Unit 7 Section A 1a-1c 课件 2022-2023学年人教版八年级英语下册

Unit 7 What’s the highest mountain in the world? Section A 1a-1c Who has the best eyesight视力? highest longest heaviest deepest (深的) oldest more beautiful biggest largest smallest the most careful better earlier let’s check! highest longest heaviest oldest more beautiful biggest largest smallest the most careful better earlier deepest Presentation square n. 平方 广场 正方形 方格 meter n. 米 eg:Tian’an Men Square 65 square meters deep adj. 深的 deeply adv.在深处 desert n. 沙漠 adj.荒芜的 in the desert Qomolangma Sahara The Caspian Sea The Nile The top of the world (世界之最) biggest desert ? deepest salt lake(咸水湖) ? longest river ? highest mountain ? Match the facts you know. 1a Qomolangma about 9,600,000 square kilometers in size The Sahara 1,025 meters deep The Caspian Sea 6,671 kilometers long The Nile 8,844.43 meters high Listen and complete the sentences. 1.Qomolangma is _than any other mountain in the world. 2.The Sahara is _desert in the world. 3.The Caspian Sea is _ of all the salt lakes. 4.The Nile is _river in the world. 1b higher the longeset the deepest the biggest Pair work :Use the information in 1b to make conversations with your partner . What is the highest mountain in the world? Qomolangma. What is the … in the world? … It is the … the Sahara -the biggest desert the Caspian Sea -the deepest salt lake the Nile -the longest river Qomolangma- the highest mountain 拼读千位以上的基数词 从个位起每隔三位加一逗号,依次添加thousand,million,billion,其中的每三位数仍按百位数读。例如: 9 ,999 , 999 , 999 nine billion nine hundred and ninety-nine milion nine hundred and ninety-nine thousand nine hundred and ninety-nine. 表示具体数目(确数)时hundred,thousand和 million须用单数。 eight thousand eight hundred and forty-eight one thousand and twenty-five six thousand six hundred and seventy-one nine million six hundred thousand 9,600,000 8,848 1,025 6,671 Match the following numbers 小数英语表示法 小数用基数词来表示,以小数点为界,小数点左首的数字为一个 单位,表示整 数,数字合起来读;小数点右首的数字为一个单位,表 示小数,数字分开来读;小 数点读作 point,o 读作 zero 或 o. 0.4-zero point four 或 point four 零点四 10.23- ten point two thre