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

Whatsthehighestmountainintheworld?,SectionA1a-2c,Unit7,TheNo.2MiddleschoolofMaYueping,Whohasthebesteyesight视力？,highest,longest,heaviest,deepest(深的）,oldest,morebeautiful,biggest,largest,smallest,themostcareful,better,earlier,1.会听和读四个较复杂的地名：QomolangmaTheNileTheCaspianSeaTheSahara2.会读和记住:短语：squarekilometer,insize,saltlake;名词：meter,desert;形容词：deep,long,high；3.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“世界之最”,Aims：学习目标,复习旧知1,1、Atschool,Mr.Smithisas_(fat)asMr.Green.2、IthinkChinaismuch_(old)thantheUSA.3、Whogetsup_ofyouallinyourroom,Tony?A.earlyB.earlierC.earliestD.theearlier4、Now,blogs(博客)are_morepopularthantraditionaldiariesamongyoungpeople.veryB.moreC.lotsD.much,fat,older,C,复习知识：形容词和副词的原级标志词为：as（形容词副词原形）as形容词和副词比较级的标志词为：两者人或物，than,much,alittle,alot.（形容词或副词后加er;词前加more）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：（同类）of,(不属于同类）in(词尾加est;词前加most),D,Canyoureadthem?5544,3219,54323,34534,66643,23367,321,复习旧知2,5,6,3,2,9,4,5,2,1,1,Howtoreadlargenumber,总结归纳1：多位基数词读法,389,threehundredandeighty-nine,1）101999的三位数由“百位数and+_.,2)三位数以上的数，从个位往前数，每三位数加一个逗号，从后往前数的第一个逗号代表_,第二个逗号代表_,第三个逗号是_，注意这几个词不能用复数形式，后也不能加and。2,648twothousand,sixhundredandforty-eight,两位数（十位和个位数）,thousand,million,billion,6,671,8,844.43,9,600,000,1,025,letmetry,自学新知1,8,844.43kilometershigh,tumul:m,Doyouknowthisplace?,TheSahara撒哈拉沙漠,big-(insize)-squarekilometer,9,600,000squarekilometersinsize,sh:r,Doyouknowtheseplaces?,TheCaspiansea里海,deep,1,025metersdeep,kspin,Doyouknowtheseplaces?,TheNile尼罗河,long-(kilometer),6,671kilometerslong,nal,Goodjob!,CheckWords,1aMatchthefactsyouknow.,自学新知2,is,根据例子小组讨论：如何用英语表示“它有米长宽/高/深/厚”例：Qomolangmais8,844.43metershigh.TheSaharaisabout9,600,000squarekilometersinsize.,议一议,总结归纳二：Itismetershigh(long,wide,deep,thick).数词+数量单位+表示长/宽/高的形容词或者in+表示长宽高后的名词。,()1.Qomolangmaisthehighestmountainintheworld.()2.TheSaharaisthebiggestdesertintheworld.()3.TheCaspianSeaisdeepestlakeintheworld.()4.TheNileisthesecondlongestriverintheworld.()5.ThePacificOceanisthebiggestoceanintheworld.()6.TheGreatWallisthelongestwallintheworld.,T,F,T,T,F,T,Listenandcompletethesentences,P491b,Qomolangmais_thananyothermountainintheworld.TheSaharais_desertintheworld.TheCaspianSeais_ofallthesaltlakes.TheNileis_riverintheworld.,higher,thebiggest,thedeepest,thelongest,thehighest,A:Whatisthehighestmountainintheworld?B:QomolangmaA:Howhighisit?B:Its8,844.43metershigh.,biggest/deepest/longest,big/deep/long,Pair-work,()1.Chinaisthesecondbiggestcountryintheworld.()2.ChinaisbiggerthantheUS.()3.YellowriveristhelongestriverinChina.()4.TsinghuaUniversityisthebestinChina.()5.ShanghaiisthebiggestcityinChina.()6.Xinjiangisbiggerthananyotherprovinceinsize.,T,T,F,F,T,T,_TheYangtzRiverisabout_kilometerslongandtheYellowRiveris_kilometerslong._Chinahasthebiggestpopulationintheworld._Chinaisover_yearsold.TheUSisnoteven_yearsold._ChinaisalmostasbigastheUS.,P502a&2b,Listenandnumberthefacts1-4andfillintheblankswiththenumbers.(2a,2b),4,2,1,3,6,300,5,464,5,000,300,haveabig/smallpopulation,Whatsthepopulationof,ChinaisalmostasbigastheUS.,ItsalotbiggerthanthepopulationoftheUS.,Chinahasthebiggestpopulationintheworld.,议一议,形容词和副词的三个等级：,原级,比较级,最高级,比.更结构：adj./adv.的比较级+than注意：程度副词修饰比较级，alot,much，even.,总结归纳三,1.number(数量)+unit（数量单位）+adj(long/high/deep/wide).2.比较级thananyother.oneofthe最高级+复数名词.the序数词+最高级.3.haveabig/smallpopulationWhatsthepopulationof,Structure:,Summary,巩固新知,一、写出下列数字：,6,671_9,600,000_,sixthousandsixhundredandseventy-one,ninemillionsixhundredthousand,二、写出短语：20米长10米宽15米深150平方米,20meterslong10meterswide15metersdeep150squaremeters,巩固新知,三、用正确形式完成句子,1.Theredpencilis_thanthegreenone.(short)2.The_riverinAsiaistheYangtzeRiver.(long)3.Oneoftheo_countriesintheworldisChina.(old)4.Its_desertintheworld.(big),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_,deeperdeepest,longerlongest,higherhighest,biggerbiggest,nicernicest,largerlargest,easiereasiest,betterbest,morebeautifulmostbeautiful,moreexcitingmostexciting,请思考并总结：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。）,Thebeautifulearthisourhomeland,weshouldprotect(保护)it.,Homework,1.Rememberkeywordsandsentences.,2.Rec