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1、Unit7Unit7What'sthehighestmountainintheworld?SectionA11a—2dPresentationsquaren.平方metern.米deepadj.深的desertn.沙漠populationn.人口Asian.亚洲tourv.n.旅行touristn.旅行者walln.墙amazingadj.令人大为惊奇的ancientadj.古代的wideadj.宽的；宽阔的Howtoreadthenumbers642641,26414,4562,140,4560.424.642,140,456.64
2、从右往左，每满三个数字要加一个逗号第一个逗号，可记作thousand第二个逗号，可记作million小数点读作point小数点后的数字，按个位基数词依次读出Howtoreadthenumbers8,844.436,6711,0259,600,0006,3005,464Doyouknowtheseinterestingplaces?QomolangmaQomolangmarunsalongtheborderbetweenChinaandNepal(尼泊尔).Itiscoveredwithsnowalltheyearround.Howhi
3、ghisQomolangma?It’s8844.43metershigh.Itisthehighestintheworld.Height:8,844.43metersTheNile(尼罗河)runsthrough9countries,it’soneofthelargestriverflowsthroughtheinternationalstatesintheworldandrunsintotheMediterraneanSea(地中海)intheend.It’sthelongestriverintheworld.theNileHowl
4、ongistheNeil?It’s6,671kilometerslong.length:6,671kilometerstheCaspianSea里海TheCaspianSeaisthebiggestlakeintheworld.ItliesintheborderbetweenAsiaandEurope.HowdeepistheCaspianSea?It’s1,025metersdeep.depth:1,025metersTheSahara(撒哈拉沙漠)isthebiggestdesertintheworld.Itislocatedin
5、thenorthernAfrica.Climateconditionsareverybad.theSaharaHowbigistheShara?It’sabout9,600,000squarekilometersinsize.area:about9,600,000squarekilometersWhatisthehighestmountainintheworld?WhatisthelongestriverinAsia?...…Talkaboutthesepicturesinpairs.Talkaboutthesepicturesinp
6、airs.Whatisthehighestmountainintheworld?Qomolangma.HowhighisQomolangma?It’s8,844.43metershigh.Whatisthelongestriver/deepestlake/biggestdesertintheworld?…...Howlong/deep/bigis…?It’s…long/deep/insize.1aMatchthefactsyouknow.Qomolangmaabout9,600,000squarekilometersinsizeThe
7、Sahara1,025metersdeepTheCaspianSea6,671kilometerslongTheNile8,844.43metershighPracticeinpairslikethis:A:Whatisthe…inthe…?B:…Practice…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.Explain
8、ationA:HowhighisQomolangma?B:It’s8,844metershigh.PracticeThebiggestdesertintheworldisabout8,000,000squarekilom
