Unit5RevealingnatureUnderstandingideas課件高中英語(yǔ)選擇性

新外研社高中英語(yǔ)選擇性必修一Unit5Revealingnature

StartingOut&UnderstandingIdeasThecaptainoftheship,the

Beagle,wantedsomeonewhowould“profitbytheopportunityofvisitingdistantcountriesyetlittleknown”.Thepersonwhoansweredthecallwasnotthecaptain’sfirstchoice.Itwasayoungmanwhohadleftmedicalschoolwithoutcompletinghisdegree.What’smore,hehadrecentlyreceivedaletterfromhisfatherpredictingthathewouldbe“adisgracetoyourselfandallyourfamily”.Despiteallthis,hisadventuresonthisshipwouldleadtooneofthemostimportantscientific

discoveriesofalltime.Theyoungmaninquestion,CharlesDarwin,wasageologistandnaturalist,fascinatedbyrocks,plantsandanimals.HeleftEnglandontheship,the

Beagle,in1831.Thejourneygavehimthechancetostudyvariousliving

thingsintheirnaturalenvironments.AfterDarwinhadspentsometimeinSouthAmerica,hisroomontheshipwascrowdedwithsamplesoftheplantsandanimalshehadcollected.Ashestudiedthese,heaskedhimselfthequestion:howdiddifferentspeciescometoexist?Atthattime,peoplebelievedthatallspecieshadappearedonEarthatthesametime,andhadnotchangedsince.ButDarwinbegantothinkdifferently.Henoticedthatsomespeciesofanimalswereverysimilartoeachother.Maybeanimalsevolvedastheyadaptedtotheirchangingenvironments?Itwasjustanidea,butenoughtoinspireDarwintolookformoreevidence.Whenthe

Beagle

reachedtheGalápagosIslandsin1835,Darwinsawavarietyofnewspecies,but

itwasthebirdsthatinterestedhimthemost.Darwinnoticedthattherewasadifferencebetweenthefinchesoneachoftheislands.Itseemedtheirbeakshadevolved

accordingtowhatfoodwasavailableonthatparticularisland.Darwinsuspectedthatthefincheshadevolvedfromacommonancestor,whichhadarrivedontheislandsalongtimebefore.Overtime,ithadslowlyevolvedintomanynewspecies.Andthatwastheanswertohownewspeciesofplantsandanimalscametoexist:theyevolvedfromearlierancestors.

Today,OntheOriginofSpecies

isregardedasoneofthemost

importantworkseverwritten.IthaschangedideasaboutlifeonEarthforever.AnditallbeganwiththejourneyontheBeagle.Itwasacompletelynewidea–atheoryofevolution.Darwinexplainedthistheoryinhisbook,OntheOriginofSpecies.Itwasnotpublisheduntil1859andimmediatelycausedastorm.Manypeoplerefusedtobelievethatlivingthings,includinghumans,hadevolvedfromlowerformsoflife.Theywereshocked.ButDarwin’sscientificstudiesweresoconvincingthatmoreandmorepeoplestartedtobelievehistheory.1.Howcanseedstravel?Howcanthisbenefitplants?2.Canyouthinkofanotherexampleofseedstravelling?Shareitwiththeclass.Watchthevideoandanswerthequestions.Activity1Howseedstravel?Howcanseedstravel?

Seedscanetravelgreatdistancesbybeingcarriedbythe_________,uponthe____________,__________or__________.windwateranimalspeople2.Howcanthisbenefitplants?Seedshavea__________(better/worse)chanceatlifewhentheyare________(closer/further)awayfromtheirparentplant.Growingtoo_________(far/close)totheparentplantmeansseedsmightnotgetenough_______,________andnutrientsfromthe_______.Aspeciesis________(more/less)likelyto_________ifitsmembersaremore________(closely/widely)spread.betterfurtherclosesunwatersoilmoresurvivewidelyThestructure12--5Thetextisorganizedin______order.Para___Para___Para6-7timeBefore

thejourneyDuring

thejourneyEnglandIn1831In1835FastreadingCanyoufindoutwhatkindofnarrativeorder(敘述順序)?Choosethemainideaofthepassageandgiveyourreasons.

1

Darwin’sinterestinvariouslivingthingsmadehimagreatnaturalist.2

Darwin’sjourneyontheBeagle

inspiredhisTheoryofEvolution.3

Darwinwentonajourneytoconfirmhistheorythathumanshadevolvedovertime.1.Thecaptainoftheship,the

Beagle,wantedsomeonewhowould“profitbytheopportunityofvisitingdistantcountriesyetlittleknown”.Thepersonwhoansweredthecallwasnotthecaptain’sfirstchoice.Itwasayoungmanwhohadleftmedicalschoolwithoutcompletinghisdegree.What’smore,hehadrecentlyreceivedaletterfromhisfatherpredictingthathewouldbe“adisgracetoyourselfandallyourfamily”.Despiteallthis,hisadventuresonthisshipwouldleadtooneofthemostimportantscientificdiscoveriesofalltime.Para

1：Labels

on

a

young

manincaptain’seyesin

common

people’s

eyesin

his

families’

eyesHewasnotthecaptain’sfirstchoice.

Hewasadisgracetohimselfandallhisfamily.Hewasayoungmanwhohadleftmedicalschoolwithoutcompletinghisdegree.2.Theyoungmaninquestion,CharlesDarwin,wasageologistandnaturalist,fascinatedbyrocks,plantsandanimals.HeleftEnglandontheship,the

Beagle,in1831.Thejourneygavehimthechancetostudyvariouslivingthingsintheirnaturalenvironments.AfterDarwinhadspentsometimeinSouthAmerica,hisroomontheshipwascrowdedwithsamplesoftheplantsandanimalshehadcollected.Ashestudiedthese,heaskedhimselfthequestion:howdiddifferentspeciescometoexist?Para

2：StartajourneywhowhatcollectingthingsaskinghimselfaquestionCharlesDarwinwasageologistandnaturalist,fascinatedbyrocks,plantsandanimals.Howdiddifferentspeciescometoexist?SamplesoftheplantsandanimalsPara

3：Generate

newideasold

ideasnewideaswhathowtoproveAllspecieshadappearedonEarthatthesametime,andhadnotchangedsince.Animalsevolvedastheyadaptedtotheirchangingenvironments.To

look

for

more

evidence.3.Atthattime,peoplebelievedthatallspecieshadappearedonEarthatthesametime,andhadnotchangedsince.ButDarwinbegantothinkdifferently.Henoticedthatsomespeciesofanimalswereverysimilartoeachother.Maybeanimalsevolvedastheyadaptedtotheirchangingenvironments?Itwasjustanidea,butenoughtoinspireDarwintolookformoreevidence.Para

4-5Develop

the

ideashowanswerofthatquestionDarwinnoticedfinches’beakshadevolvedaccordingtowhatfoodwasavailableonthatparticularisland.Newspeciesofplantsandanimalsevolvedfromearlierancestors.4.Whenthe

Beagle

reachedtheGalápagosIslandsin1835,Darwinsawavarietyofnewspecies,butitwasthebirdsthatinterestedhimthemost.Darwinnoticedthattherewasadifferencebetweenthefinchesoneachoftheislands.Itseemedtheirbeakshadevolvedaccordingtowhatfoodwasavailableonthatparticularisland.5.Darwinsuspectedthatthefincheshadevolvedfromacommonancestor,whichhadarrivedontheislandsalongtimebefore.Overtime,ithadslowlyevolvedintomanynewspecies.Andthatwastheanswertohownewspeciesofplantsandanimalscametoexist:theyevolvedfromearlierancestors.Evidence1831theBeaglestarted

his

journeySouthAmerica,askedhimselfquestions(generatedideas)(developed

an

idea)answered

the

question18351859published

the

book

(proposed

a

theory)

Darwinspent_____yearsonhisdiscoveryButspent_____yearspublishinghisTheoryofEvolutionin1859424A________Journeyof__________Discoveryby_______DarwintoughimportantbraveperseverantSummaryPostreadingWhathaveyoulearntaboutthespiritofscientificexploration?Howcanthisspirithelpyouinyourlifeandstudies?WhatkindofpersonwasDarwinaccordingtothepassage?Whathaveyoulearntaboutthespir