初中英语人教版八年级下册sectionA 1a-2c.ppt

1、Whats the highest mountain in the world? How high is it?,Do you know?,Now let enjoy the beautiful scenes of Qomolangma:,Unit 7 Whats the highest mountain in the world?,Section A 1a-2c,Presentation,square n. 平方,meter n. 米,deep adj. 深的,desert n. 沙漠,population n. 人口,Asia n. 亚洲,tour v. n. 旅行,tourist n.

2、旅行者,wall n. 墙,amazing adj. 令人大为惊奇的,ancient adj. 古代的,wide adj. 宽的；宽阔和,Qomolangma,Qomolangma is the highest mountain in the world. It is 8,844.43 meters high.,What do you know about the following numbers?,1,025 meters deep,The Caspian Sea,What do you know about the following numbers?,6,671 kilometers

3、long,The Nile,What do you know about the following numbers?,9,600,000 square kilometers in size,The Sahara,Qomolangma,珠穆朗玛峰（Qomolangma）简称珠峰，又意译作圣母峰。该峰位于中华人民共和国和尼泊尔交界的喜马拉雅山脉之上，终年积雪。珠穆朗玛峰海拔8844.43米，同时每年增长1.2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26公里。,Do you know the

4、se interesting places?,The Nile,尼罗河(the Nile)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。尼罗河长6671公里，是世界上最长的河流。,The Caspian Sea,里海（the Caspian Sea）是世界上最大的湖泊且为咸水湖，里海深为1,025米，位于欧洲和亚洲的交界处，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

5、适合生物生存的地方之一。其总面积约9,600,000平方公里。,1000以上的基数词的表示法: 先从右至左数，每三位加一个逗点。 如：1,234,567,890 one billion two hundred and thirty four million five hundred and sixty seven thousand eight hundred and ninety 注: “无万借千”。 十前“and”。,一逗是千 二逗百万 三逗十亿,Can you read them?,9,600,000 1,025 6,671 8,844.43,aznd,mljn,bljn,I can re

6、ad them! 9,600,000 1,025 6,671 8,844.43,one thousand and twenty five,eight thousand eight hundred and fourty-four point four three,six thousand six hundred and seventy-one,nine million six hundred thousand,1a Match the facts you know.,Qomolangma is 8844.43 meters high. The Sahara is The Caspian Sea

7、is The Nile is,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 salt lakes. 4. The Nile is _ river in the world.,higher,the biggest,the deepest,the longest,Guess,A: What is the hi

8、ghest mountain in the world? B: Qomolangma.,1c Use the information in 1b to make conversations.,A: What is the biggest desert 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

9、? B: ,Qomolangma is higher than any other mountain in the world. Its 8,844.43 meters high.,What do you know about these places?,The Sahara,is the biggest desert in the world. Its about 9,600,000 square kilometers in size.,The Caspian sea,is the deepest of all the salt lakes.,The Nile,Its 6,671 kilom

10、eters long.,Its 1,025 meters deep.,is the longest river in the world.,1b. + 1a.,1b. + 1a.,1b. + 1a.,Listen and number the facts 1-4in the order you hear them.,_ The Yangtze River is about _ kilometers long and the Yellow River is _ kilometers long. _ China has the biggest population in the world. It

11、s 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.,2a,1,4,3,2,_The Yangtze River is about _ kilometers long and the Yellow Rive

12、r 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.,L

13、isten again and fill in the blanks in 2a with the numbers in the box.,2b,6,300,5,464,5,000,300,6,300 5,000 5,464 300,1,4,3,2,A: How high is Qomolangma? B: Its 8,844 meters high.,Read and find,A: How deep is the Caspian Sea? B: Its 1,025 meters deep. A: How long is the Nile? B: Its 6,671 kilometers l

14、ong. 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？,谈论物体的,宽度,深度,高度,长度,tall/high,deep,long,wide,- Its + 数量+high/tall/long/wide/deep.,1. - How high/tall/long/wide/deep.+ is + 主语?,常见句型,2. 数词+ square kilometer(s) 数词+ square meter(s),in size,Summary,英语表示“有多长（宽，高）”

15、时，一般将_和_放在表示长宽高的形容词_。,数词,数量单位,前,翻译句子： 1. 这张桌子两米长。 2. 这座山有1,500米高。 3. 这栋楼120米高。 4. 这个湖有多深？ 1,025米深。 5. 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.,Exercise,How long is the Yellow River?,Key phras

16、es,1. 平方千米 2. 在面积上 3. 比任何其他的 4. 所有的咸水湖中最深的 5. 世界上最高的山脉 6. 最多的人口 7. 比大许多 8. .的人口 9. 一段比长的多的历史 10. 和一样大 11.最古老的国家之一 12.比老得多,Homework,配套练习 Section A； 用所学描述长宽高的句型，造三 个句子； 找出文中所出现的形容词最高级 的短语，以小组为单位，总结最 高级用法。,1. population 人口；人口数量,population指“人口数量”, 作主语时,谓语动词要用单数形式。 这个城市的人口是600万。 The population of this ci

17、ty is six million 询问人口数量 “Whats the population of .? ” 不用how many或how much等提问. 表示人口“多”要用large/big/great; 表示人口“少”要用small。 指代population 的代词要用that。,Explaination,Practice,China has a large population. 中国人口众多。 France has a small population. 法国人口少。,The population of India is much _than _ of Russia. A. small,that B. larger,it C. smaller ,that D. bigger,that,2. Its much older than my country.,much older 意为“老得多”。 形容比较级前可用much, even, a little, a lot, a bit等修饰词表示程度。,Practice,他比我跑得更快。 He runs even faster than I. 我只比Tom年长一点儿。 Im a little older than To