Unit4第一课时SectionA1a~1d课件人教版八年级英语下册

Unit4TheWondersofNature(新人教)英语八年级下册SectionA(OP-1a-1d)Learning

Objectives判断听力对话的场景和人物的身份，并理解对话的主题及谈到的自然奇观。听辨出描述不同“地理之最”的形容词最高级和大数字，在语境中巩固形容词最高级的用法，并熟悉大数字的表达法。模仿听力录音，与同伴就地理之最的话题开展对话，并尝试用大数字准确描述这些自然景观的面积、高度、深度等。丰富对世界地理的认知，利用跨学科知识助力英语学习。通过本课时学习，我能够：LookandShare1.Doyouknowthenameofthewaterfallinthephoto?Whereisit?

ItisVictoriaFalls.It’sontheZambeziRiverinsouthernAfrica.2.Whatdoyouthinkisspecialaboutit?Ithinkitislargeandwide.It’soneofthenaturalwondersintheworld.3.Whatothernaturalwondersdoyouknow?YangtzeRiver,theGreatWall,

MountQomolangma,......[zæmˈbi:zi][ˈnætʃrəlˈwʌndəz]Whatothernaturalwondersdoyouknow?Lead-inMountQomolangmaDeadSeaSaharaDesertYangtzeRiverGreatBarrierReefMarianaTrench[ˈtʃəʊməʊˌlɑːŋmə][səˈhɑːrə][ˈbæriəri:f][ˌmæriˈænə

trentʃ

]Whatisspecialabouteachplace?thehighestthelowestthelargestthethirdlongestthebiggestthedeepestMatchtheplaceswiththepictures.1aPre-listening____NileRiver____AngelFalls____MountQomolangma____Deadsea____SaharaDesert____MarianaTrenchFADCEBABCDEF[naɪl][ˈtʃəʊməʊˌlɑːŋmə][ˈeɪndʒl][səˈhɑːrə][ˌmæriˈænə

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]Whatisamazingabouteachplace?While-listening1bListentothegameshow.Completethedescriptionsoftheplaces.PlaceDescriptionMountQomolangmathe________________

intheworldSaharaDesertthe

intheworldDeadSeathe

onearthMarianaTrenchthe________________

intheoceanhighestmountainbiggestdesertlowestplacedeepestpointWhatdotheyhaveincommon?MountQomolangmaisthehighestmountainintheworld.the+

最高级+介词短语8,848.86[ˈtʃəʊməʊˌlɑːŋmə][səˈhɑːrə][ˌmæriˈænə

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]Let'slearnHowtoreadlargenumbers?4168,848.8611,0009,000,000416:8,848.86:11,000:9,000,000:fourhundredandsixteeneightthousand,eighthundredandforty-eightpointeightsixeleventhousandninemillion三位数及以内的数字直接按数字本身进行读写；三位数以上的数字从右往左，每三位用逗号分隔，形成分级单位：e.g.1,234,567,891.02百位和十位中间加and;小数点读作point,小数点后的数字逐个单独读出billionmillionthousandpointandzerotwoWhile-listening1cListenagain.Completethemeasurementswiththenumbersbelow.PlaceMeasurementMountQomolangma__________

metreshighSaharaDesertabout__________squarekilometresinsizeDeadSea__________

metresbelowsealevelMarianaTrenchabout

__________

metresdeep8,848.869,000,00041611,000km2平方千米海平面基数词+单位词+形容词（long,wide,high,deep等）

/介词短语（insize,belowsealevel等）Readandretellhighestmountainbiggestdesertlowestplacedeepestpoint8,848.869,000,00041611,000

MountQomolangmaisthehighestmountainintheworld.Itis8,848.86metreshigh.[ˈtʃəʊməʊˌlɑːŋmə][səˈhɑːrə][ˌmæriˈænə

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]fourhundredandsixteeneightthousand,eighthundredandforty-eightpointeightsixeleventhousandninemillionReadandlearnHost: Welcometoourgameshow!Today,it'sallaboutgeography.Answerasquicklyasyoucan!Questionone:Whatisthehighestmountainintheworld?FuXing: It'sMountQomolangma!Host: Correct!Howhighisit?LiuHongyu:Iknowthis—it's8,848.43metreshigh.Host: No,sorry.FuXing?FuXing: Isit8,848.86metres?Host: Yes!ButsomescientistssayQomolangmaisstillgrowingtaller!Now,namethebiggestdesertintheworld.FuXing: TheTaklimakanDesert?Host: Wrong!Ella?Ella: It'stheSaharaDesert.Host: Right!Now,howbigisit?Ella: It'sabout9,000,000squarekilometres.Host: That'sright!What'sthelowestplaceonearth?LiuHongyu:It'stheDeadSea!Host: Welldone!Itssurfaceis416metresbelowsealevel.Nowwhere'sthedeepestpointintheocean?FuXing: It'sintheMarianaTrench.Host: That'scorrect!Howdeepisit?FuXing: It'sabout11,000metresdeep.Host: Correct!AskaboutnaturalwondersAskaboutmeasurementGivefeedbackPost-listeningTalkabouttheplacesyouhavelearntabout.1dA:

Whatis____________intheworld/onearth/intheocean?B:It's_____________.A:Howhigh/deep/big/lowisit?B:It's__________high/deep/squarekilometres(insize)....It’stheDeadSea.What’sthelowestplaceonearth?Itssurfaceis416metresbelowsealevel.Howlowisit?Now,what’sthedeepestpointintheocean?......SummaryAskaboutnaturalwondersTalkaboutgeographyfactsGivefeedback(反馈)Whatisamazingaboutnature?•What’sthelowest/highest/biggest/deepestplaceintheworld/onearth?•Howlow/high/big/deepisit?•Where’s...?•It’s...•It’s...metres/kilometres(deep/high).It’s...squarekilometres(insize).•It’sin...•Correct!/Right!•No,sorry./Wrong.•That’sright/correct!•Welldone!/ThinkingWhydoyouthinkhumansaresoexcitedabout“thehighest”,“thedeepest”and“thebiggest”thingsinnature?Becausenatureissoamazing.Becausetheyshowthegreatpowerofnature.Becausepeopleenjoyexploringanddiscoveringnewthings.Becausehumanswanttolearnmoreabouttheworld.Exercise单词填空。1.TheGreatPyramidisagreat___________(奇观)oftheancientworld.2.Weneedtogettheexact____________(测量数据)oftheroombeforebuyingthecarpet.3.Thetemperaturetodayisfivedegrees___________(低于)zero.4.Thewater__________(水平面)inthelakeisrisingbecauseoftheheavyrain.5.The_________(表面)ofthemooniscoveredwithdustandrocks.6.MountQomolangmaisthe_________(high)mountainintheworld.7.TheSaharaisbyfarthe__________(large)hotdesertonEarth.8.What’sthe__________(deep)pointintheocean?—It’stheMarianaTrench.9.Scientistsusespecialtoolsforthe___________(measure)ofthetrench’sdepth.10.Welookedatthestarsand__________(wonder)ifthereislifeinspace.wondermeasurementbelowsurfacelevelhighestlargestdeepestmeasurementwonderedExercise“世界之最”填空。TheAmazonRainforestisoneofthe_______(large)tropicalrainforestsintheworld.

亚马孙雨林是世界上最大的热带雨林之一。TheNileRiveristhe_________(long)ri