Unit 5 Revealing nature Section A Understanding ideas（教学课件）-2022-2023学年高中英语外研版2019选择性必修第一册

Unit5RevealingnatureSectionAUnderstandingideas目录Pre-class01While-class02After-class0301Pre-classLeadinginVocabularybenefit

benefitsb./sth.对……有益搭配

benefitfrom/by得益于，从……中受益beofbenefit（tosb.）（对某人）有益get/gain/deriveabenefit（fromsth.）（从某事物）得到好处forone'sbenefit=forthebenefitofsb.为了某人的利益【单词积累】beneficialadj.有利的，有帮助的，有用的bebeneficialto对……有益练习：Thenewcreditcardswillbe_____greatbenefittoourcustomers.ofLeadinginVocabularydistant

bedistantfrom离……很远；与……不同，与……关系不密切【单词积累】distancen.距离；遥远；久远；疏远inthedistance在远处（距离很远）at/fromadistance从远处，离一段距离（不是很远）keepone'sdistance保持距离

练习：Thosestarsaredistant_____ourgalaxy.fromLeadinginVocabularydisgrace

beadisgrace是耻辱，是丢脸的事搭配

bringdisgraceon使……蒙羞indisgrace不光彩地disgraceoneself丢脸be(publicly)disgraced被（当众）羞辱

练习：Youare_____disgracetothemedicalprofession.aLeadinginVocabularybecrowdedwithcrowdinto涌入

crowdaround/round挤在

周围crowd.out把……挤出，排挤crowdin（onsb.）（问题或想法）涌上心头，涌入脑海thecrowd大众，百姓

acrowdof一群

crowdsof...成群的……练习：Sheshuthermindagainstthefearsthatcrowded_____onher.inLeadinginVocabularysuspect

suspectthat...怀疑……suspectsb.of(doing)sth.怀疑某人（做）某事【单词积累】（1）suspicionn.怀疑；嫌疑beundersuspicion受到怀疑onsuspicionof因涉嫌……（2）suspiciousadj.怀疑的；可疑的中be/becomesuspiciousabout/ofsth.怀疑……

练习：Thetwoofficials____________(suspect)ofhavingtakenbribes.aresuspectedCharlesDarwinandhisTheoryofEvolutionCharlesDarwin(1809–1882)wasanEnglishgeologistandnaturalist.InhisfamousbookOntheOriginofSpecies,Darwinproposedthetheorythatorganisms(individuallifeforms)evolveextremelyslowly.Hestatedthattheorganismsthatwerebettersuitedtotheirenvironmentswouldsurviveandpassontheirfavorablecharacteristicstothenextgeneration,whilethelesssuitableorganismswouldgraduallydieout.Hecalledthisprocess"naturalselection".02While-classActivity1Lookattheevolutionarytreeandanswerthequestions.1Whatspeciesdoyourecogniseinthepicture?2Whatfactorscancausetheprocessofevolution?Answer1Paramecium,earthworm,snail,crab,fish,tortoise,bird,horse,human,frog,algae,moss,fern.…2Students'ownanswers.Activity2Readthepassageandtalkaboutyourunderstandingofthetitle.学生分组，讨论对课文标题的理解。各小组组内核对答案，交流有效的阅读方法与技巧。小组活动Activity3Choosethemainideaofthepassageandgiveyourreasons.1Darwin'sinterestinvariouslivingthingsmadehimagreatnaturalist.2Darwin'sjourneyontheBeagleinspiredhisTheoryofEvolution.3Darwinwentonajourneytoconfirmhistheorythathumanshadevolvedovertime.Activity4Numberthepuzzlepiecesinorder.Organiseinformationfromthepassageandcompletethem.3LookformoreevidenceOntheGalápagosIslands:•Henoticedthattherewasadifferencebetweenthefinchesoneachoftheislands.•Itseemedthebeakshadevolvedaccordingtowhatfoodwasavailableonthatparticularisland.4DevelopideasDarwinsuspectedthatthefincheshadevolvedfromacommonancestor,whichhadarrivedontheislandsalongtimebeforeandithadslowlyevolvedintomanynewspecies.5ProposeatheoryTheTheoryofEvolution:livingthings,includinghumans,hadevolvedfromlowerformsoflife.1Onhisjourney•Darwinstudiedvariouslivingthingsintheirnaturalenvironmentsandsamplesoftheplantsandanimalshehadcollected.•Henoticedthatsomespeciesofanimalswereverysimilartoeachother.2GenerateideasDarwinaskedthequestions:•Howdiddifferentspeciescometoexist?•Maybeanimalsevolvedastheyadaptedtotheirchangingenvironments?03After-classThinkandshare自由讨论1Whyweremanypeople"shocked"byDarwin'stheory?Atthattime,peoplebelievedthatallspecieshadappearedonEarthatthesametimeandhadnotchangedsince,butDarwin'stheoryproposedthatlivingthings,includinghumans,hadevolvedfromlowerformsoflife,which,asaresult,shockedmanypeople.Thinkandshare自由讨论2WhatkindofpersonwasDarwinaccordingtothepassage?Darwinwasadeterminedman.Hehadstrongcuriosityandinterestinscienceandwasgoodatthinkingandmakingdiscoveries.Th