九年级英语上册 Unit 2 Topic 3 What can we do to protect the environment Section C课件 （新版）仁爱版.ppt

Unit2Topic3Whatkindsofthingscanwedotoprotecttheenvironment?,SectionC,Usebut,and,whiletoanswerthefollowingquestions.Whatactivitiesshouldwedotoprotecttheenvironment?Whatactivitiesshouldntwedotoprotecttheenvironment?,Lookupthesewordsinadictionary.,power,acidrain,nuclear,renewable,electric,efficient,电力；动力；力,酸雨,原子核的，原子能的；核动力的,可更新的,电动的，用电的,效率高的；有能力的,Windisusedforproducingelectricityinmanyplaces.,Lookatthefollowingpicturesandguessthemeaningoftheunderlinedword.,Moreandmorepeopleareinterestedinelectriccars.,Lookatthefollowingpicturesandguessthemeaningoftheunderlinedword.,ThemaglevtraininShanghaiusesmagnets.Themagnetspushthetrainforward.,Lookatthefollowingpicturesandguessthemeaningoftheunderlinedwords.,peopleproducepowerfromcoal,butitisverydirtyandcausesacidrain.,Lookatthefollowingpicturesandguessthemeaningoftheunderlinedwords.,Nuclearpoweriscleanbutitisverydangerous.,Lookatthefollowingpicturesandguessthemeaningoftheunderlinedword.,Read1aandanswerthefollowingquestions.Whyisntcoalagoodmaterial?Whatisthedisadvantageofusingnuclearpower?Whatdoyouthinkofelectriccars?Whatdoyouthinkofthemaglevtrain?,Itisverydirtyandcausesacidrain.,Nuclearpowercanbeverydangerous.,Itisquietandquick.,Theyareveryefficientandcostverylittletorun.,Choosetherightpictureforeachparagraphof1a.,a,b,c,Chinaisoneofthefirstcountriesintheworldtousebiogastechnology.Farmersrecyclestraw,grassandanimalwastetomakebiogas.Thisrenewableenergyisusedinpeopleseverydaylife.,Electricvehiclesweredevelopedinthe1990s.Nowthereareelectricvehiclesinmanycountries.Theyareveryefficientandcostverylittletorun.Althoughelectricvehiclesproducenopollution,therewillbeanincreaseinelectricityneedsiftheyarewidelyused.,InChina,thebest-knownmaglevtrainistheGerman-builtoneinShanghai.Ittakespeoplejust7minutestogototheairport30kmawayandreachesatopspeedof431kmperhour.Itisquietandquick.Thereisnowheelnoise,becausetherearenowheels.Maglevtrainsareveryenergyefficientanddonotpollutetheair.However,maglevguidepathsaremuchmoreexpensivethantraditionalsteelrailways.,1b,Workalone,Read1aagainandfilloutthefollowingtable.,renewable,efficient,cheap,nopollution,quiet,quick,energryefficient,nopollution,Itwillcauseanincreaseinelectricityneeds.,muchmoreexpensivethantraditionaltrains.,a.Therearemorethan3000powerstationsintheworldthatproduceelectricitybyburninggarbagetoheatwater.b.Peopleusethemovementofwatertoproduceelectricity.c.Windisusedforproducingelectricityinmanyplaces.d.Peopleproduceelectricityfromthesun.,(),(),(),(),图文搭配,a,b,d,c,Fillintheblanksusingbut,and,thoughandwhile.1._itsraininghard,hekeepsonworkingoutside.2.Kangkangcansolvetheproblem,_Icant.3.Mr.Linisverykind_heisveryhumorous.4.Thesuitfitsmewell_Icantaffordit.,Though,while,and,but,Usebut,and,thoughandwhiletodescribethewaysofproducingpower.,3,Writtenwork,Whatgoodhabitsprotecttheenvironment?Listasmanyasyoucan.Themoreyoulist,thegreeneryouare.,GoodHabits,1.Turnoffthelightswhenyouleavearoom.,2.Walkorrideabikeinsteadoftakingabusorataxi.,3.Takeaclothbagwhenyougoshopping.,4.Dontuseplasticbags.,UsefulexpressionsInmanycountries,peopleproducepowerfromcoalornuclearenergy.ItsapitythatitstooexpensivetouseinmostofChin