Unit 4 Section A 1a -2d 课件（内嵌音视频） 2025-2026学年人教版英语八年级下册

TheWondersofNatureSectionAWhatisamazigaboutnature?1a--1dUNIT

4Talkaboutgeographyfactsaboutnaturalwonders.Learnnewwordsandphrases:wonder,desert,measurement,squarekilometre,below,sealevel,surface,depth,dive,unusual,bottom0102LearningAims1.Doyouknowthenameofthewaterfallinthephoto?2.Whatdoyouthinkisspecialaboutit?3.Whatothernaturalwondersdoyouknow?It’sVictoriaFalls.It’ssuperbigandwide.AngelFallsNileRiverSaharaDesert世界最长河流（约6650千米），流经11个非洲国家，孕育了古埃及文明，是非洲重要的水源与农业命脉。位于委内瑞拉，是世界最高的不间断自由落体瀑布，总高979米，主落差807米，藏于圭亚那高原雨林中。世界最大的热带沙漠，横跨北非11国，总面积约932万平方千米，地貌以沙丘、戈壁、绿洲为主，气候极端干旱。尼罗河安赫尔瀑布(天使瀑布)撒哈拉沙漠MountQomolangmaDeadSeaMarianaTrench位于西北太平洋，是全球最深的海沟，最深处挑战者深渊约10994米，是板块俯冲形成的深海洼地。位于以色列、约旦、巴勒斯坦交界处的内陆盐湖，湖面海拔约-430.5米（世界陆地最低点），盐度极高，人可轻松漂浮。喜马拉雅山脉主峰，世界海拔最高峰（8848.86米），位于中国与尼泊尔边境，山体呈金字塔状，终年积雪。珠穆朗玛峰死海马里亚纳海沟FADCEBhighestbiggestlowestdeepest8,848.869,000,00041611,000长、宽、高、深、面积的表达方法:基数词+单位词+形容词（long,wide,high,deep等）Trytoreadthefollowingnumbers.4168,848.8611,0009,000,000416→8,848.86→11,000→9,000,000→fourhundredandsixteeneightthousand,eighthundredandforty-eightpointeightsixeleventhousandninemillionHost:_________ourgameshow!Today,it'sallaboutgeography.Answerasquicklyasyoucan!Questionone:Whatisthe______________intheworld?FuXing:It'sMountQomolangma!Host:Correct!____________?LinHongyu:Iknowthis—it's8,848.43metreshigh.Host:No,sorry.FuXing?FuXing:Isit8,848.86metres?Host:Yes!ButsomescientistssayQomolangmaisstill___________!

Now,namethe___________intheworld.FuXing:TheTaklimakanDesert?Listenandfillintheblanks.WelcometohighestmountaingrowingtallerHowhighisitbiggestdesertHost:_______!Ella?Ella:It'stheSaharaDesert.Host:Right!Now,___________?Ella:It'sabout9,000,000squarekilometres.Host:That'sright!What'sthe___________onearth?LinHongyu:It'stheDeadSea!Host:Welldone!Itssurfaceis416metres______sealevel.Nowwhere'sthe____________intheocean?FuXing:It'sintheMarianaTrench.Host:That'scorrect!How_____isit?FuXing:It'sabout11,000metresdeep.Host:Correct!Listenandfillintheblanks.Wronghowbigisitlowestplacebelowdeepestpointdeep(deep/big/high)(highestmountain/biggestdesert)A:What’sthehighestmountainintheworld?B:It’sMountQomolangma.A:Howhighisit?B:It’s8,848.86metreshigh.1.尼罗河_____________________2.安赫尔瀑布_____________________2.珠穆朗玛峰________________________4.死海____________________5.撒哈拉沙漠_________________6.马里亚纳海沟__________________6.平方公里_____________________8.海平面以下___________________9.最低的地方_________________________________10.8,848.86_____________________________________________________11.在地球上、究竟___________12.尽可能快______________________完成下列短语和句子。NileRiverMountQomolangmaDeadSeaSaharaDesertMarianaTrencheightthousand,eighthundredandforty-eightpointeightsixthelowestplacebelowsealevelsquarekilometersonearthAngelFallsasfastaspossible1.TheGrandCanyonisoneofthegreatest__________(wonder)ofthenaturalworld.2.Theriverisabout200_________(metre)wide.3.Thismountainis________(high)thanthatone.4.What'sthe_________(deep)oftheswimmingpool?5.TheSaharaisthe_______________(large)desertintheworld.6.Weshouldlearntoprotectthe________(nature)world.用所给词的适当形式填空。wondersmetreshigherdeepest