Unit4SectionA（1a1d）（教学课件）八年级英语下册教学课件（新教材人教版）

SectionA1a-1dUnit4TheWondersofNatureLearningAims语言能力文化意识思维品质学习能力掌握climber、determined等登山相关核心词汇及扫读策略，能提取文本关键信息、进行简单口语讨论。学会运用扫读、合作探究等学习方法，提升自主学习与互助交流能力，养成良好阅读习惯。通过梳理文本脉络、分析探险精神，培养逻辑归纳与深度思考能力。了解中国登山队攀登珠峰的壮举，增强民族自豪感，树立敬畏自然、勇于探索的理念。Let’senjoysomenaturalwondersoftheworld.Doyouknowthenameofthewaterfallinthephoto?Whatdoyouthinkisspecialaboutit?Whatothernaturalwondersdoyouknow?LookandshareThewaterfallinthephotoisVictoriaFalls.Itisoneofthelargestwaterfallsintheworld.MountQomolangma,HuangguoshuWaterfall,TheGrandCanyon...AngelFallsNileRiverMountQomolangmaSaharaDesertDeadSeaMarianaTrenchMatchtheplaceswiththepictures.____NileRiver____AngelFalls____MountQomolangma____DeadSea____SaharaDesert____MarianaTrenchEFADCB1aListentotheconversationandthinkaboutthequestionsbelow.1.WhatisthelatestmeasuredheightofMountQomolangma?A.8,848.43metres B.8,848.86metresC.8,844.43metres D.8,844.86metres2.HowlargeistheSaharaDesertinsize?A.About900,000squarekilometres B.About9,000,000squarekilometresC.About90,000,000squarekilometres D.About900,000,000squarekilometres3.HowdeepistheMarianaTrench?A.About416metres B.About8,848.86metresC.About11,000metres D.About9,000,000metresHost:Welcometoourgameshow!Today,it'sallaboutgeography.Answerasquicklyasyoucan!Questionone:Whatisthe__________mountainintheworld?FuXing:It'sMountQomolangma!Host:Correct!Howhighisit?LiuHongyu:Iknowthis—it's____________metreshigh.Host:No,sorry.FuXing?FuXing:Itis_____________metres!Host:Yeah!ButsomescientistssayQomolangmaisstillgrowing_________Now,namethe__________desertintheworld.FuXing:TheTaklimakanDesert?Host:Wrong!Ella?Ella:It'stheSaharaDesert.Host:Right!Now,howbigisit?Ella:

It'sabout____________squarekilometres.Host:That'sright!What'sthe__________placeonearth?LiuHongyu:It'stheDeadSea!Host:Welldone!Itssurfaceis__________metresbelowsealevel.Nowwhere'sthe__________pointintheocean?FuXing:It'sintheMarianaTrench.Host:That'scorrect!Howdeepisit?FuXing:It'sabout_____________metresdeep.Host:Correct!8,848.438,848.869,000,00011,000tallerhighestbiggestlowestdeepest416ListentotheconversationagainandfillintheblanksListentothegameshow.Completethedescriptionsoftheplaces.PlaceDescriptionMeasurementMountQomolangmathe_______________intheworld___________metershighSaharaDesertthe______________intheworldabout___________squarekilometersinsizeDeadSeathe_____________onearth___________metersbelowsealevelMarianaTrenchthe_____________intheoceanabout___________metersdeephighestmountainbiggestdesertlowestplacedeepestpoint1b4168,848.8611,0009,000,000Doyouknowhowtoreadthefollowingnumbers?416:fourhundredandsixteen8,848.86:eightthousand,eighthundredandforty-eightpointeightsix11,000:eleventhousand9,000,000:ninemillionListenagain.Completethemeasurementsin1bwiththenumbersbelow.4168,848.8611,0009,000,000PlaceDescriptionMeasurementMountQomolangmathe_______________intheworld___________metershighSaharaDesertthe______________intheworldabout___________squarekilometersinsizeDeadSeathe_____________onearth___________metersbelowsealevelMarianaTrenchthe_____________intheoceanabout___________metersdeephighestmountainbiggestdesertlowestplacedeepestpoint8,848.869,000,00041611,0001c平方千米低于海平面measurement:n.数量；测量Comprehensioncheck.

1.MountQomolangmaisthehighestmountain.2.Itis8,848.43metreshigh.3.TheSaharaDesertisthebiggestdesert.4.TheDeadSeais416metresabovesealevel.5.TheMarianaTrenchisabout11,000metresdeep.TFTFTHost: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.Listenandrepeat.Thenrole-playtheconversation.世界上最高的山是哪座？它有多高？说出世界上最大的沙漠。塔克拉玛干沙漠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!地球上最低的地方是哪里？海洋中最深的地方在哪里？Talkabouttheplacesyouhavelearntabout.1dWorkwithyourpartnerandtalkaboutthefollowingquestions.Whatisthelargestislandonearth?WhatisthelongestriverinChina?Whatisthebiggest/smallestcountryintheworld?Whatisthedeepesttrenchintheocean?WhatisthebiggestdesertinAfrica?What'sthehighestmountainintheworld?What'sthebiggestdesertintheworld?What'sthelowestplaceonearth?Where'sthedeepestpointintheocean?Howhighisit?Howbigisit?Howlowisit?Howdeepisit?It'sMountQomolangma.It'stheSaharaDesert.It'stheDeadSea.ItisintheMarianaTrench.Itisabout8,848.86metreshigh.Itisabout9,000,000squarekilometresinsize.Itssurfaceis416metresbelowsealevel.Itisabout11,000metresdeep.Language

pointsPoint1about9,000,000squarekilometresinsize.

面积约900万平方千米

。①squaremetre/mile

平方米/英里②square[名词]广场；正方形我们的工厂占地5平方千米。Ourfactorycoversanareaoffive___________________.squarekilometres

请在纸上画一个正方形。Pleasedraw__________onthepaper.asquarePoint2Whatothernaturalwondersdoyouknow?

wonder/ˈwʌndə(r)/n.奇观；惊叹v.琢磨；想知道；感到诧异

高频1.n.[C]奇观；奇迹

TheGrandCanyonisoneofthenaturalwondersoftheworld.

科罗拉多大峡谷是世界自然奇观之一。TheGreatWallisoneofthewondersoftheworld.

长城是世界奇观之一。2.wonder还可以作不可数名词，意为“惊讶；疑惑”Thechildrenlookedatthemagicianinwonder.

孩子们惊奇地看着魔术师。2.v.琢磨；想知道（相当于wanttoknow）Ifyoustudyphysics,youwonderwhylighttravelsfasterthansound.

如果你学习物理，你会想知道为什么光比声音传播速度快。Shewonderswhyhedidn’tcallheryesterday.

她疑惑他昨天为什么没给她打电话。Iwonderwhattimethetrainwillarrive.我想知道火车什么时候到。3.v.感到诧异Iwonderedatherbeautifulsinging.

她优美的歌声让我惊讶。4.nowonder：难怪；不足为奇inwonder 惊奇地You’vebeenstudyingallday—nowonderyou’retired.

你一整天都在学习，难怪会累。1.ThepyramidsinEgyptareoneofthemostfamous___________(wonder)oftheancientworld.2.I_________(wonder)ifyoucouldhelpmesolvethismathproblem.Welookedatthebeautifulsunsetin__________(wonder).3.He____________(wonder)whytheskyturnedredjustnow.wonderswonderwonderwonderedPoint3Itssurfaceis416metresbelowsealevel.below作介词时，强调“位置、数值、等级等处于另一事物的下方或更低水平”，但不一定是在正下方（对应的反义词为above）。under表示在某物的正下方belowsealevel

意为“低于海平面”e.g.TheDeadSeaisoneofthefewplacesonEarththatisbelowsealevel.（死海是地球上少数几个低于海平面的地方之一。）

level/ˈlevl/n.高度；水平；程度

高度sealevel海平面TheDeadSeaisoneofthefewplacesonEarththatisbelowsealevel.（死海是地球上少数几个低于海平面的地方之一。）

水平；程度

常与介词of连用。

ahigh/lowlevel

高/低水平Aslongaswekeepworking,wewillachievehigherlevels.

只要我们继续努力，我们会达到更高的水平。below

作介词，意为“在……下面；低于；少于”。There

is

a

beautiful

garden

below

our

window.在我们窗户下面有一个漂亮的花园。Thesunsankbelowthehorizon.

太阳落到了地平线以下。Hisscoreonthetestwasbelow60.

他这次考试的分数低于60分。Theriverbelowthebridgeisveryclear.（桥下面的那条河很清澈。）Point4英文数字读写规则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，依次为千(thousand)、百万(milion)、十亿(biion)等。读百位及以内的数字时，通常会在百位和十位之间加一个and;但在千位和百万位之间、百万位和十亿位之间不需要加and。小数点后无论有多少位数，中间都不插入逗号。小数点读作point，其后各位数字(包括0)需要逐个读出。Point5形容词/副词最高级变化规则big—biggestfat—fattestthin—thinnest重读闭音节词词尾只有一个辅音字母时，先双写该辅音字母，再加-estbeautiful—mostbeautifulinteresting—mostinterestingdelicious—mostdelicious多音节词和部分双音节词在词前加most不规则变化原级最高级good/wellbestbad/badlyworstmany/muchmostlittleleastfarfarthestfurthestWhatisthehighestmountainintheworld?Whatisthebiggestdesertintheworld?Whatis

thelowestplaceonEarth?Whereisthedeepestpointintheocean?形容词最高级用法构成：单音节词：high→highest,big→biggest,low→lowest,deep→deepest多音节词：interesting→themostinteresting规则：最高级前必须加the：thehighestmountain,thebiggestdesert常与表示范围的短语连用：intheworld,onEarth,intheoceanPoint6about

11.000

metres

deep

深约11000米关于长、宽、高、深的表达：(1)

基数词+单位词+形容词

(long,

wide,tall,

high,

deep等)10metreslong

10米长

15meterswide

15米宽

200metresdeep

200米深(2)

基数词+单位词+in+名词

(lengthwidth,

height,

depth

等)10metresinlength

10米长

15metersinwidth

15米宽200metresindepth

200米深高度：It’s8.848.86metreshigh.面积：It’sabout9,000,000squarekilometresinsize.低于海平面：It’s416metresbelowsealevel.深度：It’sabout11,000metresdeep.(3)

对长、宽、高等提问用疑问词how。How

long/high/wide...?

……多长/高/宽？Howwideisthisriver?这条河有多宽？HowlongistheGreatWallofChina?中国的长城有多长？物体长、宽、高、深等的表达法基数词+单位词+形容词（long、wide、high、deep等）基数词+单位词+in+名词（length、width、height、depth等）Point7Deepestdiveofawhale鲸鱼下潜的最大深度①

dive/daɪv/v.&n.潜水；跳水；俯冲②

[不及物动词]潜水；跳水；俯冲

divedown

潜入；下潜；俯冲

diveinto

跳入；跳进③

[名词]潜水；跳水；俯冲

那个男人跳入河中去救溺水的小孩。Theman_____________therivertosavethedrowningchild.divedinto

他做了个漂亮的跳水动作。Hemade_____________________.abeautifuldiveExercises单项选择一、单项选择1.Howdoyoureadthenumber“8,848.86”inEnglish?

_______

A.Eightthousandeighthundredandforty-eightpointeightsix.B.Eightthousandseighthundredforty-eightpointeighty-six.C.Eightthousandandeighthundredforty-eightpointeightsix.2.TheDeadSeaisabout430meters_______sealevel.A.underB.belowC.downAB3.—_______istheNileRiver?—It’sabout6,650kilometerslong.A.HowmuchB.HowdeepC.howlong4.TheYangtzeRiverisoneof_______riversinAsia.A.longB.longerC.longestD.thelongestAD二、根据括号内提示完成句子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.wondermeasurementbelowsurfa