八年级下册第七单元1.ppt

,Unit 7Whats the highest mountain in the world?(section A),Qomolangma,8,844.43 meters high,the highest mountain in the world,the Nile,6,671 kilometers long,the longest river in the world,the Caspian Sea,1,025 meters deep,the deepest of all the salt lakes,the Sahara,about 9,600,000 square kilometers in size,the biggest desert in the world,the Yangtze River6,300 kilometers long,the Yellow River5,464 kilometers long,The Yangtze River is longer than the Yellow River.,8,844.43 meters high,6,671 kilometers long,1,025 meters deep,9,600,000 square kilometers in size,数词+单位祠+high tall long deep in size wide,Mount Emei is about 3,000 meters high.Huang Guoshu Waterfall is 77.8 meters high.,Yao Ming is 2.23 meters tall.The tree is about 5 meters tall.Our classroom is 3 meters tall and 8 meters wide.,The Yellow river is 5,464 kilometers long.The lake is about 20 meters deep.,My house is about 100 square kilometers in size.,China,the US,China has a population of more than 1,300,000,000.,The population of the US is over 300,000,000.,The population of China is a lot bigger than the population of the US.,something about China and the US,China is 9,600,000 square kilometers in size.,The US is also 9,600,000 square kilometers in size.,China is as big as the US.,China is 5,000 years old.,The US is only 300 years.,China has a much longer history than the US.,ConversationGuide:Feel free to ask me anything on tadays Great Wall tour.Tourist 1:How long is the wall?Guide:Ah,the most popular question!If were only talking about the parts from the Ming Dynasty,its about 8,850 kilometers long.This is the longest wall in the world.,Tourist 2:Wow,thats amazing!Why did the ancient emperor build the wall?Guide:The main reason was to protect their part of the country.As you can see,its quite tall and wide.As far as I know,there are no man-made objects as big as this.Tourist 3:Is Badaling part of the Ming Great Wall?Guide:Yes,its the most famous part.,