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1、Unit1TheChangingWorldTopic2Thepopulationindevelopingcountriesisgrowingfaster.SectionB课件2Look,readandlearn1,000,000,000onebillion1,000,000onemillion1,000onethousand3.14threepointonefour100onehundred1,000,000,000billionmillionthousand543.7fivehundredandforty-thre
2、epointseven1562onethousand,fivehundredandsixty-two6004001sixmillion,fourthousandandone7198764502sevenbillion,onehundredandninety-eightmillion,sevenhundredandsixty-fourthousand,fivehundredandtwo973ninehundredandseventy-three3980threethousand,ninehundredandeighty
3、98721ninety-eightthousand,sevenhundredandtwenty-one768540sevenhundredandsixty-eightthousand,fivehundredandforty1,000,000,000billionmillionthousand2346780twomillion,threehundredandforty-sixthousand,sevenhundredandeighty82346580eighty-twomillion,threehundredandfo
4、rty-sixthousand,fivehundredandeighty405000000fourhundredandfivemillion5555555555fivebillion,fivehundredandfifty-fivemillion,fivehundredandfifty-fivethousand,fivehundredandfifty-five1,000,000,000billonmillionthousand1bListento1aandmatchtheinformation.1.theworld2
5、.China3.India4.theUSAA.309millionB.6.8billionC.1.3billionD.1.1billionMakesimilarconversationsaftertheexample.Example:A.:What’sthepopulationoftheworld?B:It’sabout6.8billion.1.theworld2.China3.India4.theUSAA.309millionB.6.8billionC.1.3billionD.1.1billion1cRead1aa
6、ndfillintheblanks.Theworldhasapopulationof6.8billionanditisincreasingby__________everyyear._______hasthelargestpopulation.Ithasalreadyreached__________andIndiais_________with1.1billion.Thepopulationindevelopingcountriesis______andisgrowing________thanthatindeve
7、lopedcountries.Luckily,ourcountryhascarriedoutthe___________policytocontrolthepopulation.80millionChina1.3billionsecondlargerfasterone-childThesupermarketisverycrowded.Soitis.So+主语+be/情态动词/助动词Lucydancesverywell.Shehascleanedtheroom.Soshedoes.Soshehas.Soitis.确实如
8、此。两个句子的主语是同一个人！Learnbyheart:PracticesChoosethebestanswer.C1.---______isthepopulationofRussia?---143million.A.HowmuchB.HowmanyC.WhatD.How2.Thereare______studentsinourschool.A
