2019年春八年级英语下册Unit7What’sthehighestmountainintheworld（第1课时） 10页

Unit 7　What’s the highest mountain in the world? Section A(1a-2d) 任务一:根据Model, 描述以下三大景观 Qomolangma; 8, 844.43 meters high Model:Qomolangma is 8, 844.43 meters high.It is the highest mountain in the world. the Nile; 6, 671 kilometers long 1.The Nile is 6,671 kilometers long.It is the longest river in the world.  the Caspian Sea; 1, 025 meters deep 2.The Caspian Sea is 1,025 meters deep.It’s the deepest lake of all the salt lakes.  the Sahara; about 9, 600, 000 square kilometers in size 3.The Sahara is about 9,600,000 square kilometers in size.It’s the biggest desert in the world.  任务二: 词组连线 1.1, 025 meters deep　1 025米深 6, 671 kilometers long　6 671千米长 8, 844.43 meters high　8 844.43米高 剖析 (1)此处为“基数词+meters/kilometers+deep/long/wide/high” 结构, 表示某物有多深、多长、多宽、多高等。 The Yellow River is 5,464 kilometers long. 黄河有5 464千米长。 The street is 10 meters wide. 这条街有10米宽。 (2)数字的读法 百位以上数字的表达方式 1, 000 读作:a/one thousand 10, 000 读作:ten thousand 100, 000 读作:a/one hundred thousand 1, 000, 000 读作:a/one million 1, 000, 000, 000 读作:a/one billion 比如:1, 234 读作:one thousand, two hundred and thirty-four 4, 567, 809 读作:four million, five hundred and sixty-seven thousand, eight hundred and nine 5, 678, 720, 000 读作:five billion, six hundred and seventy-eight million, seven hundred and twenty thousand 2.China has the biggest population in the world. 中国拥有世界上最多的人口。 剖析 population 作名词, 意为“人口, 人口数量”。population单独 作主语时, 谓语动词用第三人称单数形式。 The population of the city is 300, 000. 这个城市的人口是30万。 拓展 ①分数或百分数修饰population作主语时, 谓语动词常用 复数形式。 Thirty percent of the population live in the city. 30%的人口住在城市。 ②对人口的数量提问用what。 What’s the population of Beijing? 北京的人口是多少? ③表示某地有多少人口时用“have a population of+数字”。 The town has a population of about forty thousand. 这个镇有大约4万人口。