外研版八年级上册Module 9 Population Unit 2 Arnwick was a city with 200000 people.课件 (共33张PPT).ppt

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1、Module9Population Unit1ThepopulationofChinais1.37billion 学习目标学习目标:1.能听辨并写出大数字能听辨并写出大数字2.能用大数字谈论人口问题能用大数字谈论人口问题Readthenumbers1.8462.4,5173.59,2484.8,326,0005.9,368,600,000eighthundredandforty-sixfourthousand,fivehundredandseventeenfifty-ninethousand,twohundredandforty-eighteightmillion,threehundredan

2、dtwenty-sixthousandninebillion,threehundredandsixty-eightmillion,sixhundredthousandWenzhouhasa population of9,122,100.Wenzhouisabigcitywith .The population of Wenzhouis9,122,100.Thereis a population of9,122,100inWenzhou.Wenzhouisabigcitywithalargepopulationof9,122,100.9,122,100peopleliveinWenzhou.9,

3、122,100The population of Wenzhou:9,122,1001.Therearetoomanypeopleintheworld.Whats the population of China？2.Whats the population of the world？3.Population increase is a big problem.How do you know？4.What other problems does it cause？5.What should people do？（your advice）ThepopulationofChinais1.37bill

4、ion.Thatsalmostonefifthoftheworldspopulation.Thepopulationoftheworldis7million.Over250babiesareborneveryminuteintheworld.Thatmeansover131.4millionareborninayear.Itcausesalotofproblems,suchastoomuchtrafficandnoise.Peopleshouldnthavetoomanybabies.Weshouldbuildmanysmallcities,nothugecities.WillChinaspo

5、pulationgrowfast?Why?No,itwont.Becausefamiliesaregettingsmaller.were in the right place to talk about“that”.The word“that”refers to _A.Beijing B.the population of Beijing C.our growing populationThatmakesover131.4millionbirthsayear.Theword“that”refersto_over250babiesareborneveryminuteintheworldIcant

6、believeitTheword“it”refersto_Thereareover131.4millionbirthsayear.Hangonaminute!Iwillwritethatdowntoo!Theword“that”refersto_ThepopulationofChinaisabout1.37billion.Thatsalmostonefifthofworldspopulation,thatis,about7billionHowdoyouknowallthis?Theword“this”refersto_Populationincreaseisabigproblem.Over25

7、0babiesareborn.Thatmakesbirths.ThepopulationofChinaisonefifthofChoose the correct answer.1.Birthhappensatthestart/attheendoflife.2.Hugemeanslarge/small.3.Anincreaseinpopulationmeansmore/fewerpeople.4.Hang on a minutemeanswaitingforashorttime/alongtime.5.Makingnotesmeanswritingalongpassage/afewwords.

8、6.Aproblemissomethingeasy/difficult.7.Areportisalongpieceofwriting/afewwords.8.Abillionisahundred/athousandmillion.1.的人口是的人口是2.为为做准备做准备3.在合适的地点在合适的地点4.一个很大的城市一个很大的城市5.太多的噪声太多的噪声6.人口增长人口增长7.每分钟每分钟8.出生出生9.五分之一五分之一10.稍等稍等11.在未来在未来12.写一份报告写一份报告13.增长得快增长得快14.太多车辆太多车辆15.造成很多问题造成很多问题thepopulationofpreparef

9、orintherightplaceahugecitytoomuchnoisepopulationincreaseeveryminutemakebirthsonefifthhangoninthefuturewriteonesreportgrowfasttoomuchtrafficcausealotofproblems我正在为一篇名为我正在为一篇名为“我们日益增长的人口我们日益增长的人口”的报告准备笔记。的报告准备笔记。北京是一座大城市，人口众多。北京是一座大城市，人口众多。那引发很多问题，比如交通堵塞和噪音过多。那引发很多问题，比如交通堵塞和噪音过多。人口增长在很多国家是一个大问题。人口增长在很

10、多国家是一个大问题。真不敢相信！真不敢相信！中国人口是世界人口的五分之一。中国人口是世界人口的五分之一。在将来，中国的人口就不会增长那么快了，因为家庭规模在缩小在将来，中国的人口就不会增长那么快了，因为家庭规模在缩小Impreparingsomenotesforareportcalled“ourgrowingpopulation”.Beijingisahugecitywithlargepopulation.Thatcausedalotofproblems,suchastoomuchtrafficandnoise.Populationincreaseisabigprobleminmanycoun

11、tries.Icantbelieveit!ThepopulationofChinaisalmostonefifthoftheworldpopulation.Inthefuture,Chinaspopulationwontgrowsofast,becausefamiliesaregettingsmaller.1.Impreparingsomenotesforareportcalled“Ourgrowingpopulation”.preparefor表示表示“为为准备准备”。preparefor为为做准备做准备1.preparetodosth.准备做某事准备做某事2.e.g.Heisprepari

12、ngadinnerforhisfriends.他正在为他的朋友准备晚饭。他正在为他的朋友准备晚饭。studentsarepreparingforthemid-termexamnow.学生们在为期中考试做准备。学生们在为期中考试做准备。Heispreparingtogosightseeingwithhisfriends.2.Thatcausesalotofproblems,suchastoomuchtrafficandnoise.toomany后面加可数名词，表示后面加可数名词，表示“太多的太多的”。toomuch后面加不可数名词，表示后面加不可数名词，表示“太的太的”。much too后面加形

13、容词，表示后面加形容词，表示“太太”。今天太热了今天太热了Itismuchtoohottoday.noisen.噪声；杂音噪声；杂音Thereissomuchnoiseinthisrestaurant;Icanhardlyhearyoutalking.这个餐厅里太嘈杂了，我几乎听不到你说话。这个餐厅里太嘈杂了，我几乎听不到你说话。noisyadj.吵闹的；喧闹的；嘈杂的吵闹的；喧闹的；嘈杂的辨析辨析sound,voice&noisesound，noise和和voice这三个名词都可表示这三个名词都可表示“声音声音”，但有，但有区别：区别：(1)sound作名词，指自然界中人能听到的各种声音作名

14、词，指自然界中人能听到的各种声音Atmidnightheheardastrangesound.半夜里他听到一种奇怪的声音。半夜里他听到一种奇怪的声音。(2)noise常指不悦耳、不和谐的嘈杂声。常指不悦耳、不和谐的嘈杂声。如：如：The noise of traffic kept him awake.(3)voice一般指人的声音，说话、唱歌；谈笑都可用一般指人的声音，说话、唱歌；谈笑都可用voice。The girl has a beautiful voice.那女孩嗓音很美。那女孩嗓音很美。They are talking in low voices.他们正小声交谈。他们正小声交谈。车辆的

15、喧闹声使他睡不着。车辆的喧闹声使他睡不着。1.Dontmakeany_,children.2._travelsslowerthanlight.3.Theressomuch_inthisroomthatIcanthearyoutalking.4.Theywereshoutingatthetopoftheir_.5.Hespokeinaveryloud_.用用sound,noise,voice填空。填空。noiseSoundnoisevoicesvoicePractice 6.Dontmakeany_.Thebabysasleep.7.Thelittlegirlhasaverybeautifula

16、ndsweet_.8.Icanhearthe_ofthebellsoutside.9.Themanwasgone;hisfootstepsmadeno_.noisevoicesoundsound3.Icantbelieveit!表示表示“简直难以置信简直难以置信”。表示一种惊讶。表示一种惊讶。4.ThepopulationofChinaisabout1.37billion.billion(十亿十亿),million(百万百万),thousand(千千)都是数字单都是数字单位。位。当前面有数词时，这些数字单位不加当前面有数词时，这些数字单位不加s，当前面，当前面没有数没有数词词时，这些数词后面加

17、时，这些数词后面加s和和of。5.Thatsalmostonefifthoftheworldspopulation,.onefifth表示表示“五分之一五分之一”，fifth是序数词。是序数词。分数的表达：分子用基数词，分母用序数词。分子分数的表达：分子用基数词，分母用序数词。分子大于大于1时，分母时，分母+s。e.g.2/5:twofifths6.Hangonaminute!通常用来表示让某人等一下。通常用来表示让某人等一下。e.g.Hangon!Illbebackinaminute.7.Populationincreaseisabigproblemincrease既可作可数名词，也可作动词

18、。既可作可数名词，也可作动词。increaseto增加到增加到increaseby增加了增加了ontheincrease正在增加正在增加狗袭击儿童的事件越来越多狗袭击儿童的事件越来越多Attacksbydogsonchildrenareontheincrease.8.Cause（1）cause是动词，意为是动词，意为“引起；造成引起；造成”Unfortunately,Martinstillcausedproblemsforhimselfandhisfamily.不幸的是，马丁仍给自己和家人惹麻烦。不幸的是，马丁仍给自己和家人惹麻烦。（2）cause还可以作名词，意为还可以作名词，意为“原因；起

19、因原因；起因”Smokingisoneofthecausesofheartdisease吸烟是引起心脏病的一种原因。吸烟是引起心脏病的一种原因。1.-Whatareyoupreparing_yourparty?-ImthinkingaboutwhoIllinvite.A.atB.forC.with2.Thereare_peopleinthelittleroom.A.somuchB.somanyC.verymuchBB3.Howdoyouread131,400,000?_.A.OnehundredandthirtyonemillionfourhundredthousandB.Onehundred

20、andthirtyonemillionfourhundredthousandC.OnehundredandthirtyonemillionfourhundredthousandA4.-CouldyougivemesomeadviceaboutlearningEnglish?-Certainly.Whynot_inclass?A.makebooksB.makenotesC.makingnotes5._oftheworldspopulationisinChina.A.OnefiveB.OnefifthsC.OnefifthBC6.-Theschoolbusiscoming.-_.Illcomein

21、aminute.A.HangonB.OnearthC.Onceortwice7.Population_isabigproblemintheworld.A.increaseB.describeC.protectAA1.Ithink_ofthematerialsIlistenedtoatthebeginningoftheexam_easy.A.threefourths,isB.thirdfour,areC.threefourths,areD.threefourth,areC2._treeshavebeenplantednearhere,sotheairisveryfresh.A.Twohundre

22、dsB.HundredofC.HundredsofD.HundredsC3._visitorscometoXingyiduringMayDayholidayseveryyear.A.ThousandsofB.TwothousandsC.ThousandofD.ThousandACheck()the statements you agree with.1.Therearetoomanypeopleintheworld.2.Theincreasingpopulationisthebiggestproblemintheworld.3.Peopleshouldnthavetoomanybabies.4

23、.Acityshouldnotholdmorethanonemillionpeople.Now work in groups and discuss your answers.6Do you agree?In the future,Chinese population will grow faster and faster.Why?Sofamiliesaregettingsmaller.Eachfamilyonlyhasoneortwochildren.DiscussinpairsIn my opinion,the population of China will be smaller and

24、 smaller.The fewer children a family has,the happier people will be.notGroupworkLetsmakeagraphtogether!1.Look at the table below,choose a country you like.2.Research the population of the country in different times.3.Decide who makes the graph in your group,draw and colour it4.Show your graph,and ta

25、lk about it in groups of three or four.In 2003In 2013In ten yearsChina 1288.71370Japan127.5127.9UK59.262.4USA291.5315.3Australia19.923.2You may talk about your graph in groups like this:A:What are you doing?B:Im preparing some notes for a report called “our growing population”.C:Well,were in the rig

26、ht place to talk about that.China is a huge country with a large population.That causes a lot of problems,such as too much traffic and noise.A:Its not only China.Population increase is a big problem in many countries.D:Yes,look,Japan had a population of ten years ago.Now it has a population of It ma

27、y have a population of in ten years.Show time a huge citytoo much traffictoo many peopletoo much noiselarge population not enough spacecauses many problemsHomework Level A Learn the new vocabulary in unit 1 and read the large numbers in activity 5Level B Research the population of your city and make a graph to show how the population increase.Write a paragraph to describe your graph.