Unit+5+Revealing+nature+Understanding+ideas高中英语外研版（2019）选择性必修第一册

UnderstandingideasAJourneyofDiscoveryLearningObjectives1.tohaveacomprehensionofthepassage--general&detailedinformation;2.tohaveabasicknowledgeofthediscoveryofevolution;3.totalkaboutDarwin’spersonalitiesandlearnfromhim.IPre-readinghuman

snailfern蕨类植物moss藓类植物earthwormparamecium[ˌpɛrəˈmisiəm]草履虫algae[ˈældʒiː]藻类植物1.Whatspeciesdoyourecogniseinthepicture?evolutionary

tree

birdfrogP66Activity1

zebra

fishlowerformsoflife

higherformsoflife

evolve---evolutioncrab

tortoiseP66Activity1lowerformsoflife

higherformsoflife

evolve---evolution2.Whatfactorscancausetheprocessofevolution?reasonsTheever-changingenvironmentofnature（不断变化的自然环境）；populationimmigration;geneticmutation(基因突变)...CharlesDarwinIfafriendofyouiscuriousaboutevolution,whichfamouspersondoyourecommendhimtoknowabout?CharlesDarwinandhisTheoryofEvolutionCharlesDarwin

(1809

–1882)wasanEnglishgeologistandnaturalist.InhisfamousbookOntheOriginofSpecies,Darwinproposedthetheorythatorganisms(individuallifeforms)evolveextremelyslowly.Hestatedthattheorganismsthatwerebettersuitedtotheirenvironmentwouldsurviveandpassontheirfavourablecharacteristicstothenextgeneration,whilethelesssuitableorganismswouldgraduallydieout.Hecalledthisprocess“naturalselection”.What’sthestorybehindDarwin’sdiscoveryofTheoryofEvolution?TurntoP66andsteponDarwin’sjourneyofdiscovery!IIFastreading1.Lookatthepictureandthepassage

title,how

doyouunderstandthetitle?Darwin’sresearchworkleadingtohisdiscoveryofevolutiongenerally:atripfromoneplaceto

anotherplaceliterarily:theprocessbywhichsomethinggraduallydevelops事物逐渐发展的过程HeleftEnglandontheship,theBeagle,in1831.2.Readthepassageandfindoutaboutthetypeofwriting.AnarrativeWhentheBeaglereachedtheGalapagosIslandsin1835,Darwinsawavarietyofnewspecies,…)…IIICarefulreadingLabels

on

a

young

manPara1Hewasnotthecaptain’sfirstchoice.

Hewasayoungmanwhohadleftmedicalschoolwithoutcompletinghisdegree.Hewasadisgracetohimselfandallhisfamily.inthecaptain’seyesin

his

father'seyesin

common

people’s

eyesintroduction：choosethecorrectanswer.1.Whatisthefunctionofpara.1?TopraiseCharlesDarwinToarousereaders’interestsTointroduceCharlesDarwin’sachievementsToinformreadersofCharlesDarwin’slifeWhichofthefollowingstatementsaboutCharlesDarwinisTrue?Darwinwantedtobenefitfromvisitinglittle-knowncountries.Darwinquittedmedicalschoolduetohislackofmoney.Darwin’sfatherwassatisfiedwithDarwin.Darwin’smadeasignificantscientificdiscoverythankstohisadventuresontheshipBeagle.BPara1DPara2askinghimselfaquestioncollectingsamplesCharlesDarwinwasageologistandnaturalist,fascinatedbyrocks,plantsandanimals.Howdiddifferentspeciescometoexist?

OnhisjourneywhowhatPara3howtoprovewhat

Generate

ideasold

ideasnewideasAllspecieshadappearedonEarthatthesametime,andhadnotchangedsince.Animalsevolvedastheyadaptedtotheirchangingenvironments.To

look

for

more

evidencePara4-5

Lookforevidence&Develop

the

ideashowanswerofthatquestionDarwinnoticedfinches’beakshadevolvedaccordingtowhatfoodwasavailableonthatparticularisland.Newspeciesofplantsandanimalsevolvedfromearlierancestors.Para6-7Proposeatheory&Concludewhatpeople'sreactionhowinfluenceAtheoryofevolutionDarwinexplainedthistheoryinhisbook,OntheOriginofSpecies.Manypeoplerefusedtobelieve.Theywereshocked.Later,moreandmorepeoplestartedtobelievehistheory.OntheOriginofSpeciesisregardedasoneofthemostimportantworkseverwritten.IthaschangedideasaboutlifeonEarthforever.summaryforstructurePara.1Para.2Para.3Para.4Para.5Para.6Para.7IntroductionOnhisjourneyGenerateideasLookformoreevidenceDevelopideasProposeatheoryConclusionP69Activity412345samplesoftheplantsandanimalsverysimilartoeachother.cometoexist?Maybeanimalsevolvedastheyadaptedtotheirchangingenvironmentstherewasadifferencebetweenthefinchesoneachoftheislands.hadevolvedaccordingtowhatfoodwasavailableonthatparticularislandhadevolvedfromacommonancestor.arrivedontheislandsalongtimebeforehadevolvedfromlowerformsoflifeP69Activity412-5Thetextisorganizedinorderof______.Para.___Para.___Para.6-7timeBeforethejourneyDuringthejourneySummarize&RetellingAfterthejourneyDarwin’sinterestinvariouslivingthingsmadehimagreatnaturalist.B.Darwin’sjourneyontheBeagleinspiredhis

TheoryofEvolution.C.Darwinwentonajourneytoconfirmhistheorythathumanshadevolvedovertime.pun双关3.Choosethemainideaofthepassageandgiveyourreasons.P68Activity3P69ThinkShare1.

Whyweremanypeople“shocked”byDarwin’s

theory?Atthattime,peoplebelievedthatallspecieshad

appearedonEarthatthesametimeandhadnot

changedsince,butDarwin’stheoryproposed

thatlivingthings,includinghu