Unit 1 Topic 2 Section B【知識(shí)精講精研】九年級(jí)英語(yǔ)上冊(cè)課件（仁愛版）

Unit1TheChangingWorldTopic2

Thepopulationindevelopingcountriesisgrowingfaster.SectionB單詞關(guān)Newwords:1.populationn.人口，人數(shù)

2.billionnum.

十億3.increasev.（使）增加，（使）增大n.增加，增大4.reachv.實(shí)現(xiàn)；夠得著；到達(dá)5.luckilyadv.幸運(yùn)地6.policyn.政策，方針7.Russian.俄羅斯8.measuren.措施，方法Numbersinourlives

onehundredandfiftyyuan

TheWinterOlympicGamesintwothousandandtwenty-two

thousandsofpeopleonepointsevenfive(1.75)meterstall1,000,000,000one

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-five1,000,000,000billonmillionthousand課文關(guān)

Therearesomanypeople!Whatalargepopulation!形容人口多用large/big修飾，形容人口少用small

修飾6800909090The

population

isincreasingby

90millioneveryyear.=Theworldhasapopulationof7.2billion.Whatalargepopulation!1bListento1aandmatchtheinformation.1.theworld2.China3.India4.theUSAA.321millionB.7.2billionC.1.37billionD.1.31billionMakesimilarconversationsaftertheexample.Example:A.:What’sthepopulationoftheworld?B:It’sabout7.2billion.1.theworld2.China3.India4.theUSAA.321millionB.7.2billionC.1.37billionD.1.31billion(Kangkangisreadingareportonpopulationinthenewspaper)Kangkang:Wow!Whatalargepopulation!Maria:What?Kangkang:Look,itsaystheworldhasapopulationof7.2billion.Anditisincreasingby90millioneveryyear.Maria:Mmm,that’sreallyalot.Whichcountryhas

thelargestpopulation?Kangkang:Chinahasthelargestpopulation.Ithasalreadyreached1.37billion,andIndiaissecondwith1.31billion.Maria:What’sthepopulationoftheUSA?Kangkang:321million.Maria:Oh,Isee.Itshowsthatthepopulationindevelopingcountriesislargerthanthat

indevelopedcountries,doesn’tit?Kangkang:Yes.What’smore,thepopulationindevelopingcountriesisgrowingfaster.thelargestpopulation?Maria:Soitis.Thepopulationproblemhasbecomemoreseriousindevelopingcountries.Kangkang:Luckily.Chinahasalreadycarriedoutsomepolicies

tosolvetheproblem.1cRead1aandfillintheblanks.

Theworldhasapopulationof7.2billionanditisincreasingby__________everyyear._______hasthelargestpopulation.Ithasalreadyreached__________andIndiais_________with1.27billion.Thepopulationindevelopingcountriesis______andisgrowing________thanthatindevelopedcountries.Luckily,ourcountryhascarriedoutsomepoliciesto______thepopulation.90millionChina1.37billionsecondlargerfastercontrol1aListen，lookandsay.增長(zhǎng)了...增長(zhǎng)到...有...人口發(fā)展中國(guó)家實(shí)施采取措施做某事確實(shí)如此increaseby...increasetohaveapopulationof...developingcountriescarryouttakemeasurestodosth.Soitis.Read1acarefullyandfindthephrases.

3.

Workingroupsanddiscussthepopulationoftheworld.Thefollowingchartandquestionsmayhelpyou.1.Whichofthese5countrieshasthelargest/smallestpopulation?What’sthepopulationofit?2.Whatcanyoutellfromthepopulationindevelopingcountriesandindevelopedcountries?3.Whatproblemsdoesthelargepopulationcause?4.Whatmeasuresdoyouthinkshouldbetakentosolvethepopulationproblem?Thepopulationindevelopingcountriesislargerthanthatindevelopedcountries.Chinahasthelargestpopulationwith1.37billion.Canadahasthesmallestpopulationwith35million.Thelargepopulationmaycauselesslivingspace,morepollutionandsoon.語(yǔ)法關(guān)Thesupermarketisverycrowded.Soitis.So+主語(yǔ)+

be/情態(tài)動(dòng)詞/助動(dòng)詞（表示對(duì)上文情況的肯定和同意，意為“確實(shí)如此”）Lucydancesverywell.Shehascleanedtheroom.Soshedoes.Soshehas.1.Soitis.

確實(shí)如此。—Johnstudiesveryhard.—____________A.Neitherdoeshe.B.Sodoeshe.C.Sohedoes.D.Soheis.Ce.g.ThepopulationofChinaisverylarge.中國(guó)人口眾多。Thepopulationinthisareaisbecomingsmallerandsmaller.

這個(gè)地區(qū)的人口越來(lái)越少。2.（1）population的用法①population通常用large/big/small來(lái)修飾表示人口的多少。

②提問“人口有多少”常用what,也可以用Howlarge/Howbig提問。Thereare1.4billionpeopleinChina.（對(duì)劃線部分提問）________the___________ofChina?=______________isthe___________ofChina?練習(xí)：Indiahasapopulationof1.1billion.（對(duì)劃線部分提問）________the___________ofIndia?=______________isthe___________ofIndia?What’s

populationHowlarge/bigpopulationWhat’s

populationHowlarge/bigpopulatione.g.

Thepopulationofthiscityisnearly300000.

這個(gè)城市的人口將近三十萬(wàn)。e.g.80%ofthepopulationinChinaarefarmers.

中國(guó)百分之八十的人口是農(nóng)民。thepopulationof+國(guó)家/地區(qū)eg.Thepopulationoftheworldis7.2billion.apopulationof+數(shù)目eg.Chinahasapopulationofover1.4billion.強(qiáng)調(diào)人口的具體分布或構(gòu)成(作復(fù)數(shù)）population集合名詞某地整體人口的數(shù)量(作單數(shù)）2.（1）population的用法③注意thepopulationof和apopulationof的區(qū)別。練習(xí)：1.ThepopulationofXingyi________about1million.2.1/5ofthepopulationinthecity_______oldpeople.isare(2)with在此句中意為“帶有，具有”。eg.Theboywithblackhairismypenpal.Chinahasthelargestpopulation______about1.4billionintheworld.Indiahasapopulationof_______1.31billion.withwith(3)Thepopulationindevelopingcountriesislargerthanthatindevelopedcountries.在比較級(jí)的句子中，that

通常代替上文中出現(xiàn)過(guò)的單數(shù)名詞或不可數(shù)名詞，those代替復(fù)數(shù)名詞。如：1.IthinkthebreadinQinyuanismorediliciousthan_______inHaolilai.2.Theshoesinthisshoparecheaperthan_______inthatone.3.TheweatherinXingyiisbetterthan_____inAnshun.thatthosethat及時(shí)練習(xí)()1.______thepopulationofGuizhouProvince?A.What’sB.WhatnumberisC.HowmuchisD.Howmanyare()2.Chinahasa______populationandlonghistory.A.manyB.largeC.muchD.small()3.Chinahasamuch_____populationthan_____.A.larger;RussiaB.more;RussiaC.larger;thatofRussiaD.more;thatofRussiaABC3.

increaseby+

數(shù)字/倍數(shù)/百分?jǐn)?shù)

增加了……e.g.Thepriceofthehousehasincreasedbythreetimes.

increaseto+數(shù)字

增加到……e.g.Thepriceofthehousehasincreasedto500000.

2502502502502502505004.develop

發(fā)展（動(dòng)詞）developing

發(fā)展中的（形容詞）developed發(fā)達(dá)的（形容詞）eg.Chinaisa__________(develop)country.

Americaisa_____________(develop)country.developingdeveloped5.carryout實(shí)行，進(jìn)行，執(zhí)行。e.g.Itwon’tbeaneasyplantocarryout.

那并不是一個(gè)容易實(shí)施的計(jì)劃。e.g.Thisisanewpolicy,andtheywillcarryitoutnextyear.

這是一項(xiàng)新政策，他們將在明年實(shí)施它。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.larger B.moreC.fewer D.lessCDDA5.—HaveyourparentsbeentoRussia?—Yes.So_____I.

A.do B.havebeenC.didD.have6.ThepopulationofShanghaiislargerthan_____ofShenyang.

A.that B.it C.one D.this7.—_____thepopulationoftheU.S.A.in2005?—It