Unit1OurLivingPlanetReading课件高中英语牛津译林版（2020）选修第一册

Step1Lead-inInallthingsofnaturethereissomethingofthemarvellous.---Aristotle极好的；非凡的MotherNatureisagreatartistwhocreatesmasterpiecesallovertheworld.•ZhangyeUNESCOGlobalGeopark,China:

multicolouredfoldsofrocks,whicharecausedby_____________oftheEarth’splatesandcarvedbywindandrain•Pamukkale,Turkey:the“cottoncandy”landscape,whichisa“waterfall”ofrockresultingfrom___________leftbyflowingwater•LakeHillier,___________:thesoftpinkofitsstillwaters,whichisbelievedtobecausedbyaMicroorganismmovementsmineralsAustralia1Whichofthesegeologicalwondersattractsyoumost?Why?2Whatothergeologicalwondersdoyouknowabout?Step2Pre-reading•Whatdoyouknowabouttheworldbeneaththeocean?•Wouldyoudivetotheoceanbottomifyouhadthechance?Whyorwhynot?IntroductionPara1MainbodyParas2-4MainbodyParas2-4ConclusionPara5Step3ReadingforthestructureStep4Readingfordetails(Para1)2.What’sthepurposeofthefirstparagraph?Tointroducethetopic.1.Whatpercentageofworld’soceanshaveweexplored?lessthan20percentStep4Readingfordetails(Paras2-4)MajorzonesoftheoceanNamesDepthsConditionsLifeforms/GeologicalformationsTheopenoceanthefirst_____metres_______lightmuchofthemarinelifesuchas__________________________The__________below200metres_____sunlight

No

______life,small_________________,

hunterswith___________________eyes200visibledolphins,coralsandseaweedstwilightzonelittleplanttelescopic,upward-pointingfilterfeedersThedeepoceanpast_________metres______light,above______temperatures,______pressure__________organisms,fishhavingboth________________organsTheoceanfloorthedeepestpoint---nearly___________

metresbelowsealevel_________conditions________________________1000nofreezinghugeblindmaleandfemale11,000extremeshrimps,remarkableorganisms,vents,rockbridgesStep4Readingfordetails(Paras2-4)Whatdosmallfilterfeedersdoatnight?2)Howdoblindcreaturesinthedeepoceanmanagetosurvive?3)Whydosomefishhavebothmaleandfemaleorgans?4)Whathaschangedscientificopinionaboutthechancesoftherebeinglifeelsewhereintheuniverse?Step4Readingfordetails(Paras2-4)Whatdosmallfilterfeedersdoatnight?2)Howdoblindcreaturesinthedeepoceanmanagetosurvive?Theydependonothersensessuchassmellandtheirabilitytodetectslightchangesinwaterpressuretoobtainfoodandavoidbeingcaught.L24-26Theyswimuptofeedinthenutrient-richwatersabove.L13Step4Readingfordetails(Paras2-4)3)Whydosomefishhavebothmaleandfemaleorgans?4)Whathaschangedscientificopinionaboutthechancesoftherebeinglifeelsewhereintheuniverse?Somefishhavebothmaleandfemaleorganstoincreasethechancesofreproduction,asfisharesoscarceatthesedepthsthatitcanbedifficultforthemtofindamate.L26-27Knowingthatlifecanexistintheextremeconditionsontheoceanfloor.L34-35Step4Readingfordetails(Para5)Howisparagraph5relatedtoparagraph1?

Echo

arhetoricalquestionStep5SummarizingmainideasMuchofthemarinelifelivesintheopenocean,andsmallfilterfeedersandhuntersliveinthetwilightzone.ThedeepoceanishometothestrangestcreaturesontheEarth.Shrimpsandotherorganismslivingaroundhydrothermalvents,andtheMarianaTrenchcanbefoundontheoceanfloor.Morewondersbeneaththesurfaceoftheoceanawaittobediscovered.Documentary:PlanetEarthStep6DiscussingandsharingWhydoestheauthormentionMountQomolangmawhendescribingtheChallengerDeep?Doestheauthorgiveotherexampleslikethisinthedocumentarytranscript?2)Whataretheadvantagesofexploringtheocean?3)Ifyouweretowriteanarticleabouttheworldbeneaththeocean,whatotherinformationwouldyouinclude?Step6Discussingandsharing1)WhydoestheauthormentionMountQomolangmawhendescribingtheChallengerDeep?Doestheauthorgiveotherexampleslikethisinthedocumentarytranscript?Step6Discussingandsharing2)Whataretheadvantagesofexploringtheocean?Theocean’smanyuniquelifeforms,habitatsandgeologicalformationsnotonlyhelpusbetterunderstandlife,butalsoopenupvariousopportunitiesfornewdiscoveriesandinnovativesolutionstoexistingproblems.Forinstance,currentdiscoveriesoflifeformsintheoceanhavescientistsexcitedaboutthepossibilitiesoflifeonplanetsthathaveextremeenvironments.Furtherexplorationcouldleadtonewmedicines,foodandrenewableenergysources.Besides,monitoringchangesintheoceanscouldhelpscientistslearnwaystoaddresschangesintheenvironment,suchasclimatechange.ExploringtheoceanisalsoagoodwaytofindoutmoreabouthowtheareabeneaththeEarth’scrustfunctions.Thiscouldleadtodevelopingbetterearly-warningsystemsfornaturaldisasterslikeearthquakesandtsunamis.Step6Discussingandsharing3)Ifyouweretowriteanarticleabouttheworldbeneathth