初中英语人教版八年级下册Unit7SectionA.ppt

1、Unit 7Whats the highest mountain in the world?,Section A (1a-2c),Numbers and Expressions,Can you read them?,8 25 185 3605,eight twenty-five one hundred and eight-five three thousand six hundred and five,111 2,222 33,333 444,444 5,555,555 66,666,666 777,777,777 8,888,888,888 99,999,999,999 123,456,78

2、9,123,thousand(千),million（百万）,billion（十亿）,Tip（提示）：With commas, theyre easy to read.,Read and learn,1000以上的基数词的表示法。先从右到左数，每三位数加一个逗点。第一个逗点前的数为thousand(千)，第二个逗点前的数为million(百万)，第三个逗点前的数为billion(十亿)。,1,025 6,671 9,600,000 8,844.43,1,025 : 6,671 : 9,600,000: 8,844.43:,one thousand and twenty-five six thou

3、sand six hundred and seventy-one nine million six hundred thousand eight thousand eight hundred and forty-four point four three,Have a try！,Top of the world,Qomolangma,Whats the highest mountain in the world?,mountain,Its 8844.43 meters high.,How high is it?,the Sahara,desert,Whats the biggest deser

4、t in the world?,Its about 9,600,000 km2 in size .（square kilometers）,How big is it?,the Caspian Sea,salt lake,Whats the deepest of all the salt lakes?,Its 1,025 meters deep.,How deep is it?,the Nile,river,Whats the longest river in the world?,Its 6,671 kilometers long.,How long is it?,1. Qomolangma

5、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,咸水湖,其它的任何山脉,1b.listen and complete the sentences,summary,二、对于物体长、宽、高、深度 、面积等的表达 How long/w

6、ide/high/tall/deep/big + is/are +主语？ Its/Theyre+基数词+度量词+adj.,一、 形容词和副词的最高级 适用范围： 构成： 形容词/副词比较级和 最高级的变化规则：,eg：-How deep is it? -Its 1,025 meters deep.,三者或三者以上,主+be/实动 +the +形/副最高级+名词+in/of 短语,一般情况 以不发音e结尾的单音节词 在重读闭音节 以“辅音字母y”结尾的双音节词 其他双音节词和多音节词 少数不规则,key words： river, long ， about 6,300 kilometers,Th

7、e Yangtze River is_in China. It is about _.,Talk about the top of China!,the longest river,6,300 kilometers long,key words： large , salt lake ,75 meters deep,Talk about the top of China!,Qinghai Lake is salt lake in China. It is .,the largest,75 meters deep,key words：big, square, about 440,000 squar

8、e meters,Talk about the top of China!,Tiananmen Square is in China. It is .,the biggest square,about 440,000 square meters in size,Talk about the top of China!,key words： waterfall, big, 77.8 meters,Huangguoshu Waterfall is in China. Its .,the biggest waterfall,77.8 meters high,key words： long，wall

9、, about 8,850 kilometers,Talk about the top of China!,The Great Wall_ in China. It is_,is the longest wall,about 8,850 kilometers long,_ 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

10、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, but it is the biggest country in Asia.,4 2 1 3,6,300 5,000 5,464 300,6,300,5,464,5,000,300,2a、2b.number the facts in order and fill in the

11、blanks with the numbers,Good job!,Look and Say（看谁说得又准又快）,A letter to our country As is well known to us all,China is one of the oldest countries in the world.In fact ,It has a more long history than we have ever known,China has the largest number of population in the world,There are fifty-six peoples in our country.We get along well with each other and nothing can break