Unit 7 Section A 1a-2d 课件 2022-2023学年人教版英语八年级下册

Unit 7 What’s the highest mountain in the world? Section A (1a-2d) Which mountain is higher than any other in the world? Which desert is the largest desert in the world? Which river is the longest river in the world? Which is the deepest salt lake in the world? Qomolangma. The Nile. The Caspian Sea. The Sahara. Guess Translate 1.珠穆朗玛峰8 844.43米高。 6.尼罗河是世界上最长的河流。 5.撒哈拉沙漠是世界上最大的沙漠。 4.珠穆朗玛峰比世界上任何一座山都要高。 3.尼罗河6 671公里长。里海1 025米深。 2.撒哈拉沙漠面积大约是9 600 000平方公里。 1. Qomolangma is 8,844.43 meters high. 2. The Sahara desert area is about 9,600,000 square kilometers. 3. The Nile is 6,671 kilometers long. The Caspian Sea is 1,025 meters deep. 4. Qomolangma is higher than any other mountain of the world. 5. The Sahara is the largest desert in the world. 6. The Nile is the longest river in the world. Talk about geography and nature. Qomolangma The Nile The Caspian Sea The Sahara 珠穆朗玛峰 里海 尼罗河 撒哈拉沙漠 about 9,600,000 square kilometers in size 1,025 meters deep 6,671 kilometers long 8,844.43 meters high Qomolangma The Sahara The Caspian sea The Nile 1a Match the facts you know. 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 Listen and complete the sentences. higher the biggest the deepest the longest 对三者或三者以上的人或物进行比较时用最高级。形容词最高级前面要加定冠词the，后面可带of/in短语来说明比较范围： 主语+系动词+the+形容词最高级+of短语/in短语 形容词最高级的用法 The father is the strongest of the three. 形容词最高级前必须加定冠词the，但如果最高级前有物主代词、指示代词、名词所有格修饰时，则不用定冠词。 形容词最高级前可用序数词限定，共同修饰后面的名词，其结构为“the +序数词+形容词最高级+名词”。 My oldest daughter is 16 years old. Hainan is the second largest island in China. 形容词最高级的用法 8 形容词最高级的用法 表示“最......之一” 用“one of +最高级+名词复数”。表示“第几个最......”时，用“the first (second)+最高级+名词单数”。 Beijing is one of the biggest cities in the world. 形容词最高级的意义还可以用比较级形式表达。 This is more difficult than any other book here. 9 1c A: What is the highest mountain in the world? B: Qomolangma. Use the info