八下U7SectionA（1a-1c）.ppt

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1、Its 8844.43 meters（米）（米）high,the highest mountain in the world.Qomolangma珠穆朗玛峰珠穆朗玛峰 The Nile is the longest river in the world.Its 6,671 kilometers long.the Nile尼罗河尼罗河Do you know these places?the Caspian Sea里海里海 The Caspian Sea is 1,025 meters deep（深的）（深的）.It is the deepest of all the salt lakes(盐湖盐

2、湖).The Sahara is the biggest desert（沙漠）（沙漠）in the world.Its about 9,600,000 square（平（平方）方）kilometers in size.the Sahara撒哈拉沙漠撒哈拉沙漠生词学习生词学习Qomolangma/tumu la:gm:/珠穆朗玛珠穆朗玛峰峰the Nile/nail/尼罗河尼罗河the Caspian /kspin/Sea里海里海the Sahara/s:ha:r/撒哈拉沙漠撒哈拉沙漠square /skw/n.平方平方meter/mi:t/n.米米deep/di:p/adj.深的深的deser

3、t/des:t/n.沙漠沙漠1a Match the facts you know.Qomolangma about 9,600,000 square kilometers in sizeThe Sahara1,025 meters deepThe Caspian Sea6,671 kilometers longThe Nile8,844.43 meters highHow high is Qomolangma?Its 8,844.43 meters high.How big is the Sahara?Its about 9,600,000 square kilometers in size

4、.How deep is the Caspian Sea?Its 1,025 meters deep.How long is the Nile？Its 6,671 kilometers long.探究一 1）对于物体长、宽、高、深度、面积的表达Eg:20米长 20 meters long;10米宽 _;15米深 _;30 米高 _;2平方米 2 square meters.表达长、宽、高、深度：表达长、宽、高、深度：数词 meters/kilometers long/wide/high/deep表达面积：表达面积：数词 square meters/kilometers10 meters wid

5、e15 meters deep30 meters highWhat do you know about these places?the Caspian Sea里海里海The Sahara撒哈拉撒哈拉The Nile尼罗河尼罗河Qomolangma珠穆朗玛峰珠穆朗玛峰1b Listen 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 sa

6、lt lakes.4.The Nile is _ river in the world.higherthe biggestthe deepestthe longest注意：形容词的最高级前注意：形容词的最高级前一定要有定冠词一定要有定冠词the。than后接比较的对象，比后接比较的对象，比较级标志；较级标志；in，of表示比表示比较的范围，最高级标志。较的范围，最高级标志。注意：注意：any other意思为意思为“其他任何一个其他任何一个”，其后，其后面跟名词的单数形式。面跟名词的单数形式。1b Listen and complete the sentences.1.Qomolangma i

7、s _ 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 longestRead the sentences together,please!看图说话看图说话要求：要求：1.分别用比较级分别用比较级 和和 最高级造一个句子。最高级造一个句子。2.请使用如下关键词：请使用如下关

8、键词：tall，than，of，boyThis boy is taller than any other boy in our class.This boy is the tallest of all the boys in our class.看图说话看图说话要求：要求：1.分别用比较级分别用比较级 和和 最高级造一个句子。最高级造一个句子。2.请使用如下关键词：请使用如下关键词：big，than，of，ballThis ball is bigger than any other ball.This boy is the biggest of all the balls.看图说话看图说话要求

9、：要求：1.分别用比较级分别用比较级 和和 最高级造一个句子。最高级造一个句子。2.请使用如下关键词：请使用如下关键词：long，than，of，rulerThis ruler is longer than any other ruler.This ruler is the longest of all the rulers.探究二（2）熟练掌握下列句型：主语+adj/adv 比较级+than 主语+adj/adv最高级+in+地点 主语+adj/adv最高级+ofHe is taller than any other student in our class._He is the talle

10、st student in our class.He is the tallest of all the students.A:What is the highest mountain in the world?B:Qomolangma.Qomolangma珠穆朗玛峰珠穆朗玛峰 Qomolangma珠穆朗玛峰珠穆朗玛峰the Nile尼罗河尼罗河the Sahara撒哈拉沙漠撒哈拉沙漠the Sahara撒哈拉沙漠撒哈拉沙漠A:What is the highest mountain in the world?B:Qomolangma.A:What is the biggest desert

11、in the world?B:The Sahara.A:What is the deepest of all the salt lakes？B:The Caspian Sea.A:What is the longest river in the world?B：The Nile.Summary(1)Qomolangma/tumu la:gm:/珠穆朗玛珠穆朗玛峰峰the Nile/nail/尼罗河尼罗河the Caspian /kspin/Sea里海里海the Sahara/s:ha:r/撒哈拉沙漠撒哈拉沙漠square /skw/n.平方平方meter/mi:t/n.米米deep/di:p/

12、adj.深的深的desert/des:t/n.沙漠沙漠Summary(2)（1）表达长、宽、高、深度：表达长、宽、高、深度：数词数词 meters/kilometers long/wide/high/deep表达面积：表达面积：数词数词 square meters/kilometers（2）表达比较的句型：）表达比较的句型：主语主语+adj/adv 比较级比较级+than 主语主语+adj/adv最高级最高级+in+地点地点 主语主语+adj/adv最高级最高级+ofTalk about these pictures!(要求：要用上比较级或者最高级。)The Yangtze River(长江)

13、is about 6,300 kilometers long.Its the longest river in China.The Nile is 6,671 kilometers long.It is the longest river in the world.the Nile尼罗河尼罗河The Sahara is about 9,600,000 square kilometers in size.Its the biggest desert in the world.The SaharaThe SaharaQomolangma is 8,844.43 meters high.Its higher than any other mountain in the world.QomolangmaQomolangmaThe Caspian Sea is 1,025 meters deep.Its the deepest of all the salt lakes.the Caspian Sea里海里海We love China!