Unit 1 The Changing World Topic 2 Which country has the largest population?one hundred and fifty yuantwo thousand and eight Olympic Gamesmillions of starssince(自从）自从）650 million years agoabout one billion (1,000,000,000 ) years oldtwo point two six (2.26) meters tall 1,000,000,000 one billion1.34one point three four100 one hundred 1,000 one thousand1,000,000 one million十亿十亿点点543.7five hundred and forty-three point seven 1562one thousand, five hundred and sixty-two6 004 001six million, four thousand and one7 198 764 502seven billion, one hundred and ninety-eight million, seven hundred and sixty-four thousand, five hundred and two1.34one point three four100 one hundred 1,000 one thousand1,000,000 one million1,000,000,000 one billion（录音（录音p12-2a ）1.34one point three four100 one hundred 1,000 one thousand1,000,000 one million1,000,000,000 one billion543five hundred and forty-three3 980three thousand , nine hundred and eighty98 721ninety-eight thousand , seven hundred and twenty-one768 540seven hundred and sixty-eight thousand , five hundred and forty1.34one point three four100 one hundred 1,000 one thousand1,000,000 one million1,000,000,000 one billion5 555 555 555five billion, five hundred and fifty-five million, five hundred and fifty-five thousand, five hundred and fifty-five 2 346 780two million, three hundred and forty-six thousand, seven hundred and eighty405 000 000forty hundred and five millionThere are about 1.3 billion people in China.= China has a population of 1.3 billion.Whats the population of China?Look and practiceA: Whats the population of China?B: Its about 1.3 billion.Pair workTalk about the chart6, 800,000,000What a large population!The population is increasing by 80 million every year.8080801. Which countries have larger popula-tion, developing countries or develop-ed countries? Developing countries.2. What has China already done to control the population? China has carried out the one-child policy.Watch and answer （视频（视频p11-1a）A：What a large population ! The world 6.8 billion. 80 million every year.B：Which country ?A：China with, and India with .B： the U.S.A.?A：296 million.B：It shows developing countries developed countries.A： grow faster B：So it is. The population problem developing countriesA：China carry out control the population.1.1.3 billion2._3._4._5._6._6 575(miles)32 million210 million326 (yuan)8 844.43(meters)CanadaMount Qomolangmadinosaur（录音（录音p12-2b）Sum upHow to read the numbers in EnglishWhats the population of ?increase by carry outExercises1. _ is the population of Indonesia? 223 million. A. How much B. How many C. What D. How2.There are _ students in our school. A. three thousands B. three thousands of C. three thousand of D. three thousand CD1.完成同步练习册完成同步练习册Section B。2.Talk about the topics a. Why does China carry out the one-child policy? b. What are the population problems?Homeworkpopulation(large small)集合名词集合名词 某地整体人口是多少某地整体人口是多少 (作单数作单数)强调具体成员强调具体成员, 某地的部分人口某地的部分人口(作复数）作复数） (e.g)The population of this city is nearly 300 000. 这个城市的人口将近三十万。这个城市的人口将近三十万。 (e.g) 80% of the population in China are farmers. 中国百分之八十的人口是农民中国百分之八十的人口是农民。 increase by +倍数或百分数倍数或百分数 (e.g.)The cost of living has increased by three times. increase to +具体数字具体数字 (e.g.)The price of the house has increased to 500 000. 300300300300350150500backcarry out 实行实行, 进行进行, 执行执行(e.g.) We will carry out a new plan to improve our English. carry + 代词代词 +out(e.g.) Its easy to carry it out.back