仁愛九年級上冊UNIT1TOPIC2THEPOPULATIONINDEVELOPINGCOUNTRIESISGROWINGFASTERSECTIONB課件

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

增加；增大ChinadevelopingcountriestheUSAdevelopedcountriesWhatalargepopulation!luckilyadv.

幸運(yùn)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……人口增長了…………的人口是多少？確實(shí)如此。VS.

Soisit.它也是這樣。貫徹；執(zhí)行獨(dú)生子女政策

increaseto

增長到……e.g.

Thepopulationofthiscityisnearly300,000.這個(gè)城

市的人口將近三十萬。e.g.Theworldhasapopulationof7.2billion.世界上有72

億人口?！癮populationof+數(shù)量”表示人口數(shù)量。populationthepopulationof表示……的人口數(shù)，謂語動(dòng)詞用單數(shù)。Post-listeninge.g.ThepopulationofChinaisverylarge.中國人口眾多。Thepopulationinthisareaisbecomingsmallerandsmaller.這個(gè)地區(qū)的人口越來越少。通常用large/big/small

來修飾。Languagepoints形容詞、副詞的比較級、最高級的構(gòu)成規(guī)則：1.一般在形容詞、副詞后加er表示比較級，加est表示最高級。

small smaller smallest2.

以不發(fā)音的e結(jié)尾的，只加r表示比較級，加上t表示最高級。large larger largest3.以輔音字母+y結(jié)尾的，變y為i，再加er表示比較級；加est表示最高級。early earlier earliest4.重讀閉音節(jié)單詞，雙寫最后一個(gè)輔音字母，然后加er表示比較級；加est表示最高級。big bigger biggestPost-listeningReviewthecomparativedegreeandsuperlativedegreeofadjectivesoradverbs.5.在雙音節(jié)和多音節(jié)的形容詞和副詞前加more表示比較級；加most表示最高級。happily morehappily mosthappily6.不規(guī)則的，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