Unit1Topic2SectionB

SectionB,Unit1TheChangingWorld,Topic2Thepopulationindevelopingcountriesisgrowingfaster.,numbersinourlives,onehundredandfiftyyuan,thousandsofpeople,twopointtwosix(2.26)meterstall,twothousandandeightOlympicGames,1,000,000,000onebillion,1,000,000onemillion,1,000onethousand,3.14threepointonefour,100onehundred,Look,readandlearn,First,trytoseparatethenumberingroupsofthreefromrighttoleft.Thenreaditinorderfrombilliontomillionandthousand.,Howtoreadnumbers?,1,000,000,000,billion,million,thousand,1000000000,2Listenandreadthenumbers,payingspecialattentiontotheintonation.Thenreadtheothernumberswithyourpartner.,543.7fivehundredandforty-threepointseven1562onethousand,fivehundredandsixty-two6004001sixmillion,fourthousandandone7198764502sevenbillion,onehundredandninety-eightmillion,sevenhundredandsixty-fourthousand,fivehundredandtwo,973ninehundredandseventy-three3980threethousand,ninehundredandeighty98721ninety-eightthousand,sevenhundredandtwenty-one768540sevenhundredandsixty-eightthousand,fivehundredandforty,2346780twomillion,threehundredandforty-sixthousand,sevenhundredandeighty82346580eighty-twomillion,threehundredandforty-sixthousand,fivehundredandeighty405000000fourhundredandfivemillion5555555555fivebillion,fivehundredandfifty-fivemillion,fivehundredandfifty-fivethousand,fivehundredandfifty-five,6800,80,80,80,Thepopulationisincreasingby80millioneveryyear.,=Theworldhasapopulationof6.8billion.,Whatalargepopulation!,1bListento1aandmatchtheinformation.,Makesimilarconversationsaftertheexample.,Example:A.:Whatsthepopulationoftheworld?B:Itsabout6.8billion.,increaseby+数字/倍数/百分数增加了e.g.Thepriceofthehousehasincreasedbythreetimes.increaseto+数字增加到e.g.Thepriceofthehousehasincreasedto500000.,250,250,250,250,250,250,500,BACK,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。,e.g.ThepopulationofChinaisverylarge.中国人口众多。Thepopulationinthisareaisbecomingsmallerandsmaller.这个地区的人口越来越少。,强调人口的具体分布或构成(作复数）,BACK,population,集合名词某地整体人口的数量(作单数）,通常用large/big/small来修饰。,Thesupermarketisverycrowded.,Soitis.,So+主语+be/情态动词/助动词,Lucydancesverywell.,Shehascleanedtheroom.,Soshedoes.,Soshehas.,Soitis.,Languagepoints,确实如此。,1cRead1aandfillintheblanks.,Theworldhasapopulationof6.8billionanditisincreasingby_everyyear._hasthelargestpopulation.Ithasalreadyreached_andIndiais_with1.1billion.Thepopulationindevelopingcountriesis_andisgrowing_thanthatindevelopedcountries.Luckily,ourcountryhascarriedoutthe_policytocontrolthepopulation.,80million,China,1.3billion,second,larger,faster,one-child,Choosethebestanswer.1._isthepopulationofRussia?143million.A.HowmuchB.HowmanyC.WhatD.How2.Thereare_studentsinourschool.A.threethousandsB.threethousandsofC.threethousandofD.threethousand3.Jennyalwayshelpsot