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1、Unit 7 Section APeriod 1(1a-1c)Whats the highest mountain in the world?Unit 7 Whats the highest mountain in the world?Unit 7 Whats the highest mountain in the world?Whats the highest mountain in the world?Unit 7 Whats the highest mountain in the world?Unit 7 Whats the highest mountain in the world?U
2、nit 7 To learn to compare facts 比较事物比较事物To learn to express large numbers 表达大的数目表达大的数目To learn to talk about geography and nature 谈论地理、自然谈论地理、自然To learn new wordsmountaindesertriverlakesalt lakefresh lakeThe top of the world.世界之最世界之最Whats the highest mountain in the world?tumul:m珠穆朗玛Whats the bigges
3、t desert in the world?sh:r撒哈拉 Whats the deepest salt lake in the world?kspin 里海Whats the longest river in the world?尼罗河nail 1,025 6,671 8,844.439,600,000one thousand and twenty fiveeight thousand eight hundred andfourty-four point four threesix thoudsand six hundred and seventy-onenine million百万百万 s
4、ix hundred thousandCan you read the numbers?What do you know about the numbers?英文数字中的第四位，第七位，第十位数是英文数字中的第四位，第七位，第十位数是很关键的数位。大数字每三位数用逗号隔开，很关键的数位。大数字每三位数用逗号隔开，从右至左第一个逗点读作从右至左第一个逗点读作thousand，第二，第二个逗点读作个逗点读作million，第三个逗点读作，第三个逗点读作billion.英语中大数字的读法英语中大数字的读法How deep is the Caspian Sea?The Caspian Sea 里海里海
5、1,025It is 1,025 meters deep.adj.深的深的cn.米米Its the deepest salt lake in the world.It is deeper than any other salt lake in the world.How long is the Nile?The Nile 尼罗河尼罗河6,671 It is 6,671 kilometers .千米千米Its the longest river in the world.It is longer than any other river in the world.How big is the S
6、ahara?The Sahara撒哈拉撒哈拉9,600,000It is about 9,600,000 square kilometers in size.n.平方，广场平方，广场n.沙漠沙漠Its the biggest desert in the world.It is bigger than any other desert in the world.How high is Qomolangma?Qomolangma 8,844.43 It is 8,844.43 meters high.Where is it?It is in Asia.n.亚洲亚洲Its the highest m
7、ountain in the world.Its higher than any other mountain in the world.1aMatch the facts you know.1bListen and complete the sentences.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.higherthe biggestthe deepestthe longest Make conversations.1cA:Whats the highest mountain in the world?B:Qomolangma is the highest mountain in the world.C:Yes,Qomolangma is higher than any other mountain in the world.D:How high is it?E:Its 8,844.43 meters high.