Unit1OurLivingPlanetWeletotheunitReading课件高中英语译林版（2020）选修第一册

B8U1OurlivingplanetWelcometotheunitWhatarethecommonlyrecognizedsevennaturalwondersoftheworldDiscussionMountEverest(locatedalongChina-Nepalborder)ParicutinVolcano(帕里库汀火山，inMexico)theGrandCanyon(intheUnitedSates)VictoriaFalls(alongtheborderbetweenZambiaandZimbabwe)TheHarborofRiodeJaneiro(里约热内卢港，inBrazil)GreatBarrierReef(inAustralia)NorthernLights(北极光，seeninseveralcountriessuchastheUSA,Canada,etc.)MountEverest(locatedalongChina-Nepalborder)ParicutinVolcano(inMexico)theGrandCanyon(intheUnitedSates)VictoriaFalls(alongtheborderbetweenZambiaandZimbabwe)TheHarborofRiodeJaneiro(inBrazil)GreatBarrierReef(inAustralia)NorthernLightsmovementsmineralsAustraliaLookatthepicturesandtellwhatyouknowaboutthem.ZhangyeUNESCOGlobalGeopark

张掖世界地质公园Location:inZhangyeUNESCOGlobalGeopark,ChinaFeatures:multicolouredfoldsofrocksCauses:whicharecausedby

oftheEarth’splatesandcarvedbywindsandrain.movementsPamukkaleinTurkey

土耳其棉花堡Location:Pamukkale,TurkeyFeatures:the“cottoncandy”landscape,awaterfulofrockCauses:resultingfrom

leftbyflowingwater.mineralsLakeHillier希利尔湖Location:LakeHiller,

.Features:thesoftpinkofitsstillwatersCauses:whichisbelievedtobecausedbyamicroorganism.AustriliaInallthingsofnaturethereissomethingofthemarvellous.-Aristotle自然界包罗万象，蕴藏着奇妙之处。——亚里士多德B8U1OurlivingplanetReadingTheoceanisfullofmagicandmystery.WhatdoyouknowabouttheworldbeneaththeoceanTheoceancoversaround71%ofthesurfaceofourplanet.Onlyasmallpercentageoftheoceanbelowthesurfacehasbeenexploredandcharted.However,thepartsthatwehave

exploredcontaininterestingfinds.Wehavefoundthe

bluewhale,whichisthelargest

known

livinganimalontheEarth.Wehavealsofounda65,000-kilometre-long

mountainrangebeneaththeocean,whichistheworld’slongest.Therearealsomanyspectacularunderwatervolcanoes.Theoceanwasdividedintodifferentzonesbasedondepthfromthesurfaceforeaseofstudies.Whatarethedifferentzones200metersTheopenocean/Sunlightzone(透光区)Sunlightrarelypenetrates(穿透)beyondthiszone.Twilightzone(暮光区)Sunlightdecreasesrapidlywithdepth.

Thedeepocean(深海区)Sunlightdoesnotpenetrateatall.Wouldyoudivetotheoceanbottomifyouhadthechance?Whyorwhynot?Nowlet'sreadadocumentarytranscripttolearnmoreabouttheamazingworldbeneaththeocean.atextdocumentthatthevideofileanditsoralcontentareconvertedintoReadandfinishthetasksasquicklyaspossible.Task1Muchoftheknownmarinelifelivesintheopenocean,andsmallfilterfeedersandhuntersliveinthetwilightzone.ThedeepoceanishometothestrangestcreaturesontheEarth.Shrimpsandotherorganismslivearound

hydrothermalvents,andtheMarianaTrenchcanbefoundontheoceanfloor.Morewondersbeneaththesurfaceoftheoceanawaitus.P4A1Task2Trueorfalse.1.Thefirst100metresofourdivetakesusthroughwhatcanbecalledtheopenocean.T/F

2.Sinkingabove200metres,weenterthetwilightzone,wherethereislittlesunlightandthusnoplantlife.T/F

3.Oncepast1,000metres,wehavereachedthedeepocean,wherethereisnolightandtemperaturesdropjustbelowfreezing.T/F4.Inthedeepocean,somefishhavebothmaleandfemaleorganstoincreasethechancesofreproduction.T/F5.TheChallengerDeep,isnearly11,000metresbelowsealevel.

T/F200belowabovealmostTask3Para.11.Whatpercentageoftheworld’soceanshaveweexploredWhy2.WhydoestheauthormentionexploringspaceP4A2-11.Whatpercentageoftheworld’soceanshaveweexploredWhy

Lessthan20%.Humanbeingshaveapassionforexploringthedeepestpointundertheocean.However,theconditionsareextreme.Thepressuresarehugeandthereisnolight.Someunusualcreaturesalsolivethere.Moreover,advancedtechnologiesneedtoberesearchedanddevelopedtohelpusexploretheoceanmoreeffectively.Possibleanswer:2.WhydoestheauthormentionexploringspaceBecausetheauthorwantstoemphasizethattheoceanshouldbeexploredandiswellworthexploringjustlikedeepspace.Weknowmoreaboutouterspacethantheocean.Theoceanisfullofmysteries,waitingtobesolved.Para.21.Whatdosmallfilterfeedersdoatnight2.Howdoyouunderstandthelastsentence“Evolution,itseems,helpsboththehunterandthehuntedinequalmeasure!”Theyswimuptofeedinthenutrient-richwatersabove.Thesentenceemphasizesthefunctionofevolution.Ithelpsthehunterevolveuniquecharacteristics,whichcanallowthemtocatchthepreymoreeasily.However,italsohelpsthepreyevolvesurvivalcharacteristicsandgetawayfromthehunter.Possibleanswer:P4A2-2Para.3HowdoblindcreaturesinthedeepoceanmanagetosurviveTheydependonothersensessuchassmellandtheirabilitytodetectslightchangesinwaterpressuretoobtainfoodandavoidbeingcaught.Possibleanswer:P4A2-3Para.41.Whathaschangedscientificopinionaboutthechancesoftherebeinglifeelsewhereintheuniverse2.WhydoestheauthormentionMountQomolangmawhendescribingtheChallengerDeepTheknowledgethatlifecanexistintheextremeconditionsontheoceanfloor.Possibleanswer:TheauthorwantstohighlighthowdeeptheChallengerDeepis.Bycomparingittothehighestmountainintheworld,MountQomolangma,theauthorhelpsthereadervisualizeitsdepth.P4A2-4P4A3-1ZonesDepthsEnvironmentLifeformsorgeologicalformationsTheopenoceanThetwilightzone

Littlesunlight●Almostnoplantlife●Smallfilterfeeders●______________________Thedeepocean●Nolight●___________________________●Hugepressures●Blind,strangeorganisms,andsomehavingmaleandfemaleorgans●Shrimpsandotherorganisms

●Task4Completethefollowingtable.1,000metrestotheoceanfloorHunterswithtelescopic,upward-pointingeyesandbackward-curvingteeth0to200metresMostvisiblelight200metresto1,000metresMuchoftheknownmarinelifeTemperaturesjustabovefreezingHydrothermalvents,theMarianaTrenchandrockbridgesCheckyouranswers:Writeasummaryofthetranscriptinnomorethan100wordsaccordingtothetable.Theoceanmainlyconsistsofthreedifferentzones.Thefirst200metresjustbelowtheoceansurfacecanbecalledtheopenocean,wheremuchoftheknownmarinelifelivesandmostvisiblelightexists.Thetwilightzoneisbelow200metres,wherewithlittlesunlight,thereisalmostnoplantlife,andsmallfilterfeedersandhunterslive.Past1,000metres,wehavereachedthedeepocean,wheremanystrangecreaturescanbefoundlivinginthisextremeenvironment.Onreachingtheoceanfloor,wemayseeshrimpsandotherorganismsaroundhydrothermalvents.ThefamousMarianaTrenchcanbefoundinthiszone.Possibleanswer:Task5Thinkandshare.Attheendofthefirstparagraph,aquestionisasked,andattheendofthelastparagraph,anotherquestionisasked.Whatistheauthor’spurposeofwritinginthiswayPara.1Para.5Thefirstparagraphaimstoattractthereadertothetopicofdeep-seaexplorationbyaskingthequestion:“Thenwhydon’twedivetothebottomofareallydeepoceanandtakealong,closelookbeneaththewaves”Thelastparagraphservesasaconclusion.Afterdescribingtheoceandeep,theauthorgivesanendingtothisdocumentarytranscript.Byaskingthequestion:“...whoknowswhatwondersstillawaitusinthefuture”,theauthorremindsthereaderthattheexplorationoftheunknownpartoftheoceanwillnevercometoanend.Possibleanswer:Task6Learnaboutthewritingtechniqueofdescribingsomethinginspatialorder.Thedocumentarytranscriptdescribestheoceaninthesurface-to-bottomorder,whichmakesitscontentmoreorganizedandeasiertofollow.Findtheexpressionsindicatingthechangesinposition.P5B2analysing,mindmap,summary,retellingAnalysethefeaturesofthedocumentarytranscript.IntroductionConclusionMainbody1.averyclearstructure2.Organisedinspatial(空间的)order(fromsurfacetobottom)3.narratedinthefirstperson(fromtheperspectiveofahost)4.

applysomequestionsand

exclamatorysentences(感叹句)LanguagepointsLanguagepointsPara11.thevastnessofspaceL22.advanceourundersatnding...L2-33.itisestimatedthat...L44.remainunshakeableL3-45.unusualgeologicalformationsL66.divetothebottomoftheoceanL7太空的浩瀚无垠增进对宇宙的了解据估算仍然不动摇不寻常的地质构造潜到海底LanguagepointsPara2-3

1.inequalmeasureL182.relysolelyontheireyesighttosurviveL223.evolvefascinatingsurvivalcharacteristicsL234.detectslightchangesinwaterpressureL255.avoidbeingcaughtL24察觉水压的细微变化仅依靠视觉生存进化出神奇的生存特征在同样程度上避免被捕获Para.4-51.on/upondoingL302.itisthoughtthat...L324.belocatedinL375.beknownasL386.far(adj.)fromL41一…（就…）人们认为位于作为……被知道远非aswellasinadditiontosb/sth;too

除……之外；也；还①

Heplaysclassicalmusic,aswellaspopandjazz.②

Theysellbooksaswellasnewspapers.

1.So,ifwewanttofindexcitingnewlifeformsaswellasundiscoveredandunusualgeologicalformations,theoceaniswhereweshouldalsobelooking.where引导的表语从句if引导的条件状语从句他演奏流行音乐和爵士乐，同时也演奏古典音乐。他们既卖报也卖书。所以，如果我们想要发现令人兴奋的新生命形式，以及未被发现的和不寻常的地质构造，海洋也是我们应该关注的地方。

Sentenceanalysingforbetterunderstanding.Para1Difficultsentences2.Thefirst200metresofourdivetakesusthroughwhat

canbecalledtheopenocean,wheremostvisiblelightexists.(Para.2)我们下潜的头200米带我们穿过所谓的透光区，这里有大部分可见光。visibleadj.可见的，明显的整句类型为__________，其中，__________引导through之后的__________，并在从句中作__________，__________引导____________________，并在从句中作__________，先行词是____________________。whatwhere宾语从句主语主从复合句非限制性定语从句状语theopenoceanPara2Difficultsentences3.Sinkingbelow200metres,weenterthetwilightzone,wherethereislittlesunlightandthusalmostnoplantlife.(Para.2)下潜到200米以下，我们进入暮光区，这里没有阳光，因此几乎没有植物。整句类型为__________，__________引导____________________，并在从句中作__________，先行词是____________________。主从复合句非限制性定语从句where状语thetwilightzonePara2Difficultsentences4.Alsolivinginthetwilightzonearehunterswithtelescopic,upward-pointingeyesthatcaneasilyspotamealinthewatersabove.①

Standingbythelakewas

amiddle-agedman,whoseemedtobeafarmer.②

Seatedatthecentreoftheclassroomwas

Lily,whowaspractisingChinesecalligraphy.

莉莉坐在教室中央，正在练习中国书法。主语一位看起来像农民的中年人站在湖边。主语hunters后面有较长的修饰语，为了使句子更为平衡，将谓语部分的动词-ing形式置于句首，形成倒装句。同样生活在暮光区的还有双眼凸起向上的猎食者，它们能轻易地发现上面水域中的食物。谓语完全倒装句定语从句修饰主语Para2Difficultsentences

5.Consequently,thefishmostlikelytobeeatenhaveevolvedtohavethinbodiessothattheyarelesseasilyseenfrombelow.(Para.2)结果，最有可能被吃掉的鱼已经进化成细长的身体，从下面不太容易看见它们。整句类型为__________，__________引导____________________，另外，mostlikelytobeeaten是形容词短语作后置定语，修饰__________。主从复合句状语从句sothatthefishconsequentlyadv.结果，所以belikelytodosth.

有可能做某事Para2Difficultsentences6. Also,somefishhavebothmaleandfemaleorganstoincreasethechancesofreproduction,asfisharesoscarceatthesedepthsthatitcanbedifficultforthemtofindamate.此外，一些鱼类同时拥有雄性和雌性器官，以增加繁殖的机会，因为在这样的深度鱼类稀少，以至于它们很难找到配偶。结果状语从句原因状语从句Para3Difficultsentences不定式作目的状语7.Ofthemanystrangegeologicalformationstobefoundhere/are/rockbridgeswhichcrosstheTrench,somereachingaheightof2,500metresabovetheChallengerDeep.(Para.4)整句类型为__________。__________引导_______________，先行词是______________。主从复合句限制性定语从句which该句是__________，句子主语是_______________。倒装句rockbridgesrockbridgesPara4Difficultsentences7.Ofthemanystrangegeologicalformationstobefoundhere/are/rockbridgeswhichcrosstheTrench,somereachingaheightof2,500metresabovetheChallengerDeep.(Para.4)在这里发现的许多奇怪的地质构造中有横穿海沟的石桥，有些高度达到“挑战者深渊”上方2500米。“somereachingaheightof2,500metresabovetheChallengerDeep”为独立主格结构，相当于状语，基本形式为“逻辑主语+doing/done/形容词短语/副词短语/介词短语”，即正常的主谓结构去掉be动词，该逻辑主语与主句主语不一致，试比较：①He

spendingmuchtimeplayingcomputergames,hisperformance

becameworse.②Spendingmuchtimepalyingcompoutergames,he

performedworse.花了太多时间玩电脑游戏，他表现变差了。Para4Difficultsentences8.Onourjourneydown,wehavebeenfascinatedby

incrediblegeologicalformationsaswellasunexpectedlifeformsthathavebecomestangelyadaptedtotheirextremeenvironment.(Para.5)befascinatedby被……吸引/迷住incredible

adj.不可思议的，难以置信的aswellas

以及（AaswellasB作主语，谓语动词单复数根据A定）adapt(oneself)tosth.适应在我们下潜的旅途中，不可思议的地质构造，还有已经出奇地适应了极端环境的、出乎意料的生物，令我们心驰神往。整句类型为__________，_____引导_______________，在从句中作________，不能省略，先行词是__________________。that主从复合句lifeforms限制性定语从句主语Para5Difficultsentences9.Withsomuchoftheoceanslefttoexplore,whoknowswhatwondersstillawaitusinthefuture.(Para.5)整句类型为__________。__________引导know之后的__________。主从复合句宾语从句what“Withsomuchoftheoceanslefttoexplore”是with的复合结构之“withsth.done”，leave+n.+todo表示让……处于某种状态。海洋还剩下这么多的地方要被探索，谁知道未来还有什么奇迹等着我们呢？Para5Difficultsentences1.Whataretheadvantagesofexploringtheocean?Possibleanswer:Theocean’smanyuniquelifeforms,habitatsandgeologicalformationsnotonlyhelpusbetterunderstandlife,butalsoopenupvariousopportunitiesfornewdiscoveriesandinnovativeso