Module 9 Unit 1 课件 2023-2024学年外研版英语八年级上册

Have you ever travelled to anywhere before? How do you feel during the journey, especially on holidays? Sun Yat-sen Mausoleum of Nanjing 南京中山陵 the Great Wall West Lake of Hang Zhou What problems will the population increase bring to us? Food shortage Water shortage Pollution Ecology destruction (生态破坏) Traffic problem What should we do ? Unit 1 The world’s population was about 7.8 billion in 2020. Population Module 9 2020年，世界人口大约是78亿。 billion 十亿 1 billion 10亿 7 billion 70亿 point 1. To understand population-related topics 2. Listen to learn about the population problems all over the world. 3. To learn to read and understand large numbers 4. To learn the words and expressions Objectives map of the world Which country has the largest population? China , , , 1,400, 000,000 What’s the population of the China? The population of the China is about 1.4 billion(14亿) the population of China 1.4 billion 20% 1/5 one fifth twenty percent 20%中国 1，4000，000，000 the population of the world 7.8 billion 2019.7-2020.11 四川省安岳中学 实习生 Tips: 1.个位与十位间一般要用连字符号“-”, 2. 十位与百位间用 “and”。 12 20 22 222 2,222 twelve twenty twenty-two two hundred and twenty-two two thousand, two hundred and twenty-two Try to read them How to read large numbers billion 十亿 million 百万 thousand 千 朗读数字时，倒着数，将每三位数看做一个单位。 上例中的数字可以分解为...billion...million...thousand...， 每个单位按照百、十、个位往后读，遵循百位以内数字的读法。 1, 140, 840, 230 two hundred and thirty eight hundred and forty thousand one hundred and forty million one billion 1 1 4 0 8 4 0 2 3 0 1, 140, 840 , 230 comma 逗号 1,340,000,000 / / three hundred and forty million one billion 1, 234, 567, 890 eight hundred and ninty five hundred and sixty-seven thousand two hundred and thirty-four million one billion 80, 000.27 eighty thousand point two seven .27 小数点读:point Let's practice. 3.5 million 45.8 million 12.2billion three point five million one point three seven billion forty-five point eight million twelve point two billion 分数的表达 基数词 序数词 当分子＞1时，