2023学年完整公开课版仁爱九年级Unit1Topic2SectionB

Unit1TheChangingWorldTopic2Thepopulationindevelopingcountriesisgrowingfaster.SectionBRevision:用never与ever,just,already与yet填空。1.---Haveyou_____traveledonthetrain?---Yes,Ihave.2.---Haveyoufinishedyourhomework?---Not_____.3.Wehaven’tfinishedourhomework_____.4.---Haveyou_____learnedEnglish?---Yes,I’ve________learnedalot.5.John’sfatherhas______borrowedsomepictures.6.Shehas_____seenhimbefore.Shedoesn’tknowhim.everyetyeteveralreadyjustnever人口,人数n.十亿num.(使)增加/大v./n.实现;达到;能够着;到达v.幸运地,运气好地adv.政策,方针n.俄罗斯n.措施,方法n.populationCheckNewWords到达

getto;

arrivein/atbillionincreasereachluckilypolicyRussiameasurenumbersinourlivesonehundredandfiftyyuanthousandsofpeopletwopointtwosix(2.26)meterstall

twothousandandeightOlympicGames1,000,000,000one

billion1,000,000one

million1,000one

thousand3.14three

point

onefour100one

hundred

Look,readandlearnFirst,trytoseparatethenumberingroupsofthreefromrighttoleft.Thenreaditinorderfrombilliontomillionandthousand.Howtoreadnumbers?1,000,000,000billionmillionthousand1

000000

0002Listenandreadthenumbers,payingspecialattentiontotheintonation.Thenreadtheothernumberswithyourpartner.1,000,000,000billionmillionthousand543.7fivehundredandforty-threepointseven

1562onethousand,fivehundredandsixty-two6004001sixmillion,fourthousandandone7198764502sevenbillion,onehundredandninety-eightmillion,sevenhundredandsixty-fourthousand,fivehundredandtwo973ninehundredandseventy-three3980threethousand,ninehundredandeighty98721ninety-eightthousand,sevenhundredandtwenty-one768540sevenhundredandsixty-eightthousand,fivehundredandforty1,000,000,000billionmillionthousand2346780twomillion,threehundredandforty-sixthousand,sevenhundredandeighty82346580eighty-twomillion,threehundredandforty-sixthousand,fivehundredandeighty405000000fourhundredandfivemillion5555555555fivebillion,fivehundredandfifty-fivemillion,fivehundredandfifty-fivethousand,fivehundredandfifty-five1,000,000,000billonmillionthousand①3,208②19,004

③6,302,320

④50,700.1⑤7,398,500

Readthenumbersasquicklyasyoucan.⑥406,000,000

⑦15,006,015⑧89,098,000⑨76,567,056

⑩17,602,018,000

7200909090The

population

isincreasingby

90millioneveryyear.=Theworldhasapopulationof7.2billion.Whatalargepopulation!7.23Workingroupsanddiscussthepopulationoftheworld.Thefollowingchartandquestionsmayhelpyou.1.Whichofthese5countrieshasthelargest/smallestpopulation?What’sthepopulationofit?2.Whatcanyoutellfromthepopulationindevelopingcountriesandindevelopedcountries?3.Whatproblemsdoesthelargepopulationcause?4.Whatmeasuresdoyouthinkshouldbetakentocontrolthepopulation?Chinahasthelargestpopulation.ThepopulationofChinais1.37billion.Canadahasthesmallestpopulation.ThepopulationofCanadais35million.Thepopulationindevelopingcountriesislargerthanthatindevelopedcountries.Thelargepopulationmaycauselesslivingspace,morepollutionandsoon.1bListento1aandmatchtheinformation.1.theworld2.China3.India4.theUSAA.321millionB.7.2billionC.1.37billionD.1.31billionMakesimilarconversationsaftertheexample.Example:A:What’sthepopulationoftheworld?B:It’sabout7.2billion.

（Theworldhasapopulationof7.2billion.）1.theworld2.China3.India4.theUSAA.321millionB.7.2billionC.1.37billionD.1.31billion1cRead1aandfillintheblanks.

Theworldhasapopulationof6.8billionanditisincreasingby__________everyyear._______hasthelargestpopulation.Ithasalreadyreached__________andIndiais_________with1.31billion.Thepopulationindevelopingcountriesis______andisgrowing________thanthatindevelopedcountries.Luckily,ourcountryhascarriedoutsomepoliciesto______theproblem.90millionChina1.37billionsecondlargerfastersolveKeyPhrases1.增加了…2.有…人口3.…的人口是多少？4.发展中的国家5.发达国家6.确实如此。7.实施8.解决问题increaseby…haveapopulationof…What’sthepopulationof…?developingcountriesdevelopedcountriesSoitis.carry…outsolvetheproblem★

increaseby+倍数或百分数

增加了…(eg.)Thecostoflivinghasincreasedbythreetimes.★increaseto+具体数字

增加到…(eg.)Thepriceofthehousehasincreasedto500,000.300300300300350150500KeypointsThesupermarketisverycrowded.Soitis.

So+主语+

be/情态动词/助动词“确实如此。”Lucydancesverywell.Shehascleanedtheroom.Soshedoes.Soshehas.Soitis.确实如此。KeypointsItwascoldyesterday._________.LucysingsEnglishwell.____________.KangkangisgoodatEnglish.___________.4.TheycansingsongsinFrench.__________.5.Helearntalotfromher.______________.SoitwasSoshedoesSoheisSo+主语

+be/情态动词/助动词.

“确实如此。”巩固练习SotheycanSohedidSo+be/情态动词/助动词+主语“……也是/一样/如此。”Choosethebestanswer.1.—______isthepopulationofRussia?—143million.

A.HowmuchB.HowmanyC.What

D.How2.Thereare______studentsinourschool.

A.threethousandsB.threethousandsofC.threethousandof

D.threethousand3.—Jennyalwayshelpsothers.—______.

A.Soisshe B.SosheisC.Sodoesshe D.Soshedoes4.ThepopulationofChinais__thanthatofJapan.

A.largerB.moreC.fewer D.lessCDDAExercises5.Thepopulationofthiscityhasincreased___twelvemillion.

A.toB.forC.byD.on6.TheweatherinChinaisdifferentfrom__inAustralia.

A.thatB.oneC.itD./7.Chinaisacountry__apopulationof1.3billion.