仁爱九年级英语上册unit_1_topic_2_section_b

Section B,Unit 1 The Changing World Topic 2 Which country has the largest population?,numbers in our life,one hundred and fifty yuantwo thousand and eight Olympic Games,millions of starssince(自从）650 million years ago,about one billion (1,000,000,000 ) years old,two point two six (2.26) meters tall,1,000,000,000 one billion1.34one point three four,100 one hundred 1,000 one thousand1,000,000 one million,十亿,点,Look,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 two,Listen and Say,（录音p12-2a ）,1.34one point three four100 one hundred 1,000 one thousand1,000,000 one million1,000,000,000 one billion,543five 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 forty,Say,1.34one point three four100 one hundred 1,000 one thousand1,000,000 one million1,000,000,000 one billion,5 555 555 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 million,There are about 1.3 billion people in China.= China has a population of 1.3 billion.Whats the population of China?,Look and practice,A: Whats the population of China?B: Its about 1.3 billion.,Pair workTalk about the chart,6, 800,000,000What a large population!,The population is increasing by 80 million every year.,80,80,80,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.,Act out the dialog,6 575(miles),32 million,210 million,326 (yuan),8 844.43(meters),Canada,Work alone,Mount Qomolangma,dinosaur,（录音p12-2b）,Sum up,How to read the numbers in EnglishWhats the population of ?increase by carry out,Exercises,1. _ 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,C,D,1.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?,Homework,Goodbye!,population(large small),集合名词 某地整体人口是多少 (作单数)强调具体成员, 某地的部分人口(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。 (e.g) 80% of the population in China are farmers. 中国百分之八十的人口是农民。,increase by +倍数或百分数 (e.g.)The cost of living has increased by three times. increase to +具体数字 (e.g.)The price of the house has increased to 500 000.