Unit7SectionA1a-2d课件-人教版英语八年级下册

Unit7What'sthehighestmountainintheworld?SectionA11a—2dtheSaharaQomolangmatheCaspianSeatheNilesquaren.

平方metern.米deepadj.

深的desertn.

沙漠Asian.

亚洲tourv.n.旅行9,600,000ninemillionsixthousand1,025onethousandandtwentyfive6,671sixthousandsixhundredandseventyone8,844.43eightthousandeighthundredandfortyfourpointfortythree

It’smorethan6600kilometerslong.theNile

TheSaharaisthebiggestdesertintheworld.ItislocatedinthenorthernAfrica.Climateconditionsareverybad.Itisoneoftheearth’smostnotsuitableforbiologicalsurvivals.

theSaharaDoyouknowtheseplaces?Qomolangma

It’s8844.43metershightheCaspianSeaTheCaspianSeaisthebiggestlakeintheworld.ItliesintheborderbetweenAsiaandEurope.

TheYangtzeRiveristhethirdlongestriverintheworld,thefirstlongestAsianrivers.It’s6211.31kilometerslong.Itflowsthrough11provincesandrunsintotheEastSeainShanghaifinally.theYangtzeRiverWhichis

thehighest

mountainintheworld?Whichis

thelongest

riverinAsia?...…Talkaboutthesepicturesinpairs.1aMatchthefactsyouknow.Qomolangmaabout9,600,000squarekilometersinsizeTheSahara1,025metersdeepTheCaspianSea6,671kilometerslongTheNile8,844.43metershighPracticeinpairslikethis:A:Whichisthehighestmountainintheworld?

B:It’sQomolangma.PracticeA:Whatisthe…inthe…?B:…A:

HowhighisQomolangma?B:It’s8,844.43metershigh.A:Howdeep/big/longis…?B:It’s…meters/kilometers….1bListenandcompletethesentences.1.Qomolangmais______thananyothermountainintheworld.2.TheSaharais____________desertintheworld.3.TheCaspianSeais____________ofallthesaltlakes.4.TheNileis_________riverintheworld.higherthebiggestthedeepestthelongest1cUsetheinformationin1btomakeconversations.Whatisthehighestmountainintheworld?Qomolangma.Whatisthe…intheworld?….2aListenandnumberthefacts(1-4)intheorderyouhearthem.

___TheYangtzeRiverisabout____kilometerslongandtheYellowRiveris___kilometerslong.___Chinahasthebiggestpopulationintheworld.It’salotbiggerthanthepopulationoftheUS.___Chinaisover___yearsold.IthasamuchlongerhistorythantheUS.TheUSisnoteven___yearsold.___ChinaisalmostasbigastheUS,anditisthebiggestcountryinAsia.

42132bListenagainandfillintheblankswiththenumbersinthebox.

6,3005,0005,464300___TheYangtzeRiverisabout____kilometerslongandtheYellowRiveris______kilometerslong.___Chinahasthebiggestpopulationintheworld.It’salotbiggerthanthepopulationoftheUS.___Chinaisover_____yearsold.IthasamuchlongerhistorythantheUS.TheUSisnoteven____yearsold.___ChinaisalmostasbigastheUS,anditisthebiggestcountryinAsia.

42136,3005,4645,0003002cMakeconversationsusingtheinformationin2a.A:DidyouknowthatChinaisoneoftheoldestcountriesintheworld?B:Yes,Idid.It’smucholderthananycountry.PracticeA:DidyouknowthatYangtzeRiveristhelongestriverinChina?B:Yes,Idid.It’s6,300meterslong.B:Wow!That’slong!TheGreatWall

2dReadtheconversationandanswerthequestions:1.Whichisthebiggestman-madeobjectintheworld？2.WhichisthemostfamouspartoftheMingGreatWall?TheGreatWall