中考英语话题复习 Environment课件 牛津版.ppt

Revisionfor7AUnit3 7BUnit4 8BUnit5 9BUnit3 4 Topic2Environment sandstormmistgreenhouseeffectglobalwarmingcarbondioxide noisepollution whitepollution airpollution hurtpeople shearing increasetheriskofhighbloodpressure makepeopleeasytogetangryorimpatient influenceoursleepingquality environmentalproblems plasticbags disposalchopsticks boxusesth onceandthrowaway waterpollution water Theimportanceofwater WatercoversabouttwothirdsofEarth butmostofthewaterintheworldisnotdrinkable Peoplecannotlivewithoutwater Ifthere snowater we lldieofthirst ourlifewillbeinamess farmerscan twaterthecropsandthecropswilldie thenwe llhavenofoodtoeat firemencan tputoutfires 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 Pickupyourdog swaste Takehouseholdchemicals wasteoilandbatteriestothespecificplacesatofficiallandfillsites Donotthrowanyrubbishontotheground intotheriver Usebothsidesofpaper Stopusingplasticbagsforshopping Stopusingdisposalchopsticks box Walkasmuchaspossible Thegovernmentaswellasweshoulddosomething takemeasures actiontofightvariouspollutions recycle reuse Startoutsmall Theimportanceoftrees Treesarenaturalairconditioners Theycoolourcitiesandcleantheair Theytakeawaydustandchangecarbondioxideintooxygenforustobreathe Treescommunicatewithoneanother butwedon tknowhow Withouttrees soilwouldbewashedawayandtherewouldbenofoodforustoeat Withouttheshadefromtrees Earthwouldgettoohottoliveon Treesprovidealotofthingsforbothhumansandanimals TreesforEarthismakingadifference Electricity Electricityflowsthroughawire It slikewater 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 itisagoodfilm 2 inthisway 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 weshould Second wecan Inaddition wehadbetter Atlast wemay maynot Showopinions Ithink Inmyopinion 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 而且在刚出生的时候他们看不到东西 4 一天一只丹顶鹤走丢了 这个女孩子就不停的没日没夜的找这只丢失的鸟 5 一只成年大熊猫一天可吃多大30公斤的竹子 6 熊猫在野外大约可以活到20岁 但是如果在动物园他们可以大概活到35岁 7 大树可以吸收一些有害的物质同时释放氧气 8 很多生物失去了自己的家园就是因为森林的过度砍伐 deforestation 9 在我们日常生活中 很多家具都是有木头制成的