初中英語人教版八年級下冊Section A 1a—2d21 課件

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；縱深的深的；縱深的n. 沙漠沙漠n. 人口；人口數(shù)量人口；人口數(shù)量n. 亞洲亞洲Words reviewQomolangmatumu,l:mthe Nl nailthe Caspian Sea kspinthe Saharash:rthe Yangtze Riverjtsithe Yellow River珠穆朗瑪峰珠穆朗瑪峰尼羅河尼羅

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長江長江黃河黃河Words review1000以上的基數(shù)詞的表示法以上的基數(shù)詞的表示法:先從右至左，每三位加一個逗號。先從右至左，每三位加一個逗號。如：如：1,234,567,890one billion two hundred and thirty four million five hundred and sixty seven thousand eight hundred and ninety 從右到左三逗（，）開，從右到左三逗（，）開，一逗是一逗是千千thousand，二逗二逗百萬百萬三逗三逗十億，從左到右分開讀十

3、億，從左到右分開讀保你準確速度快，保你準確速度快，遇見個位或十位，遇見個位或十位，加上加上and別忘記。別忘記。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 珠穆朗瑪峰（珠穆

5、朗瑪峰（Qomolangma）簡稱珠峰，又意譯作圣母）簡稱珠峰，又意譯作圣母峰。該峰位于峰。該峰位于中華人民共和國和尼泊爾交界中華人民共和國和尼泊爾交界的喜馬拉雅山的喜馬拉雅山脈之上，脈之上，終年積雪終年積雪。珠穆朗瑪峰。珠穆朗瑪峰海拔海拔8844.43米米，同時每，同時每年增長年增長1.2厘米，是世界第一高峰，是一條近似東西向的厘米，是世界第一高峰，是一條近似東西向的弧形山系，位于喜馬拉雅山中端、中尼邊界上和西藏日喀弧形山系，位于喜馬拉雅山中端、中尼邊界上和西藏日喀則地區(qū)定日縣正南方。山體呈巨型金字塔狀，有巨大冰川，則地區(qū)定日縣正南方。山體呈巨型金字塔狀，有巨大冰川，最長達最長達26公里公里

6、。Do you know these interesting places?The Nile 尼羅河尼羅河(the Nile)是一條流經(jīng)非洲東部與北部的河是一條流經(jīng)非洲東部與北部的河流，自南向北注入地中海。與中非地區(qū)的剛果河流，自南向北注入地中海。與中非地區(qū)的剛果河以及西非地區(qū)的尼日爾河并列非洲最大的三個河以及西非地區(qū)的尼日爾河并列非洲最大的三個河流系統(tǒng)。尼羅河流系統(tǒng)。尼羅河長長6671公里公里，是，是世界上最長的河世界上最長的河流流。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為咸水湖為咸水湖，位于，位于歐洲和亞洲歐洲

7、和亞洲的交界處，面積最大的交界處，面積最大的淡水湖則是蘇必利爾湖。里海擁有與海洋相似的淡水湖則是蘇必利爾湖。里海擁有與海洋相似的生態(tài)系統(tǒng)，海運業(yè)發(fā)達。的生態(tài)系統(tǒng)，海運業(yè)發(fā)達。The Sahara 撒哈拉沙漠約形成于二百五十萬年前，是世界撒哈拉沙漠約形成于二百五十萬年前，是世界最大的沙質(zhì)荒漠。它位于非洲北部，氣候條件非最大的沙質(zhì)荒漠。它位于非洲北部，氣候條件非常惡劣，是地球上最不適合生物生存的地方之一。常惡劣，是地球上最不適合生物生存的地方之一。其總面積約其總面積約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.如何描述物體的長寬高？

15、如何描述物體的長寬高？談?wù)撐矬w的談?wù)撐矬w的寬度寬度深度深度高度高度長度長度tall/highdeeplongwide - Its + 數(shù)量數(shù)量+high/tall/long/wide/deep.1. - How high/tall/long/wide/deep.+ is + 主語主語?常見句型常見句型2. 數(shù)詞數(shù)詞+ square kilometer(s) 數(shù)詞數(shù)詞+ square meter(s) in size英語表示英語表示“有多長（寬，高有多長（寬，高）”時，一般將時，一般將_和和_放在表示放在表示長寬高長寬高的形容詞的形容詞_。數(shù)詞數(shù)詞數(shù)量單位數(shù)量單位前前翻譯句子：翻譯句子： 1.

16、這張桌子兩米長。這張桌子兩米長。2. 這座山有這座山有1,500米高。米高。3. 這棟樓這棟樓120米高。米高。4. 這個湖有多深？這個湖有多深？ 1,025米深。米深。5. 黃河有多長？黃河有多長？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