Unit1Topic2SectionB課件仁愛九年級英語上冊

Unit1TheChangingWorldTopic2Thepopulationindevelopingcountriesisgrowingfaster.SectionB主講人：XXX時間：onehundredandfiftyyuantwothousandandtwenty-fourOlympicGamestenpasteleventhousandsofpeopleeightyearsoldLookatthefollowingnumbersandthinkabouthowtoreadit.5.21five

point

twoone100one

hundred

1,000one

thousand1,000,000,000one

billion1,000,000one

millionNow,doyouknowhowtoreadthenumbers?1,000,000,001onebillion,onemillion,onethousandandone543.715626004001fivehundredandforty-threepointsevenonethousand,fivehundredandsixty-twosixmillion,fourthousandandonesevenbillion,onehundredandninety-eightmillion,sevenhundredandsixty-fourthousand,fivehundredandtwo7198764502Listenandreadthenumbers,payingspecialattentiontotheintonation.Thenreadtheothernumberswithyourpartner.973398098721768540ninehundredandseventy-threethreethousand,ninehundredandeightysevenhundredandsixty-eightthousand,fivehundredandfortyninety-eightthousand,sevenhundredandtwenty-oneHaveatry1bListento1aandmatchtheinformation.1.theworld2.China3.India4.theUSAA.309millionB.6.8billionC.1.3billionD.1.1billion1cRead1aandfillintheblanks.

Theworldhasapopulationof6.8billionanditisincreasingby__________everyyear._______hasthelargestpopulation.Ithasalreadyreached__________andIndiais_________with1.1billion.Thepopulationindevelopingcountriesis______andisgrowing________thanthatindevelopedcountries.Luckily,ourcountryhascarriedoutthe___________policytocontrolthepopulation.80millionChina1.3billionsecondlargerfasterone-childpopulation人口，通常用

large/big/small修飾。作主語時，謂語動詞常用單數(shù)形式ThepopulationofChinaislarge.針對人口數(shù)量提問時，特殊疑問詞用WhatWhatisthepopulationofChina.擁有...人口：haveapopulationof強調人口的具體分布或構成時，謂語動詞用復數(shù)形式80%ofthepopulationinChinaarefarmers.So+主語+be/情態(tài)動詞/助動詞指對同一看法的肯定，意為“……的確如此”Example:A:IthinkTomcanworkouttheproblem.B:Sohecan.Neither/Nor＋主語＋be動詞/情態(tài)動詞/助動詞指對同一看法的否定，意為“確實不……”Example:A:Tomcan’tswim.B:Neither/Norhecan.Heisrepairingthecomputer.TheyhavebeentoParistwice.Kangkangwasjumpingropeatthattime.Ritawillbecomemoreandmorebeautiful.Sheusedtolivealone.Soheis.Sotheyhave.Sohewas.Soshewill.Soshedid.Janecouldn'tdanceattheageoffive.Neither/Norshecould.Theyhavenothingtoeat.Neither/Northeydo.Ritaisn'tourheadteacher.Neither/Norsheis.Tomhasn'tbeentoBeijing.Neither/Norhehas.Theyaren'tlate.Neither/Northeyare.increaseby+數(shù)字/倍數(shù)/百分數(shù)

意為“增加了……倍或百分之……”Thepriceofthehousehasincreasedbythreetimes.increaseto+具體的增長后的數(shù)字

意為“增加到……”O(jiān)urriceoutputhasincreasedto6milliontonsthisyear.“實行；進行；執(zhí)行”Itwon’tbeaneasyplantocaarryout.√√√√3Workingroupsanddiscussthepopulationoftheworld.Thefollowingchartandquestionsmayhelpyou.1.Whichofthese5countrieshasthelargest/smallestpopulation?What’sthepopulationofit?2.Whatcanyoutellfromthepopulationindevelopingcountriesandindevelopedcountries?3.Whatproblemsdoesthelargepopulationcause?4.Whatmeasuresdoyouthinkshouldbetakentosolvethepopulationproblem?=Theworldhasapopulationof6.8billion.4.Whatmeasuresdoyouthinkshouldbetakentosolvethepopulationproblem?takemeasurestodosth.意為“采取措施做某事”。Thegovernmenttakesmanymeasures

toimprovetheenvironment.doyouthink

是插入語，what

measures

在句中作主語，所以

doyouthink之后接陳述句語序。Whodoyouknowisondutytoday?SummaryWelearnWecan1.Somewords:population,billion,increase,reach,luckily