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1、SectionBUnit1TheChangingWorldTopic2Whichcountryhasthelargestpopulation?numbersinourlifeonehundredandfiftyyuantwothousandandeightOlympicGamesmillionsofstarssince(自从）650millionyearsagoaboutonebillion(1,000,000,000)yearsoldtwopointtwosix(2.26)meterstall1,000,000,00
2、0onebillion1.34onepointthreefour100onehundred1,000onethousand1,000,000onemillion十亿点Look543.7fivehundredandforty-threepointseven1562onethousand,fivehundredandsixty-two6004001sixmillion,fourthousandandone7198764502sevenbillion,onehundredandninety-eightmillion,seve
3、nhundredandsixty-fourthousand,fivehundredandtwo1.34onepointthreefour100onehundred1,000onethousand1,000,000onemillion1,000,000,000onebillionListenandSay（录音p12-2a）1.34onepointthreefour100onehundred1,000onethousand1,000,000onemillion1,000,000,000onebillion543fivehu
4、ndredandforty-three3980threethousand,ninehundredandeighty98721ninety-eightthousand,sevenhundredandtwenty-one768540sevenhundredandsixty-eightthousand,fivehundredandfortySay1.34onepointthreefour100onehundred1,000onethousand1,000,000onemillion1,000,000,000onebillio
5、n5555555555fivebillion,fivehundredandfifty-fivemillion,fivehundredandfifty-fivethousand,fivehundredandfifty-five2346780twomillion,threehundredandforty-sixthousand,sevenhundredandeighty405000000fortyhundredandfivemillionThereareabout1.3billionpeopleinChina.=China
6、hasapopulationof1.3billion.What’sthepopulationofChina?LookandpracticeA:What’sthepopulationofChina?B:It’sabout1.3billion.PairworkTalkaboutthechart6,800,000,000Whatalargepopulation!Thepopulationisincreasingby80millioneveryyear.808080Whichcountrieshavelargerpopula-
7、tion,developingcountriesordevelop-edcountries?Developingcountries.2.WhathasChinaalreadydonetocontrolthepopulation?Chinahascarriedouttheone-childpolicy.Watchandanswer（视频p11-1a）A：Whatalargepopulation!Theworld…6.8billion.…80millioneveryyear.B：Whichcountry…?A：China…
8、with…,andIndia…with….B：…theU.S.A.?A：296million.B：Itshows…developingcountries…developedcountries.A：…growfaster…B：Soitis.Thepopulationproblem…developingcountriesA：China
