWhatnewwayshavebeeninventedtoproducepower?
maglevtrainwaterbatteryLookupthesewordsinadictionary.poweracidrainnuclearrenewableelectricefficient电力;电力;动力;力动力;力酸雨酸雨原子核的,原子核的,原子能的;原子能的;核动力的核动力的可更新的可更新的电动的,电动的,用电的用电的效率高的;效率高的;有能力的有能力的Windisusedforproducingelectricityinmanyplaces.Lookatthefollowingpicturesandguessthemeaningoftheunderlinedword.Moreandmorepeopleareinterestedinelectriccars.ThemaglevtraininShanghaiusesmagnets.Themagnetspushthetrainforward.peopleproducepowerfromcoal,butitisverydirtyandcausesacidrain.Nuclearpoweriscleanbutitisverydangerous.1aChoosetherightpictureforeachparagraph.Inmanycountries,peopleproducepowerfromcoal,butitisverydirtyandcausesacidrain.Somecountriesusenuclearenergytoproducepower.However,nuclearpowercanbeverydangerous.Tosolvetheenergyproblem,peopleallovertheworldarelookingallthetimefornewwaystoproducepower.abcc_Chinaisoneofthefirstcountriesintheworldtousebiogastechnology.Farmersrecyclestraw,grassandanimalwastetomakebiogas.Thisrenewableenergyisusedinpeopleseverydaylife.abcChoosetherightpictureforeachparagraph._Electricvehiclesweredevelopedinthe1990s.Nowthereareelectricvehiclesinmanycountries.Theyareveryefficientandcostverylittletorun.Althoughelectricvehiclesproducenopollution,therewillbeanincreaseinelectricityneedsiftheyarewidelyused.aabc_InChina,thebest-knownmaglevtrainistheGerman-builtoneinShanghai.Ittakespeople30kmtotheairportinjust7minutesandreachesatopspeedof431kmperhour.Itisquietandquick.Thereisnowheelnoise,becausetherearenowheels.Maglevtrainsareveryenergyefficientanddonotpollutetheair.However,maglevguidepathsaremuchmoreexpensivethantraditionalstreetrailways.babc1.Whyisntcoalagoodmaterial?
2.Whatisthedisadvantageofusingnuclearpower?
3.Whatdoyouthinkofelectriccars?
4.Whatdoyouthinkofthemaglevtrain?
Becauseitisverydirtyandcausesacidrain.Becauseitcanbeverydangerous.Itisquietandquick.Theyareveryefficientandcostverylittletorun.Answerthefollowingquestionsaccordingto1a.Read1aagainandfilloutthefollowingtable.WaytoproducepowerAdvantageDisadvantagebiogaselectricvehiclemaglevtrainrenewableefficient,cheap,nopollutionquiet,quick,energyefficient,nopollutionItwillcauseanincreaseinelectricityneeds.muchmoreexpensivethantraditionaltrains.1bpowerstationsthemovementofwaterthewindpowersolarenergya.Therearemorethan3000powerstationsintheworldthatproduceelectricitybyburninggarbagetoheatwater.b.Peopleusethemovementofwatertoproduceelectricity.c.Windisusedforproducingelectricityinmanyplaces.d.Peopleproduceelectricityfromthesun.(b)(c)(d)(a)2aWhathabitsaregoodfortheenvironment?
Listasmanyasyoucan.Themoreyoulist,thegreeneryouare.GoodHabits1.Turnoffthelightswhenyouleavearoom.2.Walkorrideabikeinsteadoftakingabusorataxi.3.Takeaclothbagwhenyougoshopping.4.Dontuseplasticbags.3Homework:
1.Copythewordsandphrases.2.抄写单词和词组。
抄写单词和词组。
3.2.StudyCase:
导学案导学案4.Unit2Topic3SectionC3.Recite1aPassage.背诵背诵1a课文。
课文。
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