.Step3.Practice.1.Lookthesephotosandpracticethedialogue:e.g.A:What‘sthehighestmountainintheworld?B:Qomolangma.A:HowhighisQomolangma?B:It’s8,844metershigh.2.Practiceinpairsusingtheinformationin1a.QomolangmaTheSaharaTheCaspianSeaTheNileabout9,600,000squarekilometersinsize1,025metersdeep6,671kilometerslong8,844.43metershighStep4.Explaination…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.Step5.SummaryandconsolidationLetstudentssaythekeypointsofthislesson.Thendosomeexercisestoconlidate.Step6.HomeworkMakethesentenceswiththekeywordsandsentencepattern.DesignoftheBlackboardUnit7What’sthehighestmountainintheworld?Section(1a-2c)A:What‘sthehighestmountainintheworld?B:Qomolangma.A:HowhighisQomolangma?B:It’s8,844metershigh.