Unit7 Section A 1a-1c 课件-人教版八年级英语下册.pptx

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1、Unit 7Whats the highest mountain in the world?11,Whichisthehighestmountainintheworld?2.Whichisthelongestriverintheworld?3.WhichisthelongestriverinAsia?QomolangmaQomolangmatheNiletheNilethetheChangjiangRiverChangjiangRiverQomolangmarunsalongtheborderbetweenChinaandNepal.Itiscoveredwithsnowalltheyearr

2、ound.Its8844.43metershigh,thehighestintheworld.Whichisthehighestmountainintheworld?TheSaharaisthebiggestdesertintheworld.ItislocatedinthenorthernAfrica.Itsclimateconditionsareverybadandisoneoftheearthsmostunsuitableforbiologicalsurvival.Whichisthebiggestdesertintheworld?TheNileisthelongestriverinthe

3、world.Itsmorethan6,671kilometerslong.Itrunsthrough9countries.ItrunsintotheMediterraneanSea(地中海)intheend.Whichisthelongestriverintheworld?TheCaspianSea(里海)isthebiggestinlandlakeintheworld.ItliesintheborderbetweenAsiaandEurope.Whichisthebiggestinlandlakeintheworld?1.To learn new words:square,meter,dee

4、p,desert,2.To learn to talk about geography and nature(了解地理自然)3.To learn to read large numbers（大数字）4.To learn to compare facts（学会比较）1.Self-learn the new words on page 492.Have a check.squaremeterdeepdesertn.平方；正方形平方；正方形n.米；公尺米；公尺adj.深的；纵深的深的；纵深的n.沙漠沙漠1.1.复习复习11001100以内的所有数字。以内的所有数字。2.2.掌握百、千、万、十万、百万

5、的表达法。掌握百、千、万、十万、百万的表达法。1 1、1-191-19的基数词的基数词one1two2three3four4five5six6seven7eight8nine9ten102)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thousand,第二个逗号代表million,第三个逗号是billion，注意这几个词不能用复数形式，后也不能加and。例如：2,648twothousand,sixhundredandforty-eight16,250,064sixteenmillion,twohundredandfiftythousand,sixty-four

6、220hundred百thousand千million百万billion十亿100,076,600,1:1-12:(记住每个单词)2:13-19:-teen(thir-,fif-,eigh-)3:20-90:-ty(twen-,thir-,for-,fif-,eigh-)4:21-99:十位_个位5:100,200,.900:_ hundred 6:101-999:_ hundred and _个位十位_个位7:多位数:_ billion(十亿),_ million(百万),_ thousand,_ hundred and 个位十位_个位_1a Matchthefactsyouknow.Qom

7、olangma about9,600,000squarekilometersinsizeTheSahara1,025metersdeepTheCaspianSea6,671kilometerslongTheNile8,844.43metershigh1bListenandcompletethesentences.1.Qomolangmais_thananyothermountainintheworld.2.TheSaharais_desertintheworld.3.TheCaspianSeais_ofallthesaltlakes.4.TheNileis_riverintheworld.hi

8、gherthebiggestthedeepestthelongest听力原文听力原文“the+序数词序数词+最高级最高级+单单数名词数名词+in”表示表示“是是中的第几中的第几”“比较级比较级+thananyother+名词名词+其他其他”表示表示“比其他任何一个比其他任何一个都都”注：该结构可与注：该结构可与“the+最高级最高级+其他其他”相互转相互转换换形容词最高级结构形容词最高级结构:the+最高级最高级+其他其他Usetheinformationin1btomakeconversations.1cA:Whatisthehighestmountainintheworld?B:Qomol

9、angma.A:Howhighisit?B:Itis8844,43metershigh.The Sahara,9600000,big/in sizeThe Caspian Sea,1025,deepThe Nile,6671,fortable3.big4.happy5.cheap6.many7.difficult8.littlebetterbestmoremostbiggerbiggesthappierhappiestcheapercheapestmoremostmoremostlessleast一一写出下列单词的比较级和最高级写出下列单词的比较级和最高级1.Lilygetsup_(early

10、)thanLucy.2.Whichgoes_(slowly),TomorJim?3.Thisbookis_(interesting)thanthatone.earliermoreslowlymoreinteresting二二 根据所给词的适当形式填空根据所给词的适当形式填空4.Sheworks_(careful)inherschool.5.Whogoestobed_(late)Jim,TomorJack?6.Ithinkturkeyis_(delicious)ofall.themostcarefullylatestthemostdeliciousImprovetheskillsofSslistening.Bemasterofthewordsandtheusagesofnumbers.Practicewithyourclassmatestospeakandwritelargenumbers.Writesomenumbercardsandputtheminyourroom.Wheneveryousee,readthemquickly.