英语人教版八年级下册Unit 7 Section A 第一课时.ppt

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1、Group work小组读小组读P120、P121单词单词一、全组齐读一、全组齐读2次。次。二、自己背诵二、自己背诵,不会的请教。不会的请教。三、对子一人说中文，三、对子一人说中文，另一人说英语。另一人说英语。英语基数词的读法口诀英语基数词的读法口诀 从右向左三逗从右向左三逗(,)排排,一逗千一逗千(thousand),二逗百万二逗百万(million),三逗就是十亿三逗就是十亿(billion),请读出以下数字请读出以下数字85读作读作:eighty-five320读作读作:three hundred and twenty5,463读作读作:five thousand four hundre

2、d and sixty-three请读出以下数字请读出以下数字9,600,000 5,678,120,000读作读作:nine million six hundred thousand读作读作:five billion,six hundred and seventy-eight million,one hundred and twenty thousandLets know about the world让我们了解让我们了解世界之最世界之最8,844.43 meters highabout 9,600,000 square kilometers in size1,025 meters deep

3、6,671 kilometers longHow high is Qomolangma?Its 8,844.43 meters high.世界最高峰世界最高峰：珠穆朗玛峰珠穆朗玛峰 8844.43 米高米高How big is the Sahara?世界上最大的沙漠世界上最大的沙漠：撒哈拉沙漠撒哈拉沙漠 大约大约960万平方千米万平方千米Its about 9,600,000 squarekilometers in size.How deep is the Caspian Sea?Its 1,025 meters deep.世界上最深的咸水湖世界上最深的咸水湖：里海里海 1025米深米深How

4、 long is the Nile?Its 6,671 kilometers long.世界上最长的河流世界上最长的河流：尼罗河尼罗河 6671千米长千米长How high is Qomolangma?Its 8,844.43 meters high.世界最高峰世界最高峰：珠穆朗玛峰珠穆朗玛峰 8844.43 米高米高How big is the Sahara?世界上最大的沙漠世界上最大的沙漠：撒哈拉沙漠撒哈拉沙漠 大约大约960万平方米万平方米Its about 9,600,000 squarekilometers in size.How deep is the Caspian Sea?It

5、s 1,025 meters deep.世界上最深的咸水湖世界上最深的咸水湖：里海里海 1025米深米深How long is the Nile?Its 6,671 kilometers long.世界上最长的河流世界上最长的河流：尼罗河尼罗河 6671千米长千米长How high is Qomolangma?Its 8,844.43 meters high.世界最高峰世界最高峰：珠穆朗玛峰珠穆朗玛峰 8844.43 米高米高How big is the Sahara?世界上最大的沙漠世界上最大的沙漠：撒哈拉沙漠撒哈拉沙漠 大约大约960万平方米万平方米Its about 9,600,000

6、squarekilometers in size.How deep is the Caspian Sea?Its 1,025 meters deep.世界上最深的咸水湖世界上最深的咸水湖：里海里海 1025米深米深How long is the Nile?Its 6,671 kilometers long.世界上最长的河流世界上最长的河流：尼罗河尼罗河 6671千米长千米长How high is Qomolangma?Its 8,844.43 meters high.世界最高峰世界最高峰：珠穆朗玛峰珠穆朗玛峰 8844.43 米高米高How big is the Sahara?世界上最大的沙漠

7、世界上最大的沙漠：撒哈拉沙漠撒哈拉沙漠 大约大约960万平方米万平方米Its about 9,600,000 squarekilometers in size.How deep is the Caspian Sea?Its 1,025 meters deep.世界上最深的咸水湖世界上最深的咸水湖：里海里海 1025米深米深How long is the Nile?Its 6,671 kilometers long.世界上最长的河流世界上最长的河流：尼罗河尼罗河 6671千米长千米长 8,844 meters high 8,844米高米高meters(kilometers)high/long/d

8、eep 米米(千米千米)高高/长长/深深 数字数字+单位单位(s)+形容词形容词e.g.100米长米长100 meters long3千米深千米深3 kilometers deep1.这张桌子两米长，一米宽。这张桌子两米长，一米宽。The table is _and _.2.这座山有这座山有1500米高。米高。The mountain is _.翻译翻译 two meters longone meter wide1,500 meters high3.这栋楼这栋楼120米高。米高。The building is _.4.这个湖这个湖1025米深。米深。The lake is _.翻译翻译 120

9、 meters tall1,025 meters deepWhat is the highest mountain in the world?Qomolangma.Its _ thanany other mountain in the world.世界最高峰世界最高峰：珠穆朗玛峰珠穆朗玛峰 higherany other+名词单数名词单数其他任何一个其他任何一个世界上最深的咸水湖世界上最深的咸水湖：里海里海 What is the deepest salt lake in the world?The Caspian Sea.Its _ thanany other salt lake in th

10、e world.deeper世界上最大的沙漠世界上最大的沙漠：撒哈拉沙漠撒哈拉沙漠What is the biggest desert in the world?The Sahara.Its much _ than any other dessert in the world.biggermuch+比较级比较级 得多得多世界上最长的河流世界上最长的河流：尼罗河尼罗河 What is the longest river in the world?The Nile.Its a lot _ thanany other river in the world.longera lot+比较级比较级 得多得

11、多Lets know about our own country-China让我们了解让我们了解自己的国家自己的国家中国中国China is one of the oldest countries in the world.It has a much longer history than the US.四大文明古国之一四大文明古国之一上下五千年上下五千年one of the+最高级最高级+复数复数 最最之一之一China has the biggest populationin the world.Its a lot biggerthan the population of the US.中

12、国中国:13.8亿亿美国美国:3.15亿亿What is the population of China?China is almost as big as the US,and it is the biggest country in Asia.9,600,000 平方千米平方千米9,372,600 平方千米平方千米as .as 像像.一样一样原级原级The Yangtze River is the third longest river in the world.Its also the first Asian river.The Yangtze River长江长江the+序数词序数词+最

13、高级最高级第第最最The Yellow River is the fifth longest river in the world.Its also the second longest river in China.The Yellow River黄河黄河2a Listen and number the facts(1-4)in the order you hear them.6,300 5,000 5,464 300_ The Yangtze River is about _ kilometers long and the Yellow River is _ kilometers long

14、._ 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,but it is the biggest country in Asia.42132b Listen again and fill in

15、 the blanks in 2a with the numbers in the box.6,300 5,000 5,464 300_ 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 population of the US.6,3005,464_ China is over _ years old.It has a mu

16、ch 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.5,0003001b 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 al

17、l the salt lakes.4.The Nile is _ river in the world.higherthe biggestthe deepestthe longest 形容词和副词的形容词和副词的比较等级比较等级原级原级比较级比较级最高级最高级1.原级原级:结构结构:as.as 与与.一样一样 not as/soas 不如不如.,不及不及.原级原级原级原级Tim is as tall as Tom.Tim和和Tom一样高。一样高。Tim不如不如Tom强壮。强壮。Tim is not as/so strong as Tom.2.比较级比较级(用于两者之间的比较用于两者之间的比较)

18、:结构结构:比较级比较级 than.长江比黄河更长。长江比黄河更长。The Yangtze River is longer than the Yellow River.2.比较级比较级(用于两者之间的比较用于两者之间的比较):much/a lot+比较级比较级 .得多得多Jack比比Lucy强壮得多。强壮得多。Jack is much/a lot strongerthan Lucy.3.最高级最高级(用于三者或三者以上的比较用于三者或三者以上的比较)形容词的最高级前必须加形容词的最高级前必须加the；副词的最高级前可省略副词的最高级前可省略the。Spring is the best seas

19、on in a year.Who sings(the)most beautifully of the three?3.最高级最高级(用于三者或三者以上的比较用于三者或三者以上的比较)结构结构1:the+最高级最高级of/in.中国是亚洲最大的国家。中国是亚洲最大的国家。China is the biggest countryin Asia.3.最高级最高级(用于三者或三者以上的比较用于三者或三者以上的比较):结构结构2:one of the+最高级复数最高级复数 最最之一之一中国是世界上最古老的国家之一。中国是世界上最古老的国家之一。China is one of the oldestcoun

20、tries in the world.3.最高级最高级(用于三者或三者以上的比较用于三者或三者以上的比较):结构结构3:the+序数词序数词+最高级最高级第第.最最.长江是世界上第三长的河流。长江是世界上第三长的河流。The Yangtze River is the third longest river in the world.完成高效完成高效P106第三大题第三大题Group discussion小组讨论学习小组讨论学习一、一、Say the answers (说答案说答案)二、二、Say the reasons (说原因说原因)完成高效完成高效P105第二大题第二大题1-6原级：原级：as as not as as=not so as比较级：比较级：much/a lot+比较级比较级最高级：最高级：one of the+最高级最高级+复数复数 the+序数词序数词+最高级最高级