Unit 5 Revealing nature Understanding ideas ppt课件-（2019）新外研版高中英语选择性必修第一册.pptx

1、Unit5 RevealinUnit5 RevealinUndersUndersUnit5 RevealingUnderstanUnderstanLearning objecLearning objec1.Know1.Know DarwinDarwintheory of Evolutheory of Evolu2.Have an inter2.Have an inter3.Sum up Darw3.Sum up Darwqualities.qualities.A A Journey ofJourney of DiscoveryDiscoveryDidDid hishis father fath

2、er allowallow himhim to taketo take thisthis journey?journey?How long did the journey take?How long did the journey take?Read forRead for timetimetimetimeIn 1835,In 1835, orderorderInInFill in the time tableFill in the time table18311831 ， _h_e_h_e_ r_ r_ e _ a _ c _ h _ e _ d _e _ a _ c _ h _ e _ d

3、 _ _ _t t _ h _ e _ G _ h _ e _ G _ _ a _ l_ a _ l a _ p _ a _ g _ oa _ p _ a _ g _ o s sI_sI_s l _ a _ n _ d _ s _ .l _ a _ n _ d _ s _ . _ _ _ _ _ _ _ _hehe leftleft_England.England.填加标题_InIn 1859,1859,Today,Today,BeforeBefore thethejourneyjourneyDuringDuring thethejourneyjourney_it it is is_On th

4、eOriginof Specieswaswaspublishedpublishedregardedregarded_as a veryas a very_importantimportant_work.work.AfterAfter thethejourneyjourneyBefore the journeyBefore the journey Read forRead for detailsdetailsDoDo you think Darwin wasyou think Darwin was the bestthe bestman to man to bebe chosen chosen

5、byby thethecaptain captain ofof the ship? Why?the ship? Why?1.1. It was a youngIt was a young man who had left medical school withoutman who had left medical school withoutcompleting his pleting his degree.2.2. HeHe had recently received a letter from his father predicting thathad recently received

6、a letter from his father predicting thathehe would would bebe “a“a disgrace todisgrace to yourself andyourself and all yourall your family”.family”.Read Read forfor detailsdetailsDuring theDuring the journeyjourneyWhat didWhat didDarwinDarwindodo ononWhat wasWhat wasthe questionthe questionHow didHo

7、w diddifferentdifferentspeciesspeciescome tocome toexist?exist?that that hehe asked askedhimself?himself?the ship?the ship?WhatWhat waswasotherotherpeoplespeoplesopinion atopinion atthat time?that time?generategenerate an ideaan ideaButBut DarwinDarwin beganbegan toto thinkthink differently.differen

8、tly. HeHe noticednoticedthatthat somesome speciesspecies ofof animalsanimals werewere veryvery similarsimilar totoeacheach other.other. MaybeMaybe animalsanimals evolvedevolved asas theytheyadaptedadapted toto theirtheir changingchanging environments?environments? It It waswasjustjust anan idea,idea

9、, butbut enoughenough toto inspireinspire DarwinDarwin toto looklookforfor moremore evidence. evidence.ToTo looklook forfor moremore evidenceevidenceIt It waswas _thth_e e_ _ b b _ _ i i_ _ r r_ _ d d_ _ s s_ thatthat interestedinterested himhimthethe mostmost andand hehe noticednoticed thatthat the

10、irtheir beaksbeaksareare _d d _ _ if if_ _f f_ _ e e_ _ r r_ _ enen_t t_._.hadhad evolvedevolvedIt It seemedseemed theirtheir beaksbeaks _ accordingaccordingavailableavailableto what foodto what food was _ onwas _ on that particularthat particularDarwin suspected that the finches hadDarwin suspected

11、 that the finches hadevolved evolved fromfrom _ _ a a_ _c c _ _o o _ _mm _mm _o o_ _ n n_ _a a _ _n n _ _c c _ _e e _ _ s s_ _ t t_ _ o o_ _ r r. .DevelopDevelop thethe ideaideaWhen didWhen did Darwin publish his book?Darwin publish his book?What was theWhat was the reaction of thereaction of the ot

12、herother people?people?After theAfter the journeyjourneyIt It waswas a a completelycompletely newnew idea-idea- a atheorytheory ofof evolution.evolution. DarwinDarwinexplainedexplained thisthis theorytheory inin hishisbook,book, OnOn thethe OriginOrigin ofof Species.Species.It It waswas notnot publi

13、shedpublished untiluntil 18591859andand immediatelyimmediately causedcaused a astorm.storm. ManyMany peoplepeople refusedrefused totobelievebelieve thatthat livingliving things,things,includingincluding humans,humans, hadhad evolvedevolvedfromfrom lowerlower formsforms ofof life.life. TheyTheywerewe

14、re shocked.shocked.proposepropose a theory a theoryOnOn thetheGalapagosGalapagosIsland:Island: HeHenonot tced ced thatthatthe the beaksbeaks_On theOn theOrigin ofOrigin ofSpeciesSpecies waswas_On hisOn hisjourney ,journey ,hehestudied_studied_developideasgenerateLook forpropose atheorystudytheoryide

15、as more evidenceDarwinDarwinsuspectedsuspectedthatthat thetheIt It waswas justjustanan idea-idea-MaybeMaybe_finches_finches_HaveHave an an interviewinterviewwithwith DarwinDarwinXiao Ming: Good morning, ProfessorXiao Ming: Good morning, Professor Darwin.Darwin.Darwin:Darwin: Good morning.Good mornin

16、g.Xiao Ming: Can you tell Xiao Ming: Can you tell meme ThinkThink and Shareand ShareThereThere areare other secrets in theother secrets in the nature, which arenature, which arewaiting for morewaiting for more “Darwins” to “Darwins” to discover.discover. Actually,Actually,you areyou are thethe “Darw

17、ins”, so“Darwins”, so what preparationswhat preparationsshould you makeshould you make as a student?as a student?HomeworkHomework1.1. Introduce Introduce DarwinsDarwins journey ofjourney ofdiscovery to your classmates.discovery to your classmates.2.2. Do further researchDo further research on on Darwin Darwinandand his Theory his Theory ofof Evolution.Evolution.