Unit7课件2022-2023学年人教版英语八年级下册

课时知识点： 1. 长、宽、高、深、面积的表达方法 2. 比较级 + than any other + 可数名词单数 该结构意为“比其他任何一个……都……”，指同一范围内比较，表示最高级含义。 如果比较对象不在同一范围内或不属于同一类别，应用“形容词/副词比较级 + than any（任何的） + 可数名词单数”。 3. population的应用 基数词 + 单位词 + 形容词（long, wide, high, deep等） 基数词 + 单位词 + in + 名词（length, width, height, depth, size等） Unit 7 What’s the highest mountain in the world? Section A (1a-2c) Learning goals学习目标 Key words & phrases: square, square kilometer, meter, deep, desert, geographical, population, Asia. Be able to talk about geography and nature. Be able to read large numbers. 课堂准备： 课本P49-50， 《金牌学典》P91-93 1. What's the coldest place in the world? South Pole. A geography test for you Lead in 2. Which country has the largest population? China. ['pɒpju'leɪʃn] 人口 A geography test for you 3. Which country has the largest area(面积)? Russia. A geography test for you Let’s learn more about some geographical facts. /ˌdʒiːəˈɡræfɪk(ə)l/ 1. How to read large numbers? hundred 百 thousand 千 million 百万 billion 十亿 trillion 万亿 9,600,000 1,025 6,671 8,844.43 nine million six hundred thousand one thousand and twenty-five six thousand six hundred and seventy-one eight thousand eight hundred and forty-four point four three 大数字的表达和读法 大于1000的基数词的表达法： ①从数字的右端向左数，每三位数加一个逗点； ②第一个逗点前的数为thousand（千）， 第二个逗点前的数为million（百万）， 第三个逗点前的数为billion（十亿）。 ③读的时候通常在hundred后加and，如果百位数为0，则在thousand 后加and。 2. Read the large number and guess what they stand for（代表）? Qomolangma ['tʃəuməu'lɑ:ŋmə] 8844.43 meters high Sahara [sə'hɑ:rə] 9,600,000 square kilometers in size [skweə] n.平方，正方形 It's the _______ mountain in the world. It's the _______ desert in the world. highest biggest [ˈmiːtə(r)] n.米，公尺 ['dezət] n.沙漠 2. Read the large number and guess what they stand for（代表）? Caspian Sea ['kæspiən] The Nile [nail] 1,025 meters deep 6671 kilometers long It's the ________ of all the salt lakes. It's the ______ river in the world. deepest longest [diːp] adj.深的 Pre-listening