Unit2SavingtheEarthTopic3

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

usesth.todosth./

usesth.fordoing.使用某物來做某事

eg:

Peopleusedbambootowritewithinthepast.

在過去人們使用竹子寫字。

Peopleusewindforproducingelectricity.

人們用風(fēng)發(fā)電。Keypoints2.Itskeydisadvantageisthattheprocessrequiresalongtime(upto30days)andthecostishigh.它最大的缺陷是生產(chǎn)過程需要很長時間（長達30天）和成本高。processn.步驟，過程v.加工，處理requirev.需要，需求require有兩種用法：

*require(doing)sth.表示主語“該……了”。

eg:Thefloorrequireswashing.地板該洗了。

*berequiredtodosth.表示主語必須（被要求）……eg:Studentsarerequiredtoattendclasses.

學(xué)生必須按規(guī)定上課。Keypoints3.It’stoosmalltoholdmanypeople,butthelargermodelswillbedevelopedinthenearfuture.它太小，不能承載太多的人，但在不久的將來，更大的車型將會被研制出來。①holdv.容納，包含；eg:Theplaneholdsabout300passengers.這架飛機可容納大約300名乘客。②holdv.拿著，抓住，抱??；eg:Hewasholdingthebabyinhisarms.他抱著嬰兒。③holdv.召開，舉行，進行（比賽，會議等）；eg:TheOlympicGamesareheldeveryfouryears.奧運會每四年舉行一次。④holdv.(打電話時）等待，不掛斷；eg:Holdon,please!請稍等。Keypoints4.Thetraincanreachatopspeedof431kmperhour.

這輛火車最高速度能達到431公里每小時。

reachaspeedof+具體速度

——達到某個速度拓展：ataspeedof+具體速度——以某個速度,可用high,low,full等形容詞修飾speed。eg:Beijing-Tianjintrainreachesaspeedof300kmperhour.

北京至天津線火車時速達到每小時300千米。1.做一個環(huán)保使者2.應(yīng)該做某事3.不應(yīng)該做某事4.代替5.節(jié)省能量6.帶一個布包7.關(guān)掉停止工作8.畢竟9.說起來容易做起來難10.行動勝于言語11.喊著求助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.生產(chǎn)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.尋找新方法2.在20世紀(jì)90年代3.首批國家之一4.全世界的人5.在人們的日常生活中6.在不久的將來7.達到最高時速8.更貴得多9.用……來做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.略讀，找中心句或高頻詞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查讀.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公里以外的飛機場只需花費人們七分鐘的時間。Ittakespeoplejust7minutestogototheairport30kmaway.2.火車最高時速能夠達到每小時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

尋找biogastechnology

生物技術(shù)notonly...butalso

不但……而且too+adj.todosth.

太……而不能做某事Ittakessb.sth.todosth.

花費某人多長時間做某事

energy-efficient

節(jié)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、單項選擇()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、單項選擇()4.—Doyoutakeexerciseeveryday?—Yes.Itusually______meabouthalfanhourtodothat.A.spends B.costs C.takes()5.—Doyouthinkfreshwatercan______onearthoneday?—I’mafraidso,ifpeopledon’tsaveit.A.takeout