2023学年完整版八年级下册Unit7What'sthehighestmoun -

Unit7What’sthehighestmountainintheworld？SectionA（1a-1c）Step1:WarmingUpSituationLead-inT:Areyoutired?Doyouwanttotravelaroundtheworld?S:Yes.T:Beforewego,youshouldlearnsomethingaboutgeography.Step2:PresentationT:Doyouknowthesequestions?What’sthehighestmountainintheworld？What’sthelongestriverintheworld?What’sthedeepestsaltlakeintheworld?What’sthebiggestdesertintheworld?S:Qomolangmaisthehighestmountainintheworld.TheNileisthelongestriverintheworld.TheCaspianSeaisthedeepestsaltlakeintheworld.TheSaharaisthebiggestdesertintheworld.(Teachstudentstoreadthenewwordswhilethestudentsareanswering:Qomolangma,Nile,Caspian,Sahara,desert.)Step3:Practice1.T:Doyouknowmoreabouttheseplaces?Herearesomefactsaboutthem.Teachstudentstoreadthedifficultwordswhilestudentsarelookingthroughthefacts:square,kilometer,meter,size,deep.)T:Nowlet’sguessandmatch.(Asksomestudentstoshowtheiranswersafterthematchedthefacts.)2.T:Doyouknowhowtoreadthesenumbers?Let’slearnhowtoreadthem.英语中大数字的读法：①从左到右，每3个数字一组，其后分别读。billion(十亿),million（百万）,thousand（千）②每组数字的百位和十位之间加and。3.Invitesomestudentstoreadthenumbers.Thenallthestudentsreadtogether.4.T:Now,canyoureadthefacts?S:Qomolangmais8,844.43metershigh.TheNileis6,671kilometerslong.TheCaspianSeais1,025metersdeep.TheSaharaisabout9,600,000squarekilometersinsize.5.Thistime,pleaseanswermyquestions.HowhighisQomolangma?HowlongistheNile?HowdeepistheCaspianSea?HowwideistheSahara?Step4:ConsolidationT:Youdidverygoodjob!Nowlookat1b,let’sgetmorepractice.1.Listenandfillintheblanks.Pleasepayattentiontotheseimportantwordsincolor.2.Invitesomestudentstowritetheiranswerontheblackboard,thencheck.3.T:Lookat1b,thinkabouthowmanywayswecanusetodescribethesuperlative.（1）形容词最高级：主+谓+the+adj.最高级+（范围）.（2）形容词比较级表最高级：①主+谓+adj.比较级+than+anyother+n.(单数).②主+谓+adj.比较级+than+theother+n.(复数).4.T:Let’scheckifyoureallyunderstandit.Step5:Summary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。常见句型：---Whatisthehighestmountainin