外研版八年级英语Languageinuseppt课件

9PopulationModuleUnit3LanguageinuseBeijingisahugecity.Ittakesanhourtogettherebybus.That’salmostonefifthoftheworld’spopulation.Thatmakesover131.4millionbirthsayear.Languagepractice1.Workinpairs.Matchthecountrieswiththeirpopulations.1Chinaa)4,437,0002theUSAb)22,956,0003Australiac)314,791,0004NewZealandd)1,370,537,000Whenyouseeatableorachart,lookcarefullyatthelabelsandgraphstomakesurethatyouunderstandwhattheyareshowing.Lookatthechartbelow.Whatisitcomparing?Whatcanyouconclude?Learningtolearn2.ReadyouranswerstoActivity1tothewholeclass.Chinahasapopulationof…Nowlistenandcheck.3.Readthechartandanswerthequestions.1Whichcityhadthelargestpopulationin2000?2Whichcity’spopulationwillincreasethemostfrom2000to2025?Tokyohadthelargestpopulationin2000.Mumbai'spopulationwillincreasethemostfrom2000to2025.3Whichcitywillhavealargerincreaseinitspopulation,NewYorkorMexicoCity?4Whichcity/citiesdoyouthinkwillhavethebiggestpopulationproblem?Why?Mexicocity.IthinkMumbaiwillhavethebiggestpopulationproblembecauseitspopulationwillincreasethefastest.4Completethepassagewitha,anorthewherenecessary.Minais(1)____eighteen-year-oldgirl.Shehasgot(2)____brotherand(3)_____sister.Minais(4)___oldestchildin(5)____family.Shelivesin(6)____verybigcity.Shehas(7)______jobin(8)_____hotel.Shehopesthatonedayshewillhave(9)_____chancetogoto(10)_____college.aanathetheaaaa/5Completethesentenceswiththecorrectformofthewordsinthebox.fewgoodmuchsmall1WebelievetheschoolsinArnwickareverygood,andweareworkingtomakethemeven_______.2Theirflatistoolargefortwopeople.Theywanttofinda_______one.3Annaalwaystalksaboutherideas.Ithinksheneedstolisten_______.4Therearealotofparksinthiscity.Ithinkthereare_______parksinalotofothercities.bettersmallermorefewer6Completethediagramshowingpopulationproblems.Usethewordsintheboxtohelpyou.aircitycountryhospitalincreasepublicservicetrafficwaterProblemsofArnwickProblems:Population___________Peoplearrivein_________thecityincreasesPeoplemovefrom_______thecountrysideEnvironmentalproblemsExample:______________________________________________________HealthproblemsExample:______________________________ProblemsforthegovernmentExamples:___________________________________________________________________________________________________①airpollutionwaterpollutiontoomuchtrafficrubbish③②notenoughhospitalsneedmoreschoolsandbusesneedbetterpublicservicesneedmorepolicetoprotectpeople7Completethepassagewiththewordsinthebox.countrysidepollutionpopulationspacetrafficOurworldisfacingmanyproblems.Twoofthebiggestareincreasingpopulationandpollution.The(1)_____________oftheworldisincreasingquickly.Whyisthishappening?Becausemorebabiesareborneveryyearandpopulationpeoplealsolivelonger.Manypeopleareleavingthe(2)_________toworkinthecities,butthereisnotenough(3)__________forsomanypeople.Anotherhugeproblemfortheworldis(4)__________.Thereissomuch(5)________ontheroadsthatinsomecitiestheairisheavilypolluted.Wemustworkhardertoprotectourworld.countrysidespacepollutiontrafficallovertheworldcloseddowninthefutureittakesnot…anymore8Completethesentenceswiththeexpressionsinthebox.1Growingpopulationisaproblem________________________.2ThepopulationofChinamaygrowmoreslowly.3Thesupermarketwhenabiggeroneopenedinthetown.allovertheworldinthefuturecloseddown4Usuallyanhourtogettherebybus.5Thetownhadalotofpopulationinthepastbutitisaproblem.ittakesnotanymore9Listenandchoosethebestsummary.Itischeapertoshareacarthantohaveapersonalcar.b)Peopleinacarclubdonotoftentakebuses,trainsortheunderground.c)TherearenocarclubsintheUS.d)Joiningcarclubsisgoodforyouandforthecity.√10Listenagainandchoosethecorrectanswer.1Joiningacarclubischeaper/moreexpensivethanhavingapersonalcar.2Peopleincarclubspayfor/donotpayforacarwhentheydrive.3Peopleincarclubssometimes/nevertakeabusorrideabike.4Peopleincarclubsprobablyare/arenothealthier.11Workinpairsanddiscussthisquestion.DoyouthinkcarclubswouldbepopularinChina?Why/Whynot?Inmyopinion,carclubs…AroundtheworldWorldpopulationandwaterWithmoreandmorepeopleintheworld,moreandmorewaterisused.Infact,wateruseisgrowingmorethantwiceasfastastheworld’spopulation!Asaresult,gettinggood,cleanwaterisbecomingaprobleminmanyplaces.Alotofwaterispollutedandinmanyareaspeoplehavetowalkalongwaytogetcleanfordailyuse.Morethan3.4millionpeopledieeachyearfromdrinkingandwashingwithpollutedwater.Solet’sdoeverythingwecantostopthepollutionandsavewater.12Workingroups.Preparetomakeyourgraph.Chooseacountryortownwhichinterestsyou.Itcouldbeyourhometown.Decidethetimeyouwanttolookat—forexample,now,tenyearsagoandtenyearsfromnow.Researchthepopulationofyourplaceinthoseyears.Writeyournotescarefully.Moduletask:makingagraph13Makeyourgraph.Decidehowyouwanttomakeyourgraph.Drawitandcolourit.Youcanalsomakeitonthecomputer.Labelitclearly.14Writeaparagraphtodescribeyourgraph.ThenPresentyourgraphtotheclass.PairworkBeijingisahugecity.北京是一个大都市。huge在这里表示“大，巨大”。另外表示“大”的还有“big,tall,vast,large,great”等。⑴说人、动物、树木等有生命的东西，主要用tall不用high例如atallwoman一个高个子妇女atallhorse一个高大的马Languagepoints⑵说一个不与地面接触的人和物的高时，要用high，而不用tall。比如人站在桌子上时，飞机飞上天时。例如Heishighupinthetree.他高高地爬在树上。Theplaneissohighinthesky.飞机在空中这么高。⑶指建筑物、山时要tall或high都可以，不过high的程度比tall高。⑷high可作副词，tall不能。⑸tall的反义词为short,high的反义词为low。e.g.Ourfactoryisabig/largeone.我们的工厂很大。（1）在表示物体重量、人的身高大或长大了时，只能用big。e.g.Theboxistoobigtocarry.这个盒子太大，拿不了。（2）在表示数量时，用large,不用big。e.g.Alargenumberofpeoplecamefromallpartsofthecountrytoseetheexhibition.从全国各地来了很多人观看展览。big和large都可表示具体事物形体或面积的大小,往往可以互换但big较口语化。E.g.TherehavebeenmanygreatpresidentsinAmericanhistory.美国历史上有很多伟大的总统。在表示抽象意思时,有也可用big,但great更为正式。e.g.Great/Bigchangeshavetakenplaceinourcountryinrecentyears.近几年来我们国家发生了很大变化。great的意思是“大、伟大的”多用于抽象意思。在修饰具体事物时带有一定的感情色彩。vast常用来指“广袤无垠的”、“面积广阔的”。e.g.avastforest,avastsea,avastdesert,vastdarkness等。huge指巨大的往往指体积。e.g.ahugestone,ahugebuilding等。Exercises用a,an,/,the完成下列句子。1.____Knowledgeispower.2.Iearn10dollars_____houras_____supermarketcashieronSaturdays.3.Theteacheraskedustowrite_____800-word-longcomposition.4.Imet_______Jay,butnot____oneyouknow./anaanathe5.Theyaretwins,sotheyareof_____age.6.Hehas_____finecollectionofpaintings.7.Idon’twanttohavewordswithyou.Iprefertohave____wordwithyou.aaaHavewordswithsb.与某人吵架Haveawordwithsb.与某人谈话1.Beijinghasgotpopulationofmorethan13.8million.A.theB.aC.anD./2.The_____trafficstoppedmefromgoingtoschoolontimeyesterday.Iwaslate!A.heavyB.crowdedC.fastD.quick选择题BA3.Mrs.Whiteisn’tfeelingwellthesedays.Shehasmade_____withthedoctoratthreethisafternoon.A.amovementB.aninterviewC.aquarrelD.anappointment4.Idon’tlikethosebigcitieswhichhavegot____peopleand____traffic.A.toomuch;toomanyB.manytoo;toomuchC.toomany;toomuchD.toomany;muchtooDC5.____Tim’shelp,Ifoundmypetdogintheend.Ishouldsaythankstohim.A.AlongwithB.WithoutC.ThankstoD.BecauseCHomeworkMakeagraphandsharewithyourclassmates.Reciteallthewordsandphrasesofthisunit.婴儿潮（babyboom），指的是在某一时期及特定地区，出生率大幅度提升的现象。历史上有记载的几次婴儿潮，通常是起因於有振奋人心的因素，像是农作物丰收、打赢战争及赢得体育竞赛等。但也有因为迷信的因素。在英文，形容婴儿潮时期出生的人为babyboomer。婴儿潮（babyboom）这个词的首次出现，主要是指美国第二次世界大战后的“4664”现象--从1946年至1964年，这18年间婴儿潮人口高达7800万人。在世界上大多数国家均有此现象。在日本，称呼此时期出生的人为“团块世代”団块の世代。新中国成立后共出现过三次婴儿潮，值得注意的是：目前人口众多的“80后”一代也已长大，陆续成家立业。在21世纪的前15年，中国将迎来新一轮的“婴儿潮”。以此类推，每次“婴儿潮”平均都会有20-30年的周期。　撒哈拉沙漠(英文名为：SaharaDesert)世界上阳光最多的地方，也是世界上最大和自然条件最为严酷的沙漠。撒哈拉沙漠是世界最大的沙漠，几乎占满非洲北部全部。东西约长4,800公里(3,000哩)，南北在1,300～1,900公里(800～1,200哩)之间，总面积约8,600,000平方公里(3,320,000平方哩)。撒哈拉沙漠西濒大西洋，北临阿特拉斯山脉和地中海，东为红海，南为萨赫勒一个半沙漠乾草原的过渡区。　　撒哈拉沙漠是世界上除南极洲之外最大的荒漠，位于非洲北部，气候条件极其恶劣，是地球上最不适合生物生长的地方之一。阿拉伯语撒哈拉意即“大荒漠”。1.世界最寒冷之极南极洲的年平均气温在－28℃，大陆内部的年平均气温在－40～－60℃，最低气温达－89.6℃2.暴风雪最强之地南极沿海地区的年平均风速为17～18米/秒，阵风可达40～50米/秒。最大风速达到100米/秒，被喻为“世界的风极”，“风暴杀手”。3.最干旱的大陆南极大陆的年平均降水量为55毫米，随着大陆纬度的增加降水量明显减少，大陆中部地区的年降水量仅有5毫米。在南极点附近，年降水量近于零，比非洲撒哈拉大沙漠的降水量还稀少。所以，南极是世界上最干旱的地区。其主要原因是固态的冰雪降落在大陆后形成巨大的冰盖，加之极端寒冷的气候和极少的日照量，冰盖的累积量还略大于消融量，形成干燥的“白色沙漠”。4.最荒凉孤寂的大陆南极大陆是世界上至今唯一没有常住居民的大陆。只有一些南极考察国家的科学考察人员短期的在南极工作，每年约2000人左右。 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