中考英语话题复习 Environment课件 牛津版.ppt

Revisionfor7AUnit3;7BUnit4;8BUnit5;9BUnit3increasetheriskofhighbloodpressure;makepeopleeasytogetangryorimpatient;influenceoursleepingquality;,environmentalproblems,plasticbags;disposalchopsticks/boxusesth.onceandthrowaway,waterpollution,water,Theimportanceofwater:WatercoversabouttwothirdsofEarth,butmostofthewaterintheworldisnotdrinkable.Peoplecannotlivewithoutwater.Iftheresnowater,welldieofthirst/ourlifewillbeinamess/farmerscantwaterthecropsandthecropswilldie,thenwellhavenofoodtoeat/firemencantputoutfires/Moreaboutwater:Ifabrokentapcanfillupacoffeecupin10minutes,itwillwasteover13,500litresofwaterinayear.Ifyouleavethewaterrunningwhile,youmight,water,Howcanwatergettoourhouse?Waterfallsfromthecloudsasrain.Itrunsintostreamsandrivers.Therivercarriesittoareservoirandpeoplecleanitupinawatertreatmentworks.Ittravelsinthepipesandgettoourhouse.Afterpeopleusethewater,itwillgotoasewageplant.Itispumpedintotheriverandflowstotheseaagain.Itrisesfromtheseatothesky.Itfallsasrainagain.,Howtoprotectourenvironment?,Plantmoretrees;Wheneveryouseelitter,suchascans,plasticbagsandcigaretteends,onthestreet,pickitup.Donotthrowpaint,oilorlitterdownyoursinkortoilet.Pickupyourdogswaste.Takehouseholdchemicals,wasteoilandbatteriestothespecificplacesatofficiallandfillsites.Donotthrowanyrubbishontotheground/intotheriver.Usebothsidesofpaper.Stopusingplasticbagsforshopping.Stopusingdisposalchopsticks/box.Walkasmuchaspossible;,Thegovernmentaswellasweshoulddosomething/takemeasures/actiontofightvariouspollutions.,recycle;reuse;Startoutsmall,Theimportanceoftrees,Treesarenaturalairconditioners.Theycoolourcitiesandcleantheair.Theytakeawaydustandchangecarbondioxideintooxygenforustobreathe.Treescommunicatewithoneanother,butwedontknowhow.Withouttrees,soilwouldbewashedawayandtherewouldbenofoodforustoeat.Withouttheshadefromtrees,Earthwouldgettoohottoliveon.Treesprovidealotofthingsforbothhumansandanimals.TreesforEarthismakingadifference.,Electricity,Electricityflowsthroughawire.Itslikewater,inaway.Wecanchangeelectricityintoenergysothatwecansee,hearorfeelit.movementenergysoundenergylightenergyheatenergy,hairdryerlightbulbmicrowaveovenelectricfancamerafridgeairconditionerbatterycharger充电器vacuum吸尘器mobile/cellphonemonitor,driver驱动器flashdisk移动盘laptop手提电脑desktopradioricecookerwashingmachineeclecticironman-madesatellite,Electricityinourdailylife,Electricityissaidtobeoneofthegreatestinventionsinhumanhistory.Today,almosteveryonearoundtheworlduseselectricityinonewayoranotherlightsourworldheatsourhomescooksourfoodgivesuslotsofhappinesscoolsourfoodinfridgedrivesundergroundtrainsmilkthecowchopthefoodWithoutelectricity,ourliveswouldbeverydifficult.,Whatcanelectricitydoforus?,Howcanweuseelectricitysafely?,safe;safely;safety;saveforyoursafety;safetyfirst;beonthesafesideHowtousericecookers,washingmachinesandmicrowavessafely?,Tellthedifference,cross,across,throughcross:v.横穿，横过她们乘船过河。Theycrossedtheriverbyboat.2.across:prep.横穿，横过20年前我横渡了长江。IswamacrosstheChangjiangRiver20yearsago.3.through:prep.贯通，直穿，透过他们缓慢地穿过森林。Theywalkedthroughthewoods.,inaway,inthisway,bytheway,onthewayinaway:在某种意义上在某种意义上，这是一部好电影。Inaway,hisway:用这种方法、方式用这种办法你可以学好英语。Inthisway,youcanlearnEnglishwell.3.bytheway:顺便说一下顺便问一下，你看过这部电影吗？Bytheway,haveyouseenthefilm?4.ontheway:在路上；在途中在回家的路上，父亲给我讲了一个故事。Onthewayhome,fathertoldmeastory.,Groupwork,YoucanusethefollowingpatternS1:Pollutionisworseandworseinourworld.Whattopicdoyouwanttotalkabout?S2:Iwanttotalkabout_.S1:Whatcause_?S2:(People)_.S1:Whatshouldwedo?S2:Inorderto_,weshould_,Showtime,Givesuggestions:First,weshouldSecond,wecanInaddition,wehadbetterAtlast,wemay/maynotShowopinions:IthinkInmyopinion/eyes,Isuggestthatweshould,suggestion,1.大量的雪使得整个地区都面临危险。2.各个家庭只能待在家里靠烧木头取暖。3.小兔子称起来只有0.4-2千克那么重，而且在刚出