八下unit7 section A 第一课时.ppt

Unit7Whatsthehighestmountainintheworld?,Qomolangma,SectionA1a2c,Guess,Wearegoingtotalkaboutgeographyandnaturewithnumbers,comparatives(比较级)andsuperlatives（最高级）.,higher,biggest,deepest,8844.43,9,600,000,longer,Testyourgeographicalfacts,1.Whatsthehighestmountainintheworld?2.Whatsthedeepestsaltlakeintheworld?3.Whatsthelongestriverintheworld?4.Whatsthebiggestdesertintheworld?,Qomolangma,TheCaspianSea,TheNile,TheSahara,珠穆朗玛峰,里海,尼罗河,撒哈拉沙漠,8,844.431,0256,6719,600,000,eightthousandeighthundredandforty-fourpointforty-three,onethousandandtwenty-five,sixthousandsixhundredandseventy-one,ninemillionsixhundredthousand,888,888,888,eighthundredandeighty-eightmillioneighthundredandeighty-eightthousandeighthundredandeighty-eight,8,844.431,0256,6719,600,000,Whichisthebiggest/smallestnumber?,1.isthenumber(ofall).,2.1,025issmallerthananyothernumber.,9,600,000,biggest,1,025,smallest,2.9,600,000isbiggerthananyothernumber.,E.gQomolangmais8,844.43metershigh.,数+单位+形容词/介词词组,Howhigh/long/deep.?,如何描述事物,1bListenandcompletethesentences.,1.Qomolangmais_thananyothermountainintheworld.2.TheSaharais_desertintheworld.3.TheCaspianSeais_ofallthesaltlakes.4.TheNileis_riverintheworld.,higher,thebiggest,thedeepest,thelongest,Differentwaystoexpressthesamemeaning,1.Qomolangmaishigherthananyothermountainintheworld.,2.Qomolangmaisthehighestmountainintheworld.,3.Qomolangmaisthehighestofallthemountains.,Moreaboutgeographicalwonders,InTibetanlanguage,Qomolangmameans“GoddesstheThird”.（藏语意为“大地之母”）Itiscoveredwithsnowallyearround.Itsthehighestpeakintheworld,soitisalsocalled“theThirdPoleoftheEarth”.（地球的第三极）,Qomolangma,TheNileisthelongestriverintheworld.Itsmorethan6,600kilometerslong.Itrunsthrough11countriesandrunsintotheMediterraneanSea(地中海)intheend.,TheNile,TheCaspianSea,TheCaspianSeaisalsothebiggestsaltlakeintheworld.Itis371,000squarekilometers.TheCaspianSeaissalty,about1/3asseawater.ItliesintheborderbetweenAsiaandEurope.,TheSaharaisinthenorthernAfrica,itisalsothehottestdesertintheworld.In1922,scientistsrecordedatemperatureof58.Thoughitshotthereduringtheday,itsometimesfreezes(结冰)atnight.,TheSahara,A:What/Whichisthehighestmountainintheworld?B:.isthehighestmountainintheworld.ishigherthananyothermountainintheworld.isthehighestofallmountainsintheworld.A:Howhighisit?B:Its.,Conversation(Pairwork),6,3005,0005,464300,6,300kilometers,5,464kilometers,1.HowlongistheYangtzeRiver/theYellowRiver?2.TheYangtzeRiveris_thantheYellowRiver.,Listening2a,longer,Whichtwocountriesaretheytalkingabout?,5,000,300,VS,Tips:.squarekilometersinsize.ismuchlongerthan.isthebiggest.,TheSahara,TheYellowRiver,TheCaspianSea,Qomolangma,TheNile,TheYangtzeRiver,Where