2014英语八下Unit 7 全单元-课件（PPT-精）PPT格式课件下载.pptx

1、Whats the longest river in the world?Lead inHow high is Qomolangma?Its 8,844 meters high.The height of Qomolangma is 8,844.43 meters.The highest mountain in the world is 8,844.43 meters high.The longest riverthe NileThe biggest salt lakesthe Caspian SeaThe biggest desert in the worldthe SaharaHow bi

2、g is the Sahara?Its about 9,600,000 square kilometers in size.The biggest desert in the world is about 9,600,000 square kilometers in size.Qomolangmaabout 9,600,000 squarekilometers in sizeT h1eaSMa haatrcah the facts you kn1,o0w2 5.meters deepThe Caspian Sea6,671 kilometers longThe Nile8,844.43 met

3、ers high1b Listen and complete the sentences.1.Qomolangma is higher than any other mountain in the world.2.The Sahara isthe biggest desert in the world.3.The Caspian Sea isthe biggestof all the salt lakes.4.The Nile is the longest river in the world.2a Listen and number the facts1-4 in the order you

4、 hear them.6,300 5,000 5,464300 1 The Yangtze River is about kilometers long and the Yellow River is kilometers long.4 China has the biggest population in the world.Its a lot bigger than the population of the US.3 China is over years old.It has a much longer history than the US.The US is not even ye

5、ars old.2 China is almost as big as the US,but it is the biggest country in Asia.long and the Yellow River iskilometers long.2b Listen again and fill in the blanks in 2a with the numbers in the box.1 The Yangtze River is about6300kilometers5,464 4China has the biggest population in the world.Its a l

6、ot bigger than the population of the US.3China is over5,000years old.It has a much longer history than the US.The US is not even 300 years old.2China is almost as big as the US,but it is the biggest country in Asia.2c Make conversations using the information in 2a.Did you know that China is one of t

7、he oldest countries in the world?Yes,I did.Its much older than my country.2d Role-play the conversation.3a Read the article and match each paragraph with the main ideas.Pragraph1 Pragraph2 Pragraph3Spirit of climbers Achievements of climbers Facts and dangersParagraph 1Paragraph 2Paragraph 1&3L i s

8、t3f obuRr ead theLairs ttitchlree eagain and comL ips tleftoeu rthe chart.dangers forachievementscomparisonsclimbersthick clouds1953-Tenzing Norgay and Edmund Hillary were the first to reach the topmost dangerous sportsnow,freezingweather and heavy storms1960-the first Chinese team1975-the first wom

9、anthe popular placesthe highestmountainthe most famous3c Answer the questions using information in the article.1.Where are the Himalayas?They run along the southwestern part of China.2.How high is Qomolangma?8,844.43 metres high.3.Why do so many people try to climb this mountain even though it is da

10、ngerous?Because people want to challenge themselves in the face of difficulties.4.What does the spirit of the climbers tell us?We should never give up trying to achieve our dreams.Grammar形容词和副词的 比较级和最高级形容词和副词的比较级和最高级（规则变化）单音节词和少数多音节词 一般在词尾加-er 或-est原级比较级最高级highstrongfastslowhigherhigheststrongerstro

11、ngestfasterfastestslowerslowest以字母e结尾的词，加-r 或-st原级比较级最高级finelatefinerfinestlaterlatest以“辅音字母+y”结尾的双音节词，先改“y”为“i”再加-er或-est原级比较级最高级easyluckyearlyeasiereasiestluckierluckiestearlierearliest多音节词和部分双音节词在词前加more或most原级比较级最高级deliciousinterestingeasilycarefullymore deliciousmost deliciousmore interestingmo

12、st interesting more easilymost easily more carefullymost carefullylessfarther furtherleastfarthest furthest原级（不规则变化）比较级最高级betterbestworseworstmoremostgood/wellbad/badlymany/muchlittlefar1.Qomolangma is 8,844.43 meters high.珠穆朗玛峰高8 844.43米。The Caspian Sea is 1,025 meters deep.里海深1 025米。The Nile is 6,

13、671 kilometers long.尼罗河长6 671千米。知识点精讲【自主领悟】数词+meters（kilometers）+long（high/tall/wide/deep/thick/heavy.）,是英语中表示计量的方法,其中表示人、树的高度用tall,表示物体的高度用high。例如:My English teacher is 1.82 meters tall.我的英语老师高一米八二。【归纳拓展】英语中表示计量的其他方法长、宽、高还可以用复合形容词,即“数字+量词（单数）+long/wide/high.”表达,中间加连字符,常用作定语。This is a ten-meter-wide

14、 street,and the traffic is busy.这条路宽十米,交通繁忙。【活学活用】黄河长5 464千米。The Yellow River is 5,464 .死海约深392米。The Dead Sea is about 392 .The mountain is 1,500 meters high.（改为同义句）It is a mountain.答案:kilometers longmeters deep1,500-meter-high2.China has the biggest population in the world.中国有世界上最多的人口。【自主领悟】populat

15、ion意为“人口”,为不可数名词,在表示人口“多”“少”时,用large（big）和small修饰。特指某一地区或某一国家的“人口”时,其前常加定冠词the。The population of my hometown is small.我家乡的人口很少。【归纳拓展】population的不同用法population作主语时,谓语动词常用单数形式,但如果有分数或百分数等修饰时谓语动词用复数形式。问某地人口多少常 用Whats the population of.?Whats the population of South Africa?南非的人口是多少?【活学活用】加拿大的人口是多少?of Ca

16、nada?印度人口相当多。The population of India so.新加坡四分之三的人口是中国人。Three quarters of the population in Singapore Chinese.答案:Whats the populationis;large/bigare3.China is over 5,000 years old.It has a much longer history than the US.中国有五千多年的历史,比美国历史要长得多。【自主领悟】表示两者比较时用比较级,longer是形容词long 的比较级,修饰比较级常用much,a lot或是a little等。The room is much cleaner than that one.这个房间比那个