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1、 Unit 7 Whats the highest mountain in the world？Section ADo you know these interest places?Qomolangma Qomolangma runs along the border between China and Nepal.It is covered with snow all the year round.Its 8844.43 high,the highest in the world.The Sahara is the biggest desert in the world.It is loca
2、ted in the northern Africa,climate conditions are very bad,is one of the earths most not suitable for biological survival.撒哈拉撒哈拉沙漠沙漠约形成于约形成于250万年前，万年前，是世界仅次于南极洲的第是世界仅次于南极洲的第2大荒漠，也是世界最大的大荒漠，也是世界最大的沙质沙质荒漠。它位于荒漠。它位于非洲非洲北部，该地区气候条件非常恶劣，是地北部，该地区气候条件非常恶劣，是地球上最不球上最不适合适合生物生存的地方之一。其总面积约容得下整生物生存的地方之一。其总面积约容得下整
3、个个美国美国本土本土The SaharaThe Caspian Sea The Caspian Sea里海里海 is the biggest salt lake in the world.It lies in the border between Asia and Europe.是世界上最大的湖泊且为是世界上最大的湖泊且为咸水湖咸水湖，位于欧洲和亚洲的交界处位于欧洲和亚洲的交界处 The Nile is the longest river in the world.Its more than 6600 kilometers long.It runs through 9 countries,it
4、s one of the largest river flows through the international states in the world and runs into the Mediterranean Sea(地中海地中海)in the end.The Nile读下面的数字：读下面的数字：hundred234，546，789，202，读下面的数字：读下面的数字：thousand1,234 4,546 3,789 26,202 17,052 489,603读下面的数字：读下面的数字：million6,551,234 5,234,546 9,643,789 26,000,002
5、 326 ,414 ,718 million thousand （百万）（百万）（千千 ）大数的表达大数的表达小数的表达小数的表达:0.3 zero point three 24.59 twenty-four point five nine tall /high long主语主语+be +数词数词 +量词量词 +wide deep thick in sizeEg:YaoMing is 2 meters tall.The hole is 10 kilometers deep.The book is 5 centimeters thick The room is 40 square meters
6、in size翻译句子翻译句子 1.这张桌子两米长，一米宽。这张桌子两米长，一米宽。2.这座山有这座山有1500米高。米高。3.这栋楼这栋楼120米高。米高。4.这本字典有五厘米厚。这本字典有五厘米厚。5.这个湖有多深？这个湖有多深？1025米深。米深。The table is two meters long and one meter wide.The mountain is 1,500 meters high.The building is 120 meters tall.The dictionary is five centimeters thick.How deep is the la
7、ke?Its 1,o25 meters deep.翻译句子翻译句子:1.珠穆朗玛峰是珠穆朗玛峰是8,844.43米高米高.2.撒哈拉沙摸是撒哈拉沙摸是 9,600,000平方千米。平方千米。3.里海是里海是1，025米深米深。4.尼罗河是尼罗河是 6，671千米长千米长。Practice in pairs like this:A:How high/big/deep/long is +主语主语B:主语主语 +be +数词数词 +量词量词 +high/deep/.What is the highest mountain in the world?What is the biggest desert in the world?What is the deepest salt lake in the world?What is the longest river in the world?QomolangmaThe SaharaThe Caspian SeaThe NileA:To make some dialogues about asking the size of objects.(8 组句子组句子）B:练习册练习册P145 1 和和 P146 2