Module 9 Unit 1 The world’s population was about 7.8 billion in 2020（讲解课件PPT）-【优翼·学练优】2023-2024学年八年级上册初二英语同步备课（外研版）

Module 9 Population Unit 1 The world’s population was about 7.8 billion in 2020. 外研八年级（上） Learning Objectives 1. understand conversations about population; 2. use large number to talk about population issues； 3. arouse the awareness of concern with population issues. By the end of the class, we will be able to: Work in pairs. Look at the picture and talk about it. Use the words in the box to help you. city shop noise people traffic There are many people in the city. The city is very crowded. There is much noise. The traffic may be heavy. What caused the above problems? 3 What information can you get from this video? The population of the world increase quickly; the population of China is the largest of all;... 4 From the video we know that the world’s population is 7.7 billion by 2019 and China has a population of 1.4 billion. So, do you know how to read big numbers? 大数字念法： 每三个数字为一个单位，每个单位的数字按照百、十、个位向后读，遵循百位以内数字的读法。进位读法为thousand, million, billion向上递增。 5 Try to read these numbers. 100: 1000: 1000000: 1000000000: 130: 1250: 150,000: 500,000: 2,100,000: 5,600,000: 82,550,000: 3,5600,271,849: one hundred one thousand one million one billion one hundred and thirty one thousand, two hundred and fifty one hundred and fifty thousand five hundred thousand two million, one hundred thousand five million, six hundred thousand eighty-two million, five hundred and fifty thousand ? 6 3，5600，271，849 thousand million billion hundred eight hundred and forty-nine three billion, five thousand and six hundred million, two hundred and seventy-one thousand, 大数字的表达方法 7 Listen and repeat. 8,742 2,463,128 1,370,000,000 2,000,030,000 eight thousand, seven hundred and forty-two two million, four hundred and sixty-three thousand, one hundred and twenty-eight one billion, three hundred and seventy million two billion and thirty thousand 8 Listen and choose the correct answer. 1 What is the population of New York? a)About 17 million. b)About 9 mil