Unit4SectionA1a1d课件人教版八年级英语下册

PresentationUnit4

TheWondersofNatureSectionAWhatisamazingaboutnature(1a-1d)PresentationLookandpredictTitlePicture+Whatdoyouthinkthisunitwilltalkabout?TheWondersofNaturePresentationDiscussandsaylearnaboutnatureusenaturewiselyrespectnatureprotectnatureenjoynature...connectwithnatureDiscuss:Howdoweconnectwithnature?Inthisunit,youwill：

1.talkaboutgeographyfactsaboutnatural

wonders.

谈论有关自然奇观的地理事实。2.comparefactsaboutfamousplaces.

对比著名景点的相关信息。3.sharegeographyfactsusinglargenumbers.

使用大数字来分享地理事实。4.explorehowandwhypeopleconnectwithnature.

探讨人类与自然如何建立联系，以及为何会产生这种

联系。Readthesewords.wondern.奇观；惊叹

v.琢磨；想知道measurementn.数量；测量squarekilometre平方干米belowprep.在......下面；低于

adv.在(或到)......下面leveln.高度；水平；程度surfacen.表面；表层NileRiver尼罗河AngelFalls天使瀑布MountQomolangma珠穆朗玛峰DeadSea死海SaharaDesert撒哈拉沙漠MarianaTrench马里亚纳海沟尼罗河在非洲，是世界最长河流，长约6670千米，滋养沿岸土地，被称为非洲“母亲河”。Nile/naɪl/river尼罗河在委内瑞拉，是世界最高瀑布，落差979米，藏身热带雨林，水流从高山直坠而下，景色壮观。AngelFalls安赫尔瀑布/ˈeɪn.dʒəlfɔːlz/位于中尼边境，是世界最高峰，海拔8848.86米，山体巍峨，被称为“世界第三极”。MountQomolangma(珠穆朗玛峰)/maʊntˈtʃəʊ.mə.lɑːŋ.mə/位于非洲北部，是世界最大沙漠，面积约900万平方公里，气候干旱，以广袤沙丘为特色SaharaDesert（撒哈拉沙漠）/səˈhɑːrə

ˈdezət/死海位于西亚，是世界陆地最低点（-416米），湖水盐度极高，无生物生存，人可漂浮于湖面。DeadSea(死海)位于西太平洋，是世界最深海沟，最深处约11000米，海底环境极端，藏有独特海洋生物。MarianaTrench马里亚纳海沟/ˌmeriˈænətrentʃ/____NileRiver____AngelFalls____MountQomolangma____Deadsea____SaharaDesert____MarianaTrenchFADCEB马里亚纳海沟安赫尔瀑布尼罗河BECFDAWhat’samazingabouteachplace?课本P321aMatchtheplaceswiththepictures.珠穆朗玛峰死海撒哈拉沙漠Naturalwonders

自然奇观Howcanwereadlargenumbers?2506112375①先从右至左数,每三位

数加一个逗号.(先忽略

小数点及后面部分),,,②第一个逗号代表thousand(千),

第二个逗号代表million(百万),

第三个逗号代表billion(十亿).thousand千million百万billion十亿twobillion,fivehundredandsixmillion,onehundredandtwelvethousand,threehundredandseventy-five,.53③point+小数

点后逐个读point点pointfivethree416三位数读法four

hundred

and

sixteenfive

hundred

and

nine509三位数：百位数字+hundred+and+十位和个位(十位若是0，直接读个位）_______hundredand

个位十位___个位__8,848.86四位数读法thousandeight

hundred

and

forty-eightpoint(点)eightsix小数部分逐个读出数字读法：eightthousand,eighthundredandforty-eightpointeightsix四位数：千位数+thousand+后面三位数（小数部分逐个读出数字）___thousand,___hundredand个位十位___个位__五位数读法11,000eleventhousand259,613twohundredandfifty-ninethousand,sixhundredand

thirteen六位数读法9,000,000ninemillion七位数读法million(百万)thousand

第一个逗号代表thousand(千)

第二个逗号代表million(百万)PresentationLookandreadCanyoureadthesenumbers?

百百万

千十亿twobillion,sixty-fivemillion,sixhundredand

ninethousand,ninehundredand

eightypointthreefour.点

billionmillionthousandhundredpoint2,065,609,980.34billionmillionthousandpointthreefourand大数字读法：从右往左，三位一截；每截都按三位数读；截完加单位：billion(十亿)/thousand（千）/million(百万),；and用在百十间Presentation8,848.86eightthousand,eighthundredandforty-eightpointeightsix41611,0009,000,000fourhundredandsixteeneleventhousandninemillionLookandreadListentothegameshow.Completethedescriptionsoftheplaces.PlaceDescriptionMountQomolangmathe_______________intheworldSaharaDesertthe_______________intheworldDeadSeathe_______________onearthMarianaTrenchthe_______________intheocean听力技巧：听主旨，抓描述性最高级词汇（highest,largest...）highestmountainbiggestdesertlowestplacedeepestpointWhile-listening1bPresentation1cListenagain.Completethemeasurementsin1bwiththenumbersbelow.Listenandcomplete4168,848.8611,0009,000,000PlaceMeasurementMountQomolangma________metreshighSaharaDesertabout_________squarekilometresinsizeDeadSea________metresbelowsealevelMarianaTrenchabout________metresdeep/'meʒəmənt/n.数量；测量8,848.869,000,00041611,000Tip:精听，边听边记录关键数据，用逗号三位一隔PresentationReadandfillReadtheconversationandfillintheblanks.Host:Welcometoourgameshow!Today,it'sallabout

.Answer

!Questionone:Whatisthe

mountainintheworld?FuXing:It'sMountQomolangma!Host:Correct!isit?LiuHongyu:Iknowthis—it's8,848.43metreshigh.Host:No,sorry.FuXing?FuXing:Isit8,848.86metres?Host:Yes!ButsomescientistssayQomolangmaisstill

taller!Now,namethebiggest

intheworld.FuXing:TheTaklimakanDesert?Host:Wrong!Ella?Ella:It'stheSaharaDesert.Host:Right!Now,isit?Ella:It'sabout9,000,000

.Host:That'sright!What'sthe

placeonearth?LiuHongyu:It'stheDeadSea!Host:Welldone!Its

is416metresbelow

.Nowwhere'sthedeepestpointintheocean?FuXing:It'sintheMarianaTrench.Host:That'scorrect!isit?FuXing:It'sabout11,000metresdeep.Host:Correct!geographyasquicklyasyoucanhighestHowhighgrowingdeserthowbigsquarekilometreslowestsurfacesealevelHowdeep地理尽可能快地最高的有多高生长/增高

沙漠

有多大

平方千米

最低的

表面

海平面

有多深Language

points1.about9,000,000squarekilometresinsize.

面积约900万平方千米

。①squaremetre/mile

平方米/英里②square[名词]广场；正方形2.TheWondersofNature自然奇观

1）wonder

n.奇观；惊叹

（可数）

/v.琢磨；想知道(相当于wanttoknow)；感到诧异

2）.nowonder：难怪；不足为奇

3）inwonder 惊奇地Languagepoints3.

长、宽、高、深、面积的表达方法物体长、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）练习：Thebuildingisabout200metreshigh.（改为同义句）→Thebuildingisabout200metres______________.【拓展延伸】作定语时用合成词“数词-单位词单数–形容词”。This20-meter-longropeisn’tlongenoughtohelpclimbthemountain.inheight4.416metresbelowsealevel低于海平面416米（3）【副词】在下面；低于不强调垂直的“下面

e.g.Fromthetopofthemountain,Icouldseethevillagebelow.

从山顶上我可以看到下面的村庄。below表示在某物的下方，但不一定是在正下方，反义词是aboveWritetheanswersbeloweachquestion.把答案写在每个问题的下面。under表示在某物的正下方，反义词是overThefarmerisstandingunderthetree.那个农民正站在树下。辨析：below与under两者都表示“在……下面”。区别如下：5.416metresbelowsealevel

低于海平面416米（1）【名词】高度

搭配：sealevel海平面

e.g.Themountainisover3,000metresabovesealevel.

这座山海拔3000多米。（2）【名词】水平；程度

常与介词of连用。ahigh/lowlevel高/低水平

e.g.Aslongaswekeepworking,wewillachievehigherlevels.

只要我们继续努力，我们会达到更高的水平。(河北中考)练习：TheDeadSeaisthe________(low)placeontheEarth,sitting430meters________sealevel.lowestbelow6.B:Itssurfaceis…metresbelowsealevel.它的表面低于海平面....米。

surface

n.

表面；表层

当指“水面”或“液面”时，常用单数形式。

e.g.Nearly10%oftheearth’ssurfaceiscoveredbyice.

地球表面将近10%被冰覆盖。拓展：onthesurface表面上；从外表看；乍一看

e.g.Onthesurface,itseemstobemyfault.表面上看，这似乎是我的过错。练习：地震是地球表面的突然震动。A(n)earthquakeisasuddenshakingoftheearth’s__________.surfacePresentation7.长、宽、高、深、面积的表达方法Theriveris20meterswide.=Theriveris20metersinwidth.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,size等）【拓展延伸】作定语时用合成词“数词-单位词单数–形容词”。This20-meter-longropeisn’tlongenoughtohelpclimbthemountain.Presentation1dLookandtalkTalkabouttheplacesyouhavelearntabout.Usefulexpressions:主语+谓语(+the)+最高级+in/of/among短语.A:What’sthelowestplaceonearth?B:It’s...A:Howlowisit?B:Itssurfaceis...metresbelowsealevel.A:Now,what’s...n.

表面；表层

1dTalkabouttheplacesyouhavelearntabout.It's...What'sthelowestplaceonearth?Itssurfaceis...metresbelowsealevel.Howlowisit?Now,what's...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.PresentationSummarizethewondersofnature.thewondersofnatureMountQomolangmathehighestSaharaDesertthebiggestDeadSeathelowestMarianaTrenchthedeepestNileRiverAngelFallsMountQpmolangmaDeadSeaSaharaDesertMarianaTrench8,848.86米高11,000米深9,000,000平方千米大小低于/高于海平面尽你所能快做得好!在....的表面尼罗河安赫尔瀑布珠穆朗玛峰死海撒哈拉沙漠马里亚纳海沟8,848.86meterhigh/inheight11,000meterdeep/indepth9,000,000squarekilometresinsizebelow/