Unit 7 Section A 1a-2d 课件2022-2023学年人教版八年级英语下册

Section A (1a-2d) Unit 7 What's the highest mountain in the world? Learning Goals By the end of the class ,students will be able to 1.learn about some geograpical facts. 2.describe the features of some famous places by using numbers 3.use the comparative and the superlative to compare things. Let's watch a video ! Do you know these famous places in the world? Qomolangma the Nile the Caspian Sea the Sahara ['tʃəʊməʊˌlɑ:ŋmə] [sə'hɑ:rə] ['kæspiən] [naɪl] _____________ is the highest mountain in the world. Qomolangma ['tʃəʊməʊˌlɑ:ŋmə] 珠穆朗玛峰是世界海拔最高的山峰，高度为8844.43米。 Qomolangma the Nile the Caspian Sea the Sahara [sə'hɑ:rə] ['kæspiən] [naɪl] The longest river in the world is _________. The deepest salt lake in the world is _____________. The biggest desert in the world is __________. n. 沙漠 the Nile 尼罗河长6671千米，是世界上最长的河流。 How high is Qomolangma ? How long is the Nile ? How deep is the Caspian Sea ? How big is the Sahara ? Do you know? the Caspian Sea 里海虽称海，但却是一个巨大的内陆咸水湖，是世界上最大的湖泊。 the Sahara 撒哈拉沙漠形成于约250万年前，是世界上最大的沙质荒漠。 Pre-listening 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 8,848.86 meters high The students are having a class. The teacher is asking them about some geographical facts（地理事实） . geography What is the teacher asking? How to read these large numbers ? 9,600,000 1,025 6,671 8,848.86 nine million six hundred thousand one thousand and twenty-five six thousand six hundred and seventy-one eight thousand eight hundred and forty-eight point eight six 读数有个小窍门， 自右向左三逗分， 一逗千是（thousand），二逗百万是（million）， 三逗十亿是（billion）， 左右三位分开读， 百位十位and连。 Read the sentences and predict. 1b Qomolangma is _____________ than any other mountain in the world. The Sahara is _____________ desert in the world. The Caspian Sea is _______________ of all the salt lakes. The Nile is _________________ river in the world. Predicting (than 形容词比较级标志词。) （2.3.4句比