Unit+1+Topic+2+Section+B 仁愛版九年級英語上冊

Unit1

TheChangingWorldTopic2SectionB學(xué)習(xí)目標(biāo)預(yù)習(xí)檢測知識梳理課堂總結(jié)學(xué)習(xí)導(dǎo)航重點探究當(dāng)堂檢測能熟悉并正確運用本課時的重點單詞和短語12能夠掌握數(shù)字的拼讀1.—_______thepopulationofIndia?

—_______about1.27billion.

A.Howmanyare;TheyareB.Howmuchis;ThatisC.Whatis;Itis D.Howis;Thisis2.—Whichcountryhasthe_____population,India,AmericaorChina?

—America.A.largest B.smallestC.least D.fewest預(yù)習(xí)檢測CB3.—Howmanyworkersarethereinyourcompany?—Aboutseven_______.

A.hundred B.thousandsC.hundredof D.thousandsof4.Chinahas_______manypoliciestosolvetheproblem.A.carriedoutB.takenoutC.putoutD.givenout5.—Tomworkshardeveryday.—_________.Healwayspassesthedifficultexam.A.SoheisB.SoisheC.SohedoesD.SodoesheAAC知識梳理Keypoints※population是一個集合名詞

①population常與定冠詞the連用，作主語用時，謂語動詞常用第三人稱單數(shù)形式。

e.g.Thepopulationisincreasingfasterandfaster.

②表示人口的"多"或"少"，不用"much"或"little"，而要用"large"或"small"。

e.g.

Indiahasalargepopulation.

③詢問某國、某地有多少人口時,不用"Howmuch...?",而用"Howlarge...?";在問具體人口時用"What...?"。

e.g.

Howlargeisthepopulationofyourhometown?

Keypoints※

Anditisincreasingby82millioneveryyear.increasev.(使)增加，（使)增大，增多。

increaseby＋倍數(shù)或百分?jǐn)?shù)，表示“增加了……倍或百分之……”。e.g.Comparedwithlastyear,ourpayhasincreasedbythreetimes.與去年相比，我們的工資增長了3倍。

increaseto＋具體的增長后的數(shù)字，表示“增加到了……”。e.g.Ourriceoutputhasincreasedto6milliontonsthisyear.我們的水稻產(chǎn)量今年增長到了600萬噸。Keypoints※Soitis.該結(jié)構(gòu)主要用于加強語氣，其意為“的確如此、確實如此”

，表示后者贊同前者的話或意見，只是進一步強調(diào)并重復(fù)前句所述的內(nèi)容。前后句的主語指的是同一個人或物。該結(jié)構(gòu)中的助動詞do根據(jù)前文的情況也可換成is,am,are,was,were,does,did,can,could等。e.g.—Hehasdoneagoodjob.他干得不錯?！猄ohehas.他的確干得不錯。

Keypoints※

Luckily,Chinahasalreadycarriedoutsomepoliciestosolvetheproblem.carryout實行，進行，執(zhí)行。e.g.Itwon’tbeaneasyplantocarryout.那并不是一個容易實施的計劃。e.g.Thisisanewpolicy,andtheywillcarryitoutnextyear.這是一項新政策，他們將在明年實施它。世界人口問題Let’swatchavideo…PresentationA:What’sthepopulationoftheworld?B:It’sabout

7.2billion.

Anditisincreasingby82millioneveryyear.增加，增大人口7.2Thepopulationoftheworld:7.2billionEveryyearwehave82millionmore.China:1.36billionIndia:1.27billiontheUSA:323millionRussia:143millionCanada:36milliontoomuch_______noisetoomany________people[?n?kri:s]增加_________________isabigprobleminChina.Thatcausesalotofproblems.Populationincrease[k?:z]導(dǎo)致toomuch_______________smoke/pollutiontoomuch________traffic1aLook,listenandsay.Kangkang:Wow!Whatalargepopulation!Maria:

What?Kangkang:Look,itsaystheworldhasapopulationof7.2billion.Anditis

increasingby82millioneveryyear.Maria:Mmm,that’sreallyalot.Whichcountryhasthelargestpopulation?Kangkang:Chinahasthelargestpopulation.Ithasalreadyreached1.36billion,andIndiaissecondwith1.27billion.Maria:What’sthepopulationoftheUSA?Kangkang:

323million.(Kangkangisreadingareportonpopulationinthenewspaper.)Maria:Oh,Isee.Itshowsthatthepopulationindevelopingcountriesislargerthanthatindevelopedcountries,doesn’tit?Kangkang:Yes,What’smore,thepopulationindevelopingcountriesisgrowingfaster.Maria:Soitis.Thepopulationproblemhasbecomemoreseriousindevelopingcountries.Kangkang:Luckily,Chinahasalreadycarriedoutsomepoliciestosolvetheproblem.A：Whatalargepopulation!Theworld…7.2billion.…82millioneveryyear.B：Whichcountry…?A：China…reach…,andIndia…with….B：…theUSA?A：323million.B：Itshows…developingcountries…developedcountries.A：…isgrowingfaster…B：Soitis.Thepopulationproblem…developingcountries.A：China…carryout…solvetheproblem.ActoutthedialogRoleplay1bListento1aandmatchtheinformation.1.theworld2.China3.India4.theUSAA.323millionB.7.2billionC.1.36billionD.1.27billion1cRead1aandfillintheblanks.

Theworldhasapopulationof7.2billionanditisincreasingby__________everyyear._______hasthelargestpopulation.Ithasalreadyreached__________andIndiais_________with1.27billion.Thepopulationindevelopingcountriesis______andisgrowing________thanthatindevelopedcountries.Luckily,ourcountryhascarriedoutsome

policiesto_______theproblem.82millionChina1.36billionsecondlargerfastersolveThepopulationoftheworld:7.2billionEveryyearwehave82millionmore.China:1.36billionIndia:1.27billiontheUSA:323millionRussia:143millionCanada:36million3Workingroupsanddiscussthepopulationoftheworld.Thefollowingchartandquestionsmayhelpyou.1.Whichofthese5countrieshasthelargest/smallestpopulation?What’sthepopulationofit?2.Whatcanyoutellfromthepopulationindevelopingcountriesandindevelopedcountries?3.Whatproblemsdoesthelargepopulationcause?4.Whatmeasuresdoyouthinkshouldbetakentosolvethepopulationproblem?Chinahasthelargestpopulation.ThepopulationofChinais1.36billion.Canadahasthesmallestpopulation.ThepopulationofCanadais36million.Thepopulationindevelopingcountriesislargerthanthatindevelopedcountries.Thelargepopulationmaycauselesslivingspace,morepollutionandsoon.

通過以上活動，我們可以總結(jié)出：現(xiàn)在世界人口已經(jīng)達到72億了，并且每年增長1.__________。其中中國是最多人口的國家，且人口達到2.___________；其次是印度，人口達到3.___________。而美國人口只有4.___________。當(dāng)堂檢測見DCF課件活動小結(jié)82million1.36billion1.27billion323million數(shù)字的表達方法Let'slearn1,000,000,000one

billion1,000,000one

million1,000one

thousand3.14three

point

onefour100one

hundred

朗讀時，將每三位數(shù)看做一個單位，從右往左依次為thousand千，million百萬，billion十億。每個單位按照百、十、個位向下讀，其中百位到十位之間要加入and。billion十億e.g.1.3billion

十三億billion與million,thousand,hundred一樣，在表示確切數(shù)字時，不能使用復(fù)數(shù)形式，但是，不表示確切數(shù)字時，如成百、成千、上萬時，要以復(fù)數(shù)形式出現(xiàn)，且要與of連用，構(gòu)成短語。e.g.hundredsof

數(shù)百，成百上千的thousandsof

成千上萬的millionsof

數(shù)百萬billionsof

數(shù)十億1011101221431,00010,0001,000,000100,000,0001,000,000,000onehundredandoneonehundredandtenonehundredand

twenty-twoonehundredand

forty-threeonethousand（千）tenthousand（一萬）onemillion（百萬）a/onehundredmillion（一億）onebillion（十億）Athousandmillion

百位到十位之間要加入and。111,121,435,678

↓

↓

↓billion十億million百萬thousand千讀：onehundredandelevenbillion

onehundredandtwenty-onemillionfourhundredandthirty-fivethousand

sixhundredandseventy-eight逗號讀法朗讀時，將每三位數(shù)看做一個單位，從右往左依次為thousand千，million百萬，billion十億。每個單位按照百、十、個位向下讀，其中百位到十位之間要加入and。6，500，431，729thousandmillion