【文档说明】Unit1__Topic2__SectionB__精品课件九年级上册英语【仁爱版】.ppt，共(20)页，1.935 MB，由小喜鸽上传

转载请保留链接：https://www.ichengzhen.cn/view-104647.html

以下为本文档部分文字说明：

Unit1TheChangingWorldTopic2Thepopulationindevelopingcountriesisgrowingfaster.SectionBonehundredandfiftyyuanthousandsofp

eopletwopointtwosix(2.26)meterstalltwothousandandeightOlympicGames1,000,000,000onebillion1,000,000onemillion1,000onethousand3.14threepointonefour10

0onehundredFirst,trytoseparatethenumberingroupsofthreefromrighttoleft.Thenreaditinorderfrombilliontomillionandthousand.Howtoreadnumbers?1,000,0

00,000billionmillionthousand10000000002Listenandreadthenumbers,payingspecialattentiontotheintonation.Thenreadtheothernumber

swithyourpartner.1,000,000,000billionmillionthousand543.7fivehundredandforty-threepointseven1562onethousand,fivehundre

dandsixty-two6004001sixmillion,fourthousandandone7198764502sevenbillion,onehundredandninety-eightmillion

,sevenhundredandsixty-fourthousand,fivehundredandtwo973ninehundredandseventy-three3980threethousand,ninehundredandeighty98721ninety-eightthousand

,sevenhundredandtwenty-one768540sevenhundredandsixty-eightthousand,fivehundredandforty1,000,000,000billionmillionthousand2346780twom

illion,threehundredandforty-sixthousand,sevenhundredandeighty82346580eighty-twomillion,threehundredandforty-sixthousand,fivehun

dredandeighty405000000fourhundredandfivemillion5555555555fivebillion,fivehundredandfifty-fivemillion,fivehundredandfifty-fivethousand,f

ivehundredandfifty-five1,000,000,000billonmillionthousand6800808080Thepopulationisincreasingby80millioneveryyear.=Theworldhasapopulationof6.

8billion.Whatalargepopulation!1bListento1aandmatchtheinformation.1.theworld2.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.1.1billion1cRead1aandfillintheblanks.Theworldhasapopulati

onof6.8billionanditisincreasingby__________everyyear._______hasthelargestpopulation.Ithasalreadyreached________

__andIndiais_________with1.1billion.Thepopulationindevelopingcountriesis______andisgrowing________thanthatindevelopedcountries.Luckily,

ourcountryhascarriedoutthe___________policytocontrolthepopulation.80millionChina1.3billionsecondlargerfasterone-childThesupermarketisverycrow

ded.Soitis.So+主语+be/情态动词/助动词Lucydancesverywell.Shehascleanedtheroom.Soshedoes.Soshehas.Soitis.确实如此。A：Whatalargepopulation!Theworld…6.8billion.…

80millioneveryyear.B：Whichcountry…?A：China…reach…,andIndia…with….B：…theUSA?A：309million.B：Itshows…developingcountries…developedcountries.A：

…isgrowingfaster…B：Soitis.Thepopulationproblem…developingcountriesA：China…carryout…controlthepopulation.3Workingroupsanddiscussthepopulationoftheworl

d.Thefollowingchartandquestionsmayhelpyou.1.Whichofthese5countrieshasthelargest/smallestpopulation?Wh

at’sthepopulationofit?2.Whatcanyoutellfromthepopulationindevelopingcountriesandindevelopedcountries?3.Whatproblemsdo

esthelargepopulationcause?4.Whatmeasuresdoyouthinkshouldbetakentocontrolthepopulation?Chinahasthelargestpopulatio

n.ThepopulationofChinais1.3billion.Canadahasthesmallestpopulation.ThepopulationofCanadais34million.Thepopulationindevelopingcountriesislargerth

anthatindevelopedcountries.Thelargepopulationmaycauselesslivingspace,morepollutionandsoon.Choosethebestanswer.1.—______isthepo

pulationofRussia?—143million.A.HowmuchB.HowmanyC.WhatD.How2.Thereare______studentsinourschool.A.threethousandsB.threethousandso

fC.threethousandofD.threethousand3.—Jennyalwayshelpsothers.—______.A.SoissheB.SosheisC.SodoessheD.Soshedoes4.T

hepopulationofChinais______thanthatofJapan.A.largerB.moreC.fewerD.lessCDDA1.ReadnumbersinEnglish.2.Ta

lkaboutpopulationproblems.1.Somewords:population,billion,increase,reach,luckily,policy,Russia,measure2.Somephrases:increaseby,developingc

ountries,developedcountries,carryout,theone-childpolicy3.Somesentences:Whatalargepopulation!Theworldhasapopulationof6.8billion.Soitis.Hom

eworke.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.Thepo

pulationofChinaisverylarge.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）BACKpopulation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。increaseby+数字/倍数/百分数增加了……e.g.Thepriceoftheh

ousehasincreasedbythreetimes.increaseto+数字增加到……e.g.Thepriceofthehousehasincreasedto500000.250250250250250250500BACK