河南省平顶山市汝州市九年级英语上册 Unit 2 Saving the Earth Topic 3 What can we do to protect the environment Section C课件 （新版）仁爱版.ppt

unit2savingtheearthtopic3whatcanwedoathometoprotecttheenvironment sectionc areyouagreenerperson 1areadandunderstand lookatthepictures doyouknowwhattheyare choosetherightpictureforeachparagraph paragraph2 paragraph3 paragraph4 1bread1aandmatchthewordswiththepicturesonpage48 a acidrainb nuclearenergyc biogas a c b adj 原子核的 原子能的 酸雨 paragraph2 itskeydisadvantageisthattheprocessrequiresalongtime upto30days andthecostishigh 它最大的缺陷是生产过程需要很长时间 长达30天 和成本高 processn 步骤 过程v 加工 处理 requirev 需要 需求 require有两种用法 require doing sth 表示主语 该 了 如 thefloorrequireswashing 地板该洗了 berequiredtodosth 表示主语必须 被要求 如 studentsarerequiredtoattendclasses 学生必须按规定上课 paragraph3 electricvehicleswere inthe1990s onapril11 2010 anewkindofelectricvehicle yezi wasshowninthe2010shanghaiworldexpo itproduces fromthesun thewindandco2 itcannotonlyprotecttheenvironmentbutalso energy it stoosmalltoholdmanypeople but modelswillbedevelopedinthenearfuture develop electric name save large developed named electricity save larger paragraph4 1 去30公里以外的飞机场只需花费人们七分钟的时间 ittakespeoplejust7minutestogototheairport30kmaway 2 火车最高时速能够达到每小时431公里 thetraincanreachatopspeedof431kmperhour 1cread1aagainandcompletethetable renewable longprocessandhighcostforitsbuilding saveenergy nopollution toosmalltoholdmanypeople quiet quick energy efficient nopollution muchmoreexpensivethantraditionalsteelrailways coal dirty acidnuclearenergy dangerouselectricvehicles thesun thewindandco2 protecttheenvironment saveenergy smallmaglevtrain german built quiet quick nowheelnoise energy efficient notpollutetheairbiogastechnology straw grassandanimalwaste everydaylives require thehighcost retell1a german n 德国人 德语 germanyn 德国 pl germans wheeln 轮 车轮 轮子 e g theyaregermans andtheyarefromgermany languagepoints 2areadthepassagebelowandmatchthepictureswiththesentences thendiscussindetailtheuseofoneenergysource thesun wind wavesandheatfromdeepintheearthareenergysources theywillneverrunoutsotheyarecalledrenewablesources in2011 about16 ofenergyusedworldwidecamefromrenewablesources theuseofitisincreasingrapidlyeachyear deepadj 深的 厚的adv 深深地 在深处 runout用完 耗尽e g hehasrunoutoffood sohischildrenarehungry 2areadthepassagebelowandmatchthepictureswiththesentences thendiscussindetailtheuseofoneenergysource windcanproduceelectricityinmanyplaces peopleusesunlighttoproduceelectricity seawavesareusedforproducingelectricity peopleusehotwaterorsteamfromdeepintheearthtoproduceelectricityandheatforfactories schoolsandhomes 阳光 日光 水蒸汽 蒸汽 水汽 sunlightcanproducealotofenergy peoplebegantousetheenergyfromthesunlightindifferentwaysmanyyearsago wecanuseittowarmthehouseinthewinter toheatthewaterforbaths andtoproduceelectricity what smore wecanevenuseittorunvehiclesdirectlyinthenearfuture asisknowntous theenergyfromthesunlighthasalotofadvantages forexample itisclean renewableandnon polluting besides itdoesnoharmtoournature sowe dbetteruseitasmuchaspo