Unit2SavingtheEarthTopic3SectionC课件仁爱科普版英语九年级上册

Unit2SavingtheEarthTopic3

SectionC1.Somewords:technology,wheel,steel,require,German,guide,deep2.Somephrases:runout3.Somesentences:(1)Inmanycountries,peopleproducepowerfromcoal,butitisverydirtyandcausesacidrain.(2)Theywillneverrunoutsotheyarecalledrenewablesources.4.Talkabouttheadvantagesanddisadvantagesofsomekindsofenergy.Learningaims知识梳理Keypoints1.Somecountriesusenuclearenergytoproducepower.

usesth.todosth./

usesth.fordoing.使用某物来做某事

eg:

Peopleusedbambootowritewithinthepast.

在过去人们使用竹子写字。

Peopleusewindforproducingelectricity.

人们用风发电。Keypoints2.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”。

eg:Thefloorrequireswashing.地板该洗了。

*berequiredtodosth.表示主语必须（被要求）……eg:Studentsarerequiredtoattendclasses.

学生必须按规定上课。Keypoints3.It’stoosmalltoholdmanypeople,butthelargermodelswillbedevelopedinthenearfuture.它太小，不能承载太多的人，但在不久的将来，更大的车型将会被研制出来。①holdv.容纳，包含；eg:Theplaneholdsabout300passengers.这架飞机可容纳大约300名乘客。②holdv.拿着，抓住，抱住；eg:Hewasholdingthebabyinhisarms.他抱着婴儿。③holdv.召开，举行，进行（比赛，会议等）；eg:TheOlympicGamesareheldeveryfouryears.奥运会每四年举行一次。④holdv.(打电话时）等待，不挂断；eg:Holdon,please!请稍等。Keypoints4.Thetraincanreachatopspeedof431kmperhour.

这辆火车最高速度能达到431公里每小时。

reachaspeedof+具体速度

——达到某个速度拓展：ataspeedof+具体速度——以某个速度,可用high,low,full等形容词修饰speed。eg:Beijing-Tianjintrainreachesaspeedof300kmperhour.

北京至天津线火车时速达到每小时300千米。1.做一个环保使者2.应该做某事3.不应该做某事4.代替5.节省能量6.带一个布包7.关掉停止工作8.毕竟9.说起来容易做起来难10.行动胜于言语11.喊着求助1.beagreenerperson2.oughttodosth.=shoulddosth.3.oughtnottodosth.=shouldn'tdosth.4.insteadof(doingsth.)5.saveenergy6.takeaclothbag7.shutoff=turnoff8.afterallRevision9.Easiersaidthandone.10.Actionsspeaklouderthandone.11.cryforhelpReadingPractice1.Accordingtothepassage,whichofthefollowingisTRUE?_______A.ThemaglevtrainwasbuiltinShanghai.B.Wecantakemaglevtraineverywhere.C.Maglevtrainscausenonoise.D.Maglevtrainsonlyhaveadvantages.2.Fromthepassage,thewriterwantstotellus_______.A.thedisadvantagesofusingcoalB.weshoulduserenewableenergytosolveenergyproblemsC.everycoinhastwosidesD.Chinaisgoodatproducingpower3.Theunderlinedphrase“runout”inparagraph2means_______inChinese.A.用光B.跑出去C.生产D.制作4.Therenewableenergyrefersto________inthepassage.A.NuclearpowerB.MaglevtrainC.ElectricvehicleD.Biogas5.Ifweputthepassageintotwoparts,whichofthefollowingstructureisthebest?________A.Para.1

Para.2B.Para.3Para.4Para.1Para.2Para.3

Para.4C.Para.1Para.2Para.3Para.4CBADAparagraph2

paragraph3

Paragraph4

1a.Lookatthepictures.Doyouknowwhattheyare?Choosetherightpictureforeachparagraph.Keyphrases1.寻找新方法2.在20世纪90年代3.首批国家之一4.全世界的人5.在人们的日常生活中6.在不久的将来7.达到最高时速8.更贵得多9.用……来做10.被用作lookfornewwaysinthe1990soneofthefirstcountriespeopleallovertheworldinpeople’severyday/dailylivesinthenearfuturereachatopspeedmuchmoreexpensiveuse…todobeusedfordoing/todosth.1bRead1aandmatchthewordswiththepicturesonPage48.A.acidrainB.nuclearenergyC.biogasACB()()()1cRead1aagainandcompletethetable.ItemAdvantageDisadvantagebiogas

electricvehicle

maglevtrain

renewablelongprocessandhighcostforitsbuildingsaveenergy,nopollutiontoosmalltoholdmanypeople

quiet,quick,energy-efficient,nopollution

muchmoreexpensivethantraditionalsteelrailwaysTask1:readpara.3,4,and5quickly:(3minutes)Fast-readingChoosethetopicsentencesofeachparagraph

A.MeglevtrainB.BiogasC.ElectricvehiclesPara.3Para.4Para.5ABCTips:skimandfindtopicsentencesorhighfrequencywords.略读，找中心句或高频词ReadParagraph3again,andthenmarkTrue(T)orFalse(F).()It’sgoodthatpeopleproducepowerfromcoal.()Nuclearpowerisdangerous.Sowecan’tuseit.()Tosolvetheenergyproblem,peopleallovertheworldarelookingfornewwaystoproducepower.TFTParagraph1Careful-reading

Task2:readeachparagraphcarefullyandcompletethefollowingquestions:(8minutes)Tips：readcarefullyandmakefulluseofthedetailedinformation.2.Whatadvantagesdotheyhaveincommon?1.Howmanykindsofrenewableenergyarementionedinthispassage?Whatarethey?

Tips：scan查读.Four.Theyarethesun,wind,waves,theheatfromdeepintheearth.Causenopollution,andneverrunout.Careful-readingParagraph2Paragraph3Whatdofarmersusetomakebiogas?Isitthebiogasperfect?Why?Theyrecyclestraw,grass,andanimalwastetomakebiogas.No,itisn’t.Becauseitskeydisadvantageisthattheprocessrequiresalongtime(upto30days)andthecostishigh.Careful-readingElectricvehicleswere__________inthe1990s.OnApril11,2010,anewkindofelectricvehicle_______“Yezi”wasshowninthe2010ShanghaiWorldExpo.Itproduces_________fromthesun,thewindandCO2.Itcannotonlyprotecttheenvironmentbutalso_____energy.It’stoosmalltoholdmanypeople,but_______modelswillbedevelopedinthenearfuture.develop,electric,name,save,largedevelopednamedelectricitysavelargerParagraph4Careful-readingParagraph51.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.Careful-readingWindcanproduceelectricityinmanyplaces.Peopleusesunlighttoproduceelectricity.Seawavesareusedforproducingelectricity.Peopleusehotwaterorsteamfromdeepintheearthtoproduceelectricityandheatforfactories,schoolsandhomes.usesth.todosth. 使用某物做某事nuclearenergy

核能

allovertheworld

全世界lookfor

寻找biogastechnology

生物技术notonly...butalso

不但……而且too+adj.todosth.

太……而不能做某事Ittakessb.sth.todosth.

花费某人多长时间做某事

energy-efficient

节能Welearn:Talkabouttheadvantagesanddisadvantagesofsomekindsofenergy.Wecan:1.Somewords:

acid,nuclear,biogas,straw,renewable,disadvantage,process,electric,best-known,maglevtrain,per,efficient,path,steel,wave,source,worldwide,sunlight,steam,technology,require,German,wheel,guide,deep2.Somephrases:runout3.Somesentences:

(1)Inmanycountries,peopleproducepowerfromcoal,butitisverydirtyandcausesacidrain.(2)Theywillneverrunoutsotheyarecalledrenewablesources.

一、单项选择()1.Weallknowthatlearningalanguage______timeandeffort.A.requires B.reduces C.removes ()2.Wethinkhumanbeingsmayliveonthemooninthefuture.______,nooneissureaboutit.A.While B.Whatever C.However()3.—Whatdoyouthinkofyournewclassmate?—She______hasgoodgrades______isgladtohelpothers.A.too...to B.notonly...butalso C.so...thatACB一、单项选择()4.—Doyoutakeexerciseeveryday?—Yes.Itusually______meabouthalfanhourtodothat.A.spends B.costs C.takes()5.—Doyouthinkfreshwatercan______onearthoneday?—I’mafraidso,ifpeopledon’tsaveit.A.takeout