初中英语人教版八年级下册Section A 1a—2d21 课件

1、Unit 7 Whats the highest mountain in the world?Section A1a-2csquare meterdeepdesertpopulationAsia n. 平方；正方形平方；正方形n. 米；公尺米；公尺adj. 深的；纵深的深的；纵深的n. 沙漠沙漠n. 人口；人口数量人口；人口数量n. 亚洲亚洲Words reviewQomolangmatumu,l:mthe Nl nailthe Caspian Sea kspinthe Saharash:rthe Yangtze Riverjtsithe Yellow River珠穆朗玛峰珠穆朗玛峰尼罗河尼罗

2、河里海（世界最大的咸里海（世界最大的咸水湖）水湖）撒哈拉沙漠撒哈拉沙漠长江长江黄河黄河Words review1000以上的基数词的表示法以上的基数词的表示法:先从右至左，每三位加一个逗号。先从右至左，每三位加一个逗号。如：如：1,234,567,890one billion two hundred and thirty four million five hundred and sixty seven thousand eight hundred and ninety 从右到左三逗（，）开，从右到左三逗（，）开，一逗是一逗是千千thousand，二逗二逗百万百万三逗三逗十亿，从左到右分开读十

3、亿，从左到右分开读保你准确速度快，保你准确速度快，遇见个位或十位，遇见个位或十位，加上加上and别忘记。别忘记。Can you read them?9,600,000 1,0256,671 8,844.43I can read them!9,600,0001,0256,6718,844.43 one thousand and twenty fiveeight thousand eight hundred and fourty-fourpoint four threesix thousand six hundred and seventy-onenine million six hundred

4、thousandQomolangma is the highest mountain in the world. It is 8,844.43 meters high.The Caspian Sea 1，025 meters deepWhat do you know about the following numbers?6,671 kilometers longThe NileWhat do you know about the following numbers?9,600,000 square kilometers in sizeThe SaharaQomolangma 珠穆朗玛峰（珠穆

5、朗玛峰（Qomolangma）简称珠峰，又意译作圣母）简称珠峰，又意译作圣母峰。该峰位于峰。该峰位于中华人民共和国和尼泊尔交界中华人民共和国和尼泊尔交界的喜马拉雅山的喜马拉雅山脉之上，脉之上，终年积雪终年积雪。珠穆朗玛峰。珠穆朗玛峰海拔海拔8844.43米米，同时每，同时每年增长年增长1.2厘米，是世界第一高峰，是一条近似东西向的厘米，是世界第一高峰，是一条近似东西向的弧形山系，位于喜马拉雅山中端、中尼边界上和西藏日喀弧形山系，位于喜马拉雅山中端、中尼边界上和西藏日喀则地区定日县正南方。山体呈巨型金字塔状，有巨大冰川，则地区定日县正南方。山体呈巨型金字塔状，有巨大冰川，最长达最长达26公里公里

6、。Do you know these interesting places?The Nile 尼罗河尼罗河(the Nile)是一条流经非洲东部与北部的河是一条流经非洲东部与北部的河流，自南向北注入地中海。与中非地区的刚果河流，自南向北注入地中海。与中非地区的刚果河以及西非地区的尼日尔河并列非洲最大的三个河以及西非地区的尼日尔河并列非洲最大的三个河流系统。尼罗河流系统。尼罗河长长6671公里公里，是，是世界上最长的河世界上最长的河流流。The Caspian Sea 里海（里海（the Caspian Sea）是世界上）是世界上最大的湖泊且最大的湖泊且为咸水湖为咸水湖，位于，位于欧洲和亚洲欧洲

7、和亚洲的交界处，面积最大的交界处，面积最大的淡水湖则是苏必利尔湖。里海拥有与海洋相似的淡水湖则是苏必利尔湖。里海拥有与海洋相似的生态系统，海运业发达。的生态系统，海运业发达。The Sahara 撒哈拉沙漠约形成于二百五十万年前，是世界撒哈拉沙漠约形成于二百五十万年前，是世界最大的沙质荒漠。它位于非洲北部，气候条件非最大的沙质荒漠。它位于非洲北部，气候条件非常恶劣，是地球上最不适合生物生存的地方之一。常恶劣，是地球上最不适合生物生存的地方之一。其总面积约其总面积约9,600,000平方公里。平方公里。1a Match the facts you know.Qomolangma about 9,

8、600,000 square kilometers in sizeThe Sahara 1,025 meters deepThe Caspian Sea 6,671 kilometers longThe Nile 8,844.43 meters highQomolangma is 8844.43 meters high.The Sahara isThe Caspian Sea isThe Nile is1b Listen and complete the sentences.1. Qomolangma is _ than any other mountain in the world. 2.

9、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.higherthe biggestthe deepestthe longestGuess A: What is the highest mountain in the world?B: Qomolangma. 1c Use the information in 1b to make conversations.A: What is the biggest des

10、ert in the world?B: The Sahara. A: What is the deepest salt lake in the world?B: The Caspian sea. A: What is the longest river in the world?B: The Nile. A: What is the in the ?B: Listen and number the facts 1-4in the order you hear them._ The Yangtze River is about _ kilometers long and the Yellow R

11、iver is _ kilometers long._ China has the biggest population in the world. Its a lot bigger than the population of the US. _ China is over _ years old. It has a much longer history than the US. The US is not even _ years old._ China is almost as big as the US, and it is the biggest country in Asia.2

12、a1432_The Yangtze River is about _ kilometers long and the Yellow River is _ kilometers long._ China has the biggest population in the world. Its a lot bigger than the population of the US. _ China is over _ years old. It has a much longer history than the US. The US is not even _ years old._ China

13、is almost as big as the US, and it is the biggest country in Asia.Listen again and fill in the blanks in 2a with the numbers in the box. 2b6,3005,4645,0003006,300 5,000 5,464 30014322c.Make the conversations using the information in 2b. A:Did you know that China is one of the oldest countries in the

14、 world?B:Yes, I did. It is much older than our country.A: How high is Qomolangma?B: Its 8,844 meters high.A: How deep is the Caspian Sea?B: Its 1,025 meters deep.A: How long is the Nile?B: Its 6,671 kilometers long.A: How big is the Sahara?B: Its about 9,600,000 square kilometers in size.如何描述物体的长宽高？

15、如何描述物体的长宽高？谈论物体的谈论物体的宽度宽度深度深度高度高度长度长度tall/highdeeplongwide - Its + 数量数量+high/tall/long/wide/deep.1. - How high/tall/long/wide/deep.+ is + 主语主语?常见句型常见句型2. 数词数词+ square kilometer(s) 数词数词+ square meter(s) in size英语表示英语表示“有多长（宽，高有多长（宽，高）”时，一般将时，一般将_和和_放在表示放在表示长宽高长宽高的形容词的形容词_。数词数词数量单位数量单位前前翻译句子：翻译句子： 1.

16、这张桌子两米长。这张桌子两米长。2. 这座山有这座山有1,500米高。米高。3. 这栋楼这栋楼120米高。米高。4. 这个湖有多深？这个湖有多深？ 1,025米深。米深。5. 黄河有多长？黄河有多长？The table is two meters long.The mountain is 1,500 meters high.The building is 120 meters tall.How deep is the lake? Its 1,025 meters deep. How long is the Yellow River?9,660,1701,111,111,1115,201,314 nine million six hundred and sixty thousand one hundred and seventy-one one billion one hundred and eleven million on