Unit 1 Topic 2 Section B.pptx

SectionB Unit1TheChangingWorld Topic2Thepopulationindevelopingcountriesisgrowingfaster numbersinourlives onehundredandfiftyyuan thousandsofpeople twopointtwosix 2 26 meterstall twothousandandeightOlympicGames 1 000 000 000onebillion 1 000 000onemillion 1 000onethousand 3 14threepointonefour 100onehundred Look readandlearn First trytoseparatethenumberingroupsofthreefromrighttoleft Thenreaditinorderfrombilliontomillionandthousand Howtoreadnumbers 1 000 000 000 billion million thousand 1000000000 2Listenandreadthenumbers payingspecialattentiontotheintonation Thenreadtheothernumberswithyourpartner 543 7fivehundredandforty threepointseven1562onethousand fivehundredandsixty two6004001sixmillion fourthousandandone7198764502sevenbillion onehundredandninety eightmillion sevenhundredandsixty fourthousand fivehundredandtwo 973ninehundredandseventy three3980threethousand ninehundredandeighty98721ninety eightthousand sevenhundredandtwenty one768540sevenhundredandsixty eightthousand fivehundredandforty 2346780twomillion threehundredandforty sixthousand sevenhundredandeighty82346580eighty twomillion threehundredandforty sixthousand fivehundredandeighty405000000fourhundredandfivemillion5555555555fivebillion fivehundredandfifty fivemillion fivehundredandfifty fivethousand fivehundredandfifty five 6800 80 80 80 Thepopulationisincreasingby90millioneveryyear Theworldhasapopulationof7 2billion Whatalargepopulation 1bListento1aandmatchtheination Makesimilarconversationsaftertheexample Example A What sthepopulationoftheworld B It sabout7 2billion 1cRead1aandfillintheblanks Theworldhasapopulationof7 2billionanditisincreasingby everyyear hasthelargestpopulation Ithasalreadyreached andIndiais with1 31billion Thepopulationindevelopingcountriesis andisgrowing thanthatindevelopedcountries Luckily ourcountryhascarriedoutsomepoliciesto thepopulation 90million China 1 37billion second larger faster solve Thesupermarketisverycrowded Soitis So 主语 be 情态动词 助动词 Lucydancesverywell Shehascleanedtheroom Soshedoes Soshehas Soitis Languagepoints 确实如此 A Whatalargepopulation Theworld 7 2billion 90millioneveryyear B Whichcountry A China reach andIndia with B theUSA A 321million B Itshows developingcountries developedcountries A isgrowingfaster B Soitis Thepopulationproblem developingcountriesA China carryout solvethepopulation Actoutthedialog 3Workingroupsanddiscussthepopulationoftheworld Thefollowingchartandquestionsmayhelpyou 1 Whichofthese5countrieshasthelargest smallestpopulation What sthepopulationofit 2 Whatcanyoutellfromthepopulationindevelopingcountriesandindevelopedcountries 3 Whatproblemsdoesthelargepopulationcause 4 Whatmeasuresdoyouthinkshouldbetakentosolvethepopulationproblem Chinahasthelargestpopulation ThepopulationofChinais1 37billion Canadahasthesmallestpopulation ThepopulationofCanadais35million Thepopulationindevelopingcountriesislargerthanthatindevelopedcountries Thelargepopulationmaycauselesslivingspace morepollutionandsoon Choosethebestanswer 1 isthepopulationofRussia 143million A HowmuchB HowmanyC WhatD How2 Thereare studentsinourschool A threethousandsB threethousandsofC threethousandofD threethousand3 Jennyalwayshelpsothers A SoissheB SosheisC SodoessheD Soshedoes4 ThepopulationofChinais thanthatofJapan A largerB moreC fewerD less C D D A rcises summary Welearn 1 ReadnumbersinEnglish 2 Talkaboutpopulationproblems Wecan 1 Somewords population billion increase reach luckily policy Russia measure2 Somephrases increaseby developingcountries developedcountries carryout theone childpolicy3 Somesentences Whatalargepopulation Theworldhasapopulationof7 2billion Soitis Homework 2 ReadthenumbersinPart2onP12 1 Read1aaloud 3 FinishSectionBinyourworkbook 4 PreviewSectionC Thankyou e g Thepopulationofthiscityisnearly300000 这个城市的人口将近三十万 e g 80 ofthepopulationinChinaarefarmers 中国百分之八十的人口是农民 e g ThepopulationofChinaisverylarge 中国人口众多 Thepopulationinthisareaisbecomingsmallerandsmaller 这个地区的人口越来越少 强调人口的具体分布或构成 作复数 BACK population 集合名词某地整体人口的数量 作单数 通常用large big small来修饰 increaseby 数字 倍数 百分数增加了 e g Thepriceofthehousehasincreasedbythreetimes increaseto 数字增加到 e g Thepriceofthehousehasincreasedto500000 250 250 250 250 250 250 500 BACK