仁爱九年级上册UNIT1TOPIC2THEPOPULATIONINDEVELOPINGCOUNTRIESISGROWINGFASTERSECTIONB课件

Unit1TheChangingWorldSectionBTopic2Thepopulationindevelopingcountriesisgrowingfaster.Warming-upTheinformationaboutthepopulationindifferentcountriesLookandtalk1,370,000,000—1.37billionPre-listening321,000,000—321millionincreasev./n.

增加；增大ChinadevelopingcountriestheUSAdevelopedcountriesWhatalargepopulation!luckilyadv.

幸运地policyn.

政策Thepopulationindevelopingcountriesis________thanthatindevelopedcountries.largerReadandlearnPre-listeningonebillion,threehundredandseventymillionFirst,trytoseparatethenumberingroupsofthreefromrighttoleft.Thenreaditinorderfrombilliontomillionandthousand.1000000000,,,1,370,000,000thousandmillionbillion

1.37billiononepointthreesevenbillionReadandlearn2183065,366736,5478,736,0627,198,764,501Pre-listeningtwohundredandeighteenthreehundredandsixfivethousand,threehundredandsixty-sixsevenhundredandthirty-sixthousand,fivehundredandforty-seveneightmillion,sevenhundredandthirty-sixthousandandsixty-twosevenbillion,onehundredandninety-eightmillion,sevenhundredandsixty-fourthousand,fivehundredandoneReadandlearn543.7fivehundredandforty-threepointseven1562onethousand,fivehundredandsixty-two6004001sixmillion,fourthousandandone7198764502sevenbillion,onehundredandninety-eightmillion,sevenhundredandsixty-fourthousand,fivehundredandtwoPre-listening2Listenandreadthenumbers2Readthenumbers2346780twomillion,threehundredandforty-sixthousand,sevenhundredandeighty82346580eighty-twomillion,threehundredandforty-sixthousand,fivehundredandeighty405000000fourhundredandfivemillion5555555555fivebillion,fivehundredandfifty-fivemillion,fivehundredandfifty-fivethousand,fivehundredandfifty-fivePre-listening1bListento1aandmatchtheinformation.While-listening1.theworld2.China3.India4.theUSAA.321millionB.7.2billionC.1.37billionD.1.31billionMakesimilarconversationsaftertheexample.Post-listeningExample:A:What’sthepopulationoftheworld?B:It’sabout7.2billion.Post-listening

haveapopulationof

increaseby

What’sthepopulationof…?

Soitis.

carryout

theone-childpolicyLanguagepoints有……人口增长了…………的人口是多少？确实如此。VS.

Soisit.它也是这样。贯彻；执行独生子女政策

increaseto

增长到……e.g.

Thepopulationofthiscityisnearly300,000.这个城

市的人口将近三十万。e.g.Theworldhasapopulationof7.2billion.世界上有72

亿人口。“apopulationof+数量”表示人口数量。populationthepopulationof表示……的人口数，谓语动词用单数。Post-listeninge.g.ThepopulationofChinaisverylarge.中国人口众多。Thepopulationinthisareaisbecomingsmallerandsmaller.这个地区的人口越来越少。通常用large/big/small

来修饰。Languagepoints形容词、副词的比较级、最高级的构成规则：1.一般在形容词、副词后加er表示比较级，加est表示最高级。

small smaller smallest2.

以不发音的e结尾的，只加r表示比较级，加上t表示最高级。large larger largest3.以辅音字母+y结尾的，变y为i，再加er表示比较级；加est表示最高级。early earlier earliest4.重读闭音节单词，双写最后一个辅音字母，然后加er表示比较级；加est表示最高级。big bigger biggestPost-listeningReviewthecomparativedegreeandsuperlativedegreeofadjectivesoradverbs.5.在双音节和多音节的形容词和副词前加more表示比较级；加most表示最高级。happily morehappily mosthappily6.不规则的，如：good/well better bestbad/badly worse worstmany/much more mostlittle less leastPost-listeningReviewthecomparativedegreeandsuperlativedegreeofadjectivesoradverbs.

Theworldhasapopulationof7.2billionanditisincreasingby__________everyyear._______hasthelargestpopulation.Ithasalreadyreached__________andIndiais_________with1.31billion.Thepopulationindevelopingcountriesis______andisgrowing________thanthatindevelopedcountries.Luckily,ourcountryhascarriedoutsomepoliciesto______theproblem.1cRead1aandfillintheblanks.90millionChina1.37billionsecondlargerfastersolvePost-listening3Workingroupsanddiscussthepopulationoftheworld.1.Whichofthese5countrieshasthelargest/smallestpopulation?What’sthepopulationofit?2.Whatcanyoutellfromthepopulationindevelopingcountriesandindevelopedcountries?Chinahasthelargestpopulation.ThepopulationofChinais1.37billion.Canadahasthesmallestpopulation.ThepopulationofCanadais35million.Thepopulationindevelopingcountriesislargerthanthatindevelopedcountries.Post-listening3Workingroupsanddiscussthepopulationoftheworld.3.Whatproblemsdoesthelargepopulationcause?4.Whatmeasuresdoyouthinkshouldbetakentosolvethepopulationproblem?Thelargepopulationmaycauselesslivingspace,morepollutionandsoon.Post-listening1.—______isthepopulationofRussia?—143million.A.Howmuch B.Howmany C.What D.How2.Thereare______studentsinourschool.A.threethousands B.threethousandsofC.threethousandof D.threethousand3.—Jennyalwayshelpsothers.—______.A.Soisshe B.SosheisC.Sodoesshe D.Soshedoes4.ThepopulationofChinais______thanthatofJapan.A.larger B.more C.fewer D.lessCDDAPost-listeningChoosethebestanswe