Unit+1+Reading+The+ocean+deep课件【高效备课精研+知识精讲提升】 高中英语牛津译林版（2020）选修第一册+

Theoceandeeppayattentiontothefigures/numbersTheoceanisfullofmagicandmystery.Whatdoyouknowabouttheworldbeneaththeocean?Theoceancoversaround

ofthesurfaceofourplanet.Yet

isstillunexplored.takeauniquejourneytoexploremore.Theoceanishometoover

species,whichistheworld’slargesthabitat.Theoceangivesusaround

ouroxygen.70%240,00090%50%

Takeauniquejourneytoexploremore.ReadingforthestructureIntroductionPara1MainbodyParas2-4MainbodyParas2-4ConclusionPara5Readingfordetails(Para1)Whydoestheauthormentiontheexplorationofthespace?Welookupwardsandwonderwhatliesbeyondourplanet.Wesendprobesintothevastnesofspacetoexploretheunknown.Webuildspacestationstoadvanceourunderstandingoftheuniverse.Ourcuriosityaboutouterspacehasremainedunshakeable.Meanwhile,itisestimatedthatmorethaneightypercentoftheworld'soceansareunexplored.So,ifwewanttofindexcitingnewlifeformsaswellasundiscoveredandunusualgeologicalformations,theoceaniswhereweshouldalsobelooking.Thenwhydon'twedivetothebottomofareallydeepoceanandtakealong,closelookbeneaththewaves?Mainidea:Weshouldexploretheworld_____________theoceanfor________________and_____________________________.Readingfordetails(Para1)Whydoestheauthormentiontheexplorationofthespace?Readingfordetails(Para1)Welookupwardsandwonderwhatliesbeyondourplanet.Wesendprobhevastnessofspacetoexploretheunknown.Webuildspacestationstoadvanceourunderstandingoftheuniverse.Ourcuriosityaboutouterspacehasremainedunshakeable.Theoceanshouldbeexploredandiswellworthexploringjustlikeouterspace.Theoceanisfullofmysteries,waitingtobesolvedAnalogyitreferstoacomparsionbetweentwothingsthataresimilarinsomeway,oftenusedtoexplainsomethingunfamiliar.Meanwhile,itisestimatedthatmorethaneightypercentoftheworld'soceansareunexplored.So,ifwewanttofindexcitingnewlifeformsaswellasundiscoveredandunusualgeologicalformations,theoceaniswhereweshouldalsobelooking.Thenwhydon'twedivetothebottomofareallydeepoceanandtakealong,closelookbeneaththewaves?Readingfordetails(Para1)Mainidea:Weshouldexploretheworld_____________theoceanfor________________and_____________________________.

beneath

unusualgeologicalformations.

newlifeformsReadingfordetails(Paras2)Thefirst200metresofourdivetakesusthroughwhatcanbecalledtheopenocean,wheremostvisiblelightexists.Herelivesmuchofthemarinelifeweknowabout,suchasdolphins,coralsandseaweeds.Sinkingbelow200metres,weenterthetwilightzone,wherethereislittlesunlightandthusalmostnoplantlife.Mostofthefishlivingherearesmallfilterfeederswhichswimupatnighttofeedinthenutrient-richwatersabove.Alsolivinginthetwilightzonearehunterswithtelescopic,upward-pointingeyesthatcaneasilyspotamealinthewatersabove.NamesDepthsConditionsLifeforms/GeologicalformationsTheopenoceanthefirst_____metres_______lightmuchofthemarinelifesuchas__________________________The__________below200metres_____sunlight

No

______life,small_________________,

hunterswith___________________eyes200twilightzonevisiblelittledolphins,coralsandseaweedsplantfilterfeederstelescopic,upward-pointingReadingfordetails(Paras2)Consequently,thefishmostlikelytobeeatenhaveevolvedtohavethinbodiessothattheyarelesseasilyseenfrombelow.However,oncetheyarecaptured,thehunters'backward-curvingteethpreventthemfromgettingaway.

Evolution,itseems,helpsboththehunterandthehuntedinequalmeasure!

Howdoyouunderstandthelastsentence?Ithelpsthehunterevolveuniquecharacteristics,whichcanallowthem.Meanwhile,italsohelpsthepreyevolvesurvivalcharacteristicsand.tocatchthepreymoreeasilygetawayfromthehunterbackward-curvingandsharpteeththinbodytoavoidbeingseenandeatenMainidea:Muchofthe_______marinelifelivesinthe_____________,and_____________________and_________livein

the______________.

openoceantwilightzoneknownsmallfilterfeedershuntersReadingfordetails(Paras3)Oncepast1,000metres,wehavereachedthedeepocean,wherethereisnolightandtemperaturedropjustabovefreezingThepressuresarehugeandcanbemorethan100timesthepressureoftheEarh'satmophere.Itisthensurprsingthatmanycreaturescanliveinthisextremeenvironment.Theycannotrelysolelyontheireyesighttosurviveandhaveevolvedfascinatingsurvivalcharacteristics.Indeed,manyorganismsinthedeepoceanareblind.Inordertoobtainfoodandavoidbeingcaught,theyhavetodependonothersensessuchassmellandtheirabilitytodetectslightchangesinwaterpressure.Also,somefishhavebothmaleandfemaleorganstoincreasethechancesorreproduction,asfisharesoscarceatthesedepthsthatitcanbedifficultforthemtofindamate.ThefishinthedeepoceanareamongthestrangestcreaturesontheEarth,manyofwhichhaveyettobeproperlystudied.Thedeepoceanpast____metres______light,above______temperatures,______pressure__________organisms,fishhavingboth_______________organsMainidea:The__________ishometothe__________creaturesontheEarth.deepoceanstrangestReadingfordetails(Paras3)Oncepast1,000metres,wehavereachedthedeepocean,wherethereisnolightandtemperaturedropjustabovefreezingThepressuresarehugeandcanbemorethan100timesthepressureoftheEarh'satmophere.Itisthensurprsingthatmanycreaturescanliveinthisextremeenvironment.Theycannotrelysolelyontheireyesighttosurviveandhaveevolvedfascinatingsurvivalcharacteristics.Indeed,manyorganismsinthedeepoceanareblind.Inordertoobtainfoodandavoidbeingcaught,theyhavetodependonothersensessuchassmellandtheirabilitytodetectslightchangesinwaterpressure.Also,somefishhavebothmaleandfemaleorganstoincreasethechancesorreproduction,asfisharesoscarceatthesedepthsthatitcanbedifficultforthemtofindamate.ThefishinthedeepoceanareamongthestrangestcreaturesontheEarth,manyofwhichhaveyettobeproperlystudied.Thedeepoceanpast____metres______light,above______temperatures,______pressure__________organisms,fishhavingboth_______________organs1000nofreezinghugeblindmaleandfemalehavebothmaleandfemaleorgansblindabilitytodetectReadingfordetails(Para4)Onreachingtheoceanfloor,wemayseeshrimpsandotherorganismsaroundhydrothermalvents.Theseventsforminvolcanicallyactiveareas,pouringmineral-richfluidsintothesea.Beforethediscoveryofthesecreatures,itwasthoughtthatalllifeontheEarthobtaineditsenergyfromthesun.However,thisdiscoveryhasrevealedthatlifeformscanobtainnutrientsandenergyfromthermalsources.Knowingthatlifecanexistintheseextremeconditionshaschangedscientificopinionaboutthechancesoftherebeinglifeelsewhereintheuniverse.Theoceanfloorthedeepestpoint---nearly_______

metresbelowsealevel___________conditions________________________________

11,000extremeshrimps,remarkableorganisms,vents,rockbridgesWhathaschangedscientificopinionaboutthechancesoftherebeinglifeelsewhereintheuniverse?

Readingfordetails(Para4)Inadditiontotheventsandremarkableorganisms,wecannotmisstheMarianaTrench,locatedinthenorth-westernpartofthePacificOcean.Itsdeepestpoint,knownastheChallengerDeep,isnearly11,000metresbelowsealevel.YoucouldplaceMounQomolangmaintheChallengerDeep,anditstopwouldstillbemorethan2,000metresbelowthesurface!Whilethereislittlelifeatsuchgreatdepths,itisfarfromboring.OfthemanystrangegeologicalformationstobefoundherearerockbridgeswhichcrosstheTrench,somereachingaheightof2,500metresabovetheChallengerDeep.WhydoestheauthormentionMountQomolangmawhendescribingtheChallengerDeep?Mainidea:___________________live

around______________,andthe___________canbefoundon______________.Mainidea:______________________________live

around______________,andthe_____________canbefoundon______________.

Readingfordetails(Para4)WhydoestheauthormentionMountQomolangmawhendescribingtheChallengerDeep?TheauthorwantstohighlighthowdeeptheChallengerDeepis.Bycomparingittothehighestmountainintheworld,MountQomolangma,theauthorhelpsthereadervisualizeitsdepth.hydrothermalvents

MarianaTrench

theoceanfloor

ShrimpsandotherorganismsReadingfordetails(Paras2-4)MajorzonesoftheoceanNamesDepthsConditionsLifeforms/GeologicalformationsTheopenoceanthefirst_____metres_______lightmuchofthemarinelifesuchas__________________________The__________below200metres_____sunlight

No

______life,small_________________,

hunterswith___________________eyesThedeepoceanpast____metres______light,above______temperatures,______pressure__________organisms,fishhavingboth_______________organsTheoceanfloorthedeepestpoint---nearly_______

metresbelowsealevel___________conditions________________________________

200visibledolphins,coralsandseaweedstwilightzonelittleplanttelescopic,upward-pointingfilterfeeders1000nofreezinghugeblindmaleandfemale11,000extremeshrimps,remarkableorganisms,vents,rockbridgesReadingfordetails(Para5)Asyoucansee,theworldbeneaththesurfaceoftheoceanisindeedanamazingplace.Onourjourneydown,wehavebeenfascinatedbyincrediblegeologicalformationsaswellasunexpectedlifeformsthathavebecomestrangelyadaptedtotheirextremeenvironment.Withsomuchoftheoceanslefttoexplore,whoknowswhatwondersstillawaitusinthefuture?Howisparagraph5relatedtoparagraph1?

Echo

arhetoricalquestionMorewondersbeneaththesurfaceoftheocean

us.awaitReadforstructureReadthedocumentarytranscriptandcompletethechartbelowPara.3: Para.2: Para.4: Para.5: Para.1:Weshouldexploretheworldbeneaththeoceanfornewlifeformsandunusualgeologicalformations.IntroductionMainbodyConclusionMuchoftheknownmarinelifelivesinthe

,

andsmallfilter

feedersandhuntersliveinthe

.The

ishometothestrangestcreaturesontheEarth.Shrimpsandotherorganismslivearound

,andthe

canbefoundontheoceanfloor.Morewondersbeneaththesurfaceoftheocean

us.

openoceantwilightzonedeepoceanhydrothermalventsawait

MarianaTrenchThedocumentarytranscriptdescribestheoceaninthesurface-to-bottomorder,whichmakesitscontentmoreorganizedandeasiertofollow.Findtheexpressionsindicatingthechangesinposition.P5B2Readforwritingtechniquesthewritingordertheopenocea