资源描述：
《unit 1 topic 2 section b》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。
1、SectionBUnit1TheChangingWorldTopic2Thepopulationindevelopingcountriesisgrowingfaster.numbersinourlivesonehundredandfiftyyuanthousandsofpeopletwopointtwosix(2.26)meterstalltwothousandandeightOlympicGames1,000,000,000onebillion1,000,000onemillion1,000onethousand3.14threepointo
2、nefour100onehundredLook,readandlearnFirst,trytoseparatethenumberingroupsofthreefromrighttoleft.Thenreaditinorderfrombilliontomillionandthousand.Howtoreadnumbers?1,000,000,000billionmillionthousand10000000002Listenandreadthenumbers,payingspecialattentiontotheintonation.Thenre
3、adtheothernumberswithyourpartner.1,000,000,000billionmillionthousand543.7fivehundredandforty-threepointseven1562onethousand,fivehundredandsixty-two6004001sixmillion,fourthousandandone7198764502sevenbillion,onehundredandninety-eightmillion,sevenhundredandsixty-fourthousand,fi
4、vehundredandtwo973ninehundredandseventy-three3980threethousand,ninehundredandeighty98721ninety-eightthousand,sevenhundredandtwenty-one768540sevenhundredandsixty-eightthousand,fivehundredandforty1,000,000,000billionmillionthousand2346780twomillion,threehundredandforty-sixthou
5、sand,sevenhundredandeighty82346580eighty-twomillion,threehundredandforty-sixthousand,fivehundredandeighty405000000fourhundredandfivemillion5555555555fivebillion,fivehundredandfifty-fivemillion,fivehundredandfifty-fivethousand,fivehundredandfifty-five1,000,000,000billonmillio
6、nthousand6800808080Thepopulationisincreasingby90millioneveryyear.=Theworldhasapopulationof7.2billion.Whatalargepopulation!1bListento1aandmatchtheinformation.1.theworld2.China3.India4.theUSAA.321millionB.7.2billionC.1.37billionD.1.31billionMakesimilarconversationsaftertheexam
7、ple.Example:A.:What’sthepopulationoftheworld?B:It’sabout7.2billion.1.theworld2.China3.India4.theUSAA.321millionB.7.2billionC.1.37billionD.1.31billion1cRead1aandfillintheblanks.Theworldhasapopulationof7.2billionanditisincreasingby__________everyyear._______hasthelargestpopula
8、tion.Ithasalreadyreached__________andIndiais_________with1.1billion.Thepopu
