初中英语人教版八年级下册unit7-Section-A(1a-2c).ppt

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1、Whats the highest mountain in the world?Section A 1a-2cUnit 7 The No.2 Middle school of Ma Yueping Who has the best eyesight视视力？力？highestlongestheaviestdeepest(深的）深的）oldestmore beautifulbiggestlargestsmallestthe most carefulbetterearlier 1.会听和读四个较复杂的地名：会听和读四个较复杂的地名：Qomolangma The Nile The Caspian Se

2、a The Sahara2.会读和记住会读和记住:短语：短语：square kilometer,in size,salt lake;名词：名词：meter,desert;形容词：形容词：deep,long,high；3.能听读较大的数字和度量的表达：能听读较大的数字和度量的表达：4.能用比较级或最高级与同学谈论能用比较级或最高级与同学谈论“世界之最世界之最”Aims Aims：学：学 习习 目目 标标复习旧知复习旧知 11、At school,Mr.Smith is as_(fat)as Mr.Green.2、I think China is much_(old)than the USA.3、

3、Who gets up_ of you all in your room,Tony?A.early B.earlier C.earliest D.the earlier4、Now,blogs(博客博客)are _ more popular than traditional diaries among young people.A.very B.more C.lots D.muchfatolderC 复习知识：复习知识：形容词和副词的原级标志词为形容词和副词的原级标志词为：as （形容词（形容词副词原形）副词原形）as 形容词和副词比较级的标志词为形容词和副词比较级的标志词为：两者人或物，两者人

4、或物，than,much,a little,a lot.（形容词或副（形容词或副词后加词后加er;词前加词前加more）形容词和副词最高级的标志词为形容词和副词最高级的标志词为：三或三者以上人或物，范围短语三或三者以上人或物，范围短语：（同类）：（同类）of,(不属不属于同类）于同类）in(词尾加词尾加 est;词前加词前加most)DCan you read them?48 554 4,321 9,543 23,345 34,666 43,233 67,321复习旧知复习旧知2 总结归纳总结归纳 1：多位基数词读法多位基数词读法389three hundred and eighty-nine

5、1）101999的的 三三 位位 数数 由由“百百 位位 数数 and+_.2)三位数以上的数，从个位往前数，每三位数加一个逗号，三位数以上的数，从个位往前数，每三位数加一个逗号，三位数以上的数，从个位往前数，每三位数加一个逗号，三位数以上的数，从个位往前数，每三位数加一个逗号，从后往前数的第一个逗号代表从后往前数的第一个逗号代表从后往前数的第一个逗号代表从后往前数的第一个逗号代表_,_,第二个逗第二个逗第二个逗第二个逗号代表号代表号代表号代表_,_,第三个逗号是第三个逗号是第三个逗号是第三个逗号是_，注意，注意，注意，注意这这这这几个词几个词几个词几个词不不不不能用能用能用能用复数形式复数形

6、式复数形式复数形式，后也，后也，后也，后也不不不不能加能加能加能加andand。2,648 two thousand,six hundred and forty-eight两位数（两位数（十位和个位数十位和个位数十位和个位数十位和个位数）thousandmillionbillionEight thousand eight hundredEight thousand eight hundred and forty-four and forty-four pointpoint four three four three mountainmountain（highhigh）自学新知自学新知1tumu

7、 l:mDo you know this place?The Sahara The Sahara 撒哈拉沙漠撒哈拉沙漠sh:rDo you know these places?The Caspian sea The Caspian sea 里海里海kspinDo you know these places?The Nile The Nile 尼罗河尼罗河nal 1a Match the facts you know.Qomolangma about 9,600,000 square kilometers in sizeThe Sahara1,025 meters deepThe Caspian

8、 Sea6,671 kilometers longThe Nile8,844.43 meters high 自学新知自学新知2 2i s根据例子小组讨论：根据例子小组讨论：如何用英语表示如何用英语表示“它有它有米长宽米长宽/高高/深深/厚厚”例：例：Qomolangma is 8,844.43 meters high.The Sahara is about 9,600,000 square kilometers in size.议一议议一议总结归纳二：总结归纳二：It is meters high(long,wide,deep,thick).数词数词+数量单位数量单位+表示长表示长/宽宽/高的

9、形容词或者高的形容词或者 in+表示长宽高后的名词。表示长宽高后的名词。()1.Qomolangma is the highest mountain in the world.()2.The Sahara is the biggest desert in the world.()3.The Caspian Sea is deepest lake in the world.()4.The Nile is the second longest river in the world.()5.The Pacific Ocean is the biggest ocean in the world.()6

10、.The Great Wall is the longest wall in the world.TFTTFTListen and complete the sentencesP49 1b1.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.higherthe biggestthe deepestthe lo

11、ngestthe highestA:What is the highest mountain in the world?B:QomolangmaA:How high is it?B:Its 8,844.43 meters high.biggest/deepest/longestbig/deep/long()1.China is the second biggest country in the world.()2.China is bigger than the US.()3.Yellow river is the longest river in China.()4.Tsinghua Uni

12、versity is the best in China.()5.Shanghai is the biggest city in China.()6.Xinjiang is bigger than any other province in size.TTFFTT_The Yangtz River is about _ kilometers long and the Yellow River is _ kilometers long._China has the biggest population in the world._China is over _ years old.The US

13、is not even _ years old._China is almost as big as the US.P50 2a&2bListen and number the facts1-4and fill in the blanks with the numbers.(2a,2b)6,300 5,000 5,464 30042136,3005,4645,000300have a big/small populationWhats the population ofChina is almost as big as the US.Its a lot bigger than the popu

14、lation of the US.China has the biggest population in the world.议一议议一议形容词和副词的三个等级：形容词和副词的三个等级：原级原级比较级比较级最高级最高级和和.一样一样结构：结构：as+adj./adv.原级原级+as 比比.更更结构：结构：adj./adv.的的比较级比较级+than 注意：程度副词修饰比较级，注意：程度副词修饰比较级，a lot,much，even.最最的的结构：结构：the+adj./adv.的最高级的最高级+of/in总结归纳三总结归纳三1.number(数量数量)+unit（数量单位）（数量单位）+adj

15、(long/high/deep/wide).2.比较级比较级than any other.one of the 最高级最高级+复数名词复数名词.the 序数词序数词+最高级最高级.3.have a big/small population Whats the population of Structure:Summary巩固新知巩固新知一、写出下列数字：一、写出下列数字：6,671 _ 9,600,000 _six thousand six hundred and seventy-one nine million six hundred thousand二、写出短二、写出短语语：20米米长长

16、10米米宽宽 15米深米深 150平方米平方米 20 meters long 20 meters long 10 meters wide10 meters wide15 meters deep15 meters deep150 square meters150 square meters巩固新知巩固新知三、用正确形式完成句子三、用正确形式完成句子1.The red pencil is _ than the green one.(short)2.The _ river in Asia is the Yangtze River.(long)3.One of the o_ countries in

17、the world is China.(old)4.Its _ desert in the world.(big)写出下列单词的比较级和最高级形式写出下列单词的比较级和最高级形式1.deep _ _ 2.long _ _ 3.high _ _ 4.big _ _ 5.nice _ _ 6.large _ _ 7.easy _ _ 8.good _ _9.beautiful _ _10.exciting _ _deeper deepestlonger longesthigher highestbigger biggestnicer nicestlarger largesteasier easie

18、stbetter bestmore beautiful most beautifulmore exciting most exciting请思考并总结：请思考并总结：形容词、副词的比较级和最高级的构形容词、副词的比较级和最高级的构成形式有哪些？（先独立思考，再小组讨论。）成形式有哪些？（先独立思考，再小组讨论。）The beautiful earth is our homeland,we should protect(保护)it.Homework1.Remember key words and sentences.2.Recite the key sentence.3Preview 2d in conversation_ meters high_ meters long_ meters deep8,844.436,6711,025_ square kilometers in size9,600,000Qomolangmathe Nilethe Caspian Seathe SaharaHow high/long/deep/big is.?