Unit1 Topic 2 Section B 课件 2025-2026学年仁爱科普版英语九年级上册

Five hundred and forty three point seven. One thousand five hundred and sixty two. Six million, four thousand and one. Seven billion, one hundred and ninety eight million, seven hundred and sixty four thousand, five hundred and two. Unit 1 The Changing World Topic 2 The population in developing countries is growing faster. Section B 1 能听懂高位数字，并作出正确判断。 能通过整合对话内容，提升综合语言运用能力。 Skill aims 学生能掌握本课的重点词汇和短语，复习形容词比较级的用法，继续学习数字表达。 Knowledge aims 增强学生对人口问题的认识，了解各国的人口现状。 增强学生关注社会的意识。 Emotional aims Teaching aims Emotional aims 通过对比发达国家和发展中国家的人口增长情况，引导学生树立正确的人口观念。 Culture awareness 此教学目标仅供教师导学使用，不需呈现给学生。 2 Warming up Numbers in our lives one hundred and fifty yuan two thousand and twenty-four Olympic Games ten past eleven thousands of people eight years old Do you know the population of the world? Pre-listening 今日头条 population [ˌpɒpjʊˈleɪʃən]n.人口 billion ['bɪljən] num．十亿 increase[ɪn'kriːs]v.(使)增加 Russia [ˈrʌʃə] n.俄罗斯 reach [riːtʃ] v.实现；达到 luckily ['lʌkɪli]adv .幸运地 measure[ˈmeʒə]n.措施，方法 The world has a population of 7.2 billion in 2014. And it is increasing by 82 million every year. Russia has reached 143 million. Luckily, it has taken some measures to solve the problem. It is increasing by 82 million every year. 82 000 000 , , 增加了，增长了 1,000 one thousand 1,000,000,000 one billion 1,000,000 one million 3.14 three point one four 100 one hundred How to read numbers? 6 2 Listen and read the numbers. nine hundred and seventy-three three thousand , nine hundred and eighty ninety-eight thousand , seven hundred and twenty-one seven hundred and sixty-eight thousand , five hundred and forty 6 , 6 6 6 , 6 6 6 , 6 6 6 billion million thousand 973 3 980 98 721 768 540 7 6 , 6 6 6 , 6 6 6 , 6 6 6 billion million thousand two million, three hundred and forty-six thousand, seven hundred and eighty eighty-two million, three hundred and sixty-four thousand, five hundred and eighty four hundred and five million five billion, five hundred and fifty-five million, five hundred and fifty-five thousand, five hundred and fifty-five 2 346 780 82 364 580 405 000 000 5 555 555 555 8 Look , guess and listen. What are they talking about ? Are they talking about the population of the world or Asia? Let’s listen. While-listening Listen to 1a and match the information. 1. the world 2. China 3. India 4. the USA A. 323 million B. 7.2 billion(2014) C. 1.36 billion D. 1.27 billion What: Present situation (现状) How (the way to solve) The world has a population of 1.________ in 2014. It is increasing by 2. _________ every year. There will be more pollution and other 3. ________________. We should find new ways to protect the 4. _____________, for example, making new rules and 5._________. serious problems 82 million 1. 听前审题，2. 听中速记，3. 听后整理，检验！ Listen to 1a again, then finish the table. 听录音，完成表格。 7.2 billion environment policies Listen, watch and repeat the dialogue . Pair work: Read the dialogue in pairs. 1c Read 1a and fill in the blanks. The world has a population of 7.2 billion in 2014 and it is increasing by _____________ every year. ________ population has already reached ____________ and India has ____________ of 1.27 billion. As the population ___________, there will be more pollution and other serious problems. We should find new ways to ________ the environment, for example, making new rules and policies. 82 million China’s 1.36 billion a population increases protect (Kangkang is reading a report on population in the newspaper.) Maria: Hi, Kangkang, what are you reading? Kangkang: I’m reading a report about world population. Maria: What does it say? Kangkang: It says the world has a population of 7.2 billion in 2014. And it is increasing by 82 million every year. Maria: Mmm, that's really a lot. Kangkang: Yes. China’s population has already reached 1.36 billion, and India has a population of 1.27 billion. Maria: What’s the population of the USA? Kangkang: 323 million. have a population of...:有...人口 increase by...:增加了 已经达到 △问人口：What’s the population of ...? Maria: Oh, I see. What else does it say? Kangkang: It also says that as the population increases, there will be more pollution and other serious problems. Maria: So, what should we do with the problems? Kangkang: There are a lot of things we should do. We should find new ways to protect the environment, for example, making new rules and policies. Maria: That’s great! Only by working together can we create a better future. (Data from: UN, Worldometer and National Bureau of Statistics, 2014) 随着人口的增长 处理，解决 制定新的规则和政策 只有通过合作，我们才能创造更好的未来。 （以“only+状语”开头的句子要使用倒装语序，也就是be动词、助动词和情态动词放在主语前面 ） 1.72亿人口 2.增加了八千两百万 3.美国的人口 4.处理，解决 5.保护环境 6.创造更好的未来 a population of 7.2 billion increase by 82 million the population of the USA do with protect the environment create a better future Language points 例：The population of this city is nearly 300 000. 这个城市的人口将近三十万。 例：The population of China is very large. 中国人口众多。 The population in this area is becoming smaller and smaller. 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） 集合名词 某地整体人口的数量(作单数） 1. population通常用large/ big/ small 来修饰。 例：80% of the population in China are farmers. 中国百分之八十的人口是农民。 17 常用句式： What’s the population of...? 意为“……人口是多少？” It is … 例：What's the population of China ? 中国人口是多少？ 例： China has a population of 1.3 billion. 中国有13亿人口。 2. increase by 增加了，增长了 例: 石油(oil)的价格增长了2%。 The price of oil increased by 2%. increase by 增加了…… increase to 增加到…… increase by + 数字 / 倍数 / 百分数 例：The price of the house has increased by three times. increase to +数字 例：The price of the house has increased to 500 000. 250 250 250 250 250 250 500 Post-listening 3. Work in groups and discuss the population of the world. The following chart and questions may help you. 1. Which of these 5 countries has the largest/smallest population? What’s the population of it? China has the largest population. The population of China is 1.36 billion. Canada has the smallest population. The population of Canada is 36 million. What a large population! Post-listening 3. Work in groups and discuss the population of the world. The following chart and questions may help you. What a large population! 2. What problems does the large population cause? The large population may cause less living space, more pollution and so on. Post-listening 3. Work in groups and discuss the population of the world. The following chart and questions may help you. 3. What measures do you think should be taken to solve the population problem? take measures to do sth.采取措施做某事 China has already carried out the two-child policy(二孩政策) to solve the problems caused by the aging (老龄化) population for several years, but it is not enough. So China has carried out the three-child policy(三孩政策) to solve the population problems. What a large population! Choose the best answer. 1. — ______ is the population of Russia? — 143 million. A. How much B. How many C. What D. How 2. There are ______ students in our school. A. three thousands B. three thousands of C. three thousand of D. three thousand 3. — Jenny always helps others. — ______. A. So is she B. So she is C. So does she D. So she does 4. The population of China is ______ than that of Japan. A. larger B. more C. fewer D. less C D D A Exercises 1. Read numbers in English. 2. Talk about population problems. 1. Some words: population, billion, increase, reach, luckily, policy, Russia, measure 2. Some phrases: increase by, developing countries, developed countries, carry out, the one-child policy 3. Some sentences: What a large population! The world has a population of 6.8 billion. So it is. We learn We can Summary 3. Preview Section C. 1. Read 1a aloud. 2. Finish Section B in your workbook. Homework Thank you! 教学反思 36284.18 null 77113.18 $Hi康康，what are you reading? I am reading a report about world population. What does IT say? IT says . the world has a population of seven point two billion in two thousand fourteen, and IT is increasing by eighty two million . every year. That really a lot. Yes, china's population has already reached one point three six billion, and india has a population of one point two seven billion. What's the population of the U. S. A? Three hundred and twenty three million? Oh, I see. What else does he say? IT also says that as the population increases, there will be more pollution and other serious problems. So what should we do with the problems? There are a lot of things we should do. We should find new ways to protect the environment, for example, making new rules and policies. That's great. Only by working together can we create a Better future. null