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1、SectionB（录音）Unit1TheChangingWorldTopic2Whichcountryhasthelargestpopulation?numbersinourlifeonehundredandfiftyyuantwothousandandeightOlympicGamesmillionsofstarssince(自从）650millionyearsagoaboutonebillion(1,000,000,000)yearsoldtwopointtwosix(2.26)meterstall1,000,000,000onebillion1.34onepointthreefou
2、r100onehundred1,000onethousand1,000,000onemillion十亿点Look543.7fivehundredandforty-threepointseven768sevenhundredandsixty-eight6004001sixmillion,fourthousandandone7198764502sevenbillion,onehundredandninety-eightmillion,sevenhundredandsixty-fourthousand,fivehundredandtwoListenandSay（录音）5555555555fiv
3、ebillion,fivehundredandfifty-fivemillion,fivehundredandfifty-fivethousand,fivehundredandfifty-five2346780twomillion,threehundredandforty-sixthousand,sevenhundredandeighty405000000fortyhundredandfivemillionThereareabout1.3billionpeopleinChina.=Chinahasapopulationof1.3billion.What’sthepopulationofC
4、hina?A:What’sthepopulationofChina?B:It’sabout1.3billion.PairworkTalkaboutthechartpopulation(largesmall)集合名词某地整体人口是多少(作单数)强调具体成员,某地的部分人口(作复数）(e.g)Thepopulationofthiscityisnearly300000.这个城市的人口将近三十万。(e.g)80%ofthepopulationinChinaarefarmers.中国百分之八十的人口是农民。back6,500,000,000Whatalargepopulation!6.5bill
5、ionThepopulationisincreasingby80millioneveryyear.808080increaseby+倍数或百分数(e.g.)Thecostoflivinghasincreasedbythreetimes.increaseto+具体数字(e.g.)Thepriceofthehousehasincreasedto500000.300300300300350150500backWhichcountrieshavelargerpopula-tion,developingcountriesordevelop-edcountries?Developingcountri
6、es.2.WhathasChinaalreadydonetocontrolthepopulation?Chinahascarriedouttheone-childpolicy.1aListenreadandanswercarryout实行,进行,执行(e.g.)WewillcarryoutanewplantoimproveourEnglish.carry+代词+out(e.g.)It’seasytocarryitout.backA：Whatalargepopulation!Theworld…6.5billion.…80millioneveryyear.B：Whichcountry…?A：
7、China…with…,andIndia…with….B：…theU.S.A.?A：296million.B：Itshows…developingcountries…developedcountries.A：…growfaster…B：Soitis.Thepopulationproblem…developingcountriesA：China…carryout…controlthepopulation.Actoutthedialog
