外研版八年级上册M9Unit-1

Watchthevideoanddiscuss.Whatproblemcanyouseeinthevideo?What’shappeningtoourcity?Whocausespollution?Whatcanwedo?Thinkandspeak.I’msotired.Helpme!Helpme!What’shappeningtoourcitynow?crowdssmokepollutionheavytrafficnoisepopulationTherearesomanypeopleontheGreatWallthatyoucan’ttakephotos.Therearesomanypeoplethatwecan’tgetonthebus.Usewordsintheboxtodescribethephoto.noisepeoplespacetrafficListenandchoosethecorrectanswer.1.What'sthepopulationofBeijing?a)About11million.b)About13million.c)About20million.2.What'sthepopulationofChongqing?a)About28million.b)Morethan33million.c)About36million.cbWhataretheytalkingabout?Theyaretalkingabouttheincreasingpopulation.Listenandanswer.PeopleintheworldBabiesborneveryminuteBabiesborneveryyearPopulationofChinaPopulationoftheworldReadtheconversationandcompletethetable.over250131.4million1.37billion7billionListenagainandchecktheanswers.ReadandcheckwithTorF.1.Atthestartoflife,birthhappens.2.Whenwewantsomebodywaitforashorttime,weoftensay“Hangonaminute”.3.Makingnotesmeanswritingalongpassage.4.Wecancallalongpieceofwritingareport.5.Abillionisathousandmillion.TTFTTIcan’tbelieveit!Hangonaminute!Great!ReadandremembersomeeverydayEnglishsentences.我真是不敢相信！等一会。太棒了！—Thethree-year-oldboycanplayguitarverywell.—Ican’tbelieveit!—CanIleaveamessagetohim?—Hangonaminute,please!I’llfindapentowrite.—Let’sgoandhaveadrinkofcoffee.—Great!I’dliketogowithyou.•101•110•122•143•1,000•1,000,000•1,000,000,000onehundredandoneonehundredandtenonehundredandtwenty-twoonehundredandforty-threeonethousand（千）onemillion(百万）onebillion(十亿）Canyousaythesenumbers?1,000,000,000billionmillionthousand•123•1,234•12,345•123,345•1,234,567onehundredandtwenty-threeonethousand,twohundredandthirty-fourtwelvethousand,threehundredandforty-fiveonehundredandtwenty-threethousand,threehundredandforty-fiveonemilliontwohundredandthirty-fourthousandfivehundredandsixty-sevencomma逗号英语中四位数和四位数以上数字的读法：从数字的右端向左端数起，每三位数加一个逗号“,”。从右开始，第一个“,”前的数字后添加thousand，第二个“,”前面的数字后添加million，第三个“,”前的数字后添加billion。然后一节一节分别表示，两个逗号之间最大的数为百位数形式。•7,000•28,000•135,000•7,000,000•4,500,000•79,000,000•350,000,000•21,000,000,000Let’spractice!seventhousandtwenty-eightthousandonehundredandthirty-fivethousandsevenmillionfourmillionandfivehundredthousandseventy-ninemillionthreehundredandfiftymilliontwenty-onebillion2,648twothousand,sixhundredandforty-eight16,250,064sixteenmillion,twohundredandfiftythousandandsixty-four5,237,166,234fivebillion,twohundredandthirty-sevenmillion,onehundredandsixty-sixthousand,twohundredandthirty-four8,7422,463,1281,370,000,0002,000,030,000Listenandrepeatthenumbers.eightthousand,sevenhundredandforty-twotwomillion,fourhundredandsixty-threethousand,onehundredandtwenty-eightonebillion,threehundredandseventymilliontwobillionandthirtythousandCheckthestatementsyouagreewith.1.Therearetoomanypeopleintheworld.2.Theincreasingpopulationisthebiggestproblemintheworld.3.Peopleshouldnothavetoomanybabies.4.Acityshouldnotholdmorethanonemillionpeople.Workinpairs.Workingroupsanddiscussyouranswers.Topic:Peopleshouldn’thavetoomanybabies.A:Wethinkpeopleshouldn’thavetoomanybabies,because…B:Inouropinion,peopleshouldhavemorebabies.Ifthere’sonlyonechild,heorshemustfeelverylonely.Athomeheorshewillhavenosistersorbrotherstoplaywithortotalkwith…Workinpairs.Talkabouttheresultsofoverpopulation.1.Thereisnotenoughspace.2.Thereistoomuchtraffic,noiseandpollution.3.Alongwiththecrowds,therewillbesmokeandthetransportproblems.4.Iftherearetoomanypeople,theirworkwillbeinfluencedinthefuture.5.…