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1、Unit7What'sthehighestmountainintheworld?SectionA1a-2dLearingAims:TalkaboutgeographyandnatureReadnumbers.Eg:9,600,000Theusingofcomparativeandsuperlativedegree比较级和最高级应用大多数形容词有三个级。1.原级:Structure:as...as...像..….一样e.g.TimisastallasTom.2.比较级(用于两者之间的比较):Structure：形容词比较级＋than...e.g.Thisboxisbiggerthanthat
2、one.形容词和副词的比较级和最高级3.最高级(用于三者或三者以上的比较):Structure:the+形容词的最高级＋of/in...e.g.Tomistheheaviestinourclass. Heisthemostpopularinourschool.Let’sreadnumbers2.3451656,671600,0009,600,0001,300,000,000twopointthreeforty-fiveonehundredandsixty-fivesixthousandsixhundredandseventy-onesixhundredthousandninemillion
3、sixhundredthousandonebillionthreehundredmillionbillion十亿million百万thousand千Whichisthehighestmountainintheworld?Whichisthelongestriverintheworld?...…Talkaboutthesepicturesinpairs.Doyouknowtheseinterestplaces?QomolangmaQomolangmarunsalongtheborderbetweenChinaandNepal.Itiscoveredwithsnowalltheyearroun
4、d.It’s8844.43high,thehighestintheworld.It’s26kilometerslong.TheNileisthelongestriverintheworld.It’smorethan6600kilometerslong.Itrunsthrough9countries,it’soneofthelargestriverflowsthroughtheinternationalstatesintheworldandrunsintotheMediterraneanSea(地中海)intheend.TheNileTheCaspianSeaTheCaspianSeaist
5、hebiggestlakeintheworld.ItliesintheborderbetweenAsiaandEurope.TheSaharaisthebiggestdesertintheworld.ItislocatedinthenorthernAfrica,climateconditionsareverybad,isoneoftheearth'smostnotsuitableforbiologicalsurvival.TheSaharaTheYangtzeRiveristhethirdlongestriverintheworld,thefirstAsianrivers.It’s6211
6、.31kilometerslong.TheYangtzeRiverBasin,east-westwidthof3219kilometers,about966kilometerswidenorth-south,passingthrough11provinces.ItrunsintotheEastSeainShanghaifinally.TheYangtzeRiver1aMatchthefactsyouknow.Qomolangmaabout9,600,000squarekilometersinsizeTheSahara1,025metersdeepTheCaspianSea6,671kilo
7、meterslongTheNile8,844.43metershigh…8,844metershigh.…8,844米高…metershigh(long,wide…)……米高（长，宽……)。英语表示“有多长（宽，高……）”时，一般将数词和数量单位放在表示长宽高的形容词前作状语。e.g.Thewallis1.7metreswide.Explaination1bListenandcompletethesentences.1.
