Unit+5+Revealing+nature+Understanding+ideas+课件【知识精讲】高中英语外研版（2019）选择性必修第一册

Unit5Revealingnature(Understandingideas)AJourneyofDiscoveryLearningobjectivesIdentifythetypeofwritingandthemainideaofthepassagebythereadingskillofskimming;explainthecharacter’sdiscoveryprocessandthetextualstructureofthewholepassage;talkaboutthequalitiesthatthecharactershowedandreflectonthespiritofscientificexploration.Bytheendofthislesson,wewillbeableto:Understandingideas:Pre-reading

evolutiontreehigherformsoflifeevolvev.(developgradually)Lowerformsoflifeanimalsplantszebra斑马(哺乳动物）birdturtle海龟(爬行动物)fishcrab螃蟹(爬行动物)snail蜗牛(软体动物)earthworm蚯蚓

(环节动物)flatworm(扁形动物）poaramecium草覆中(单细胞生物)frog青蛙(两栖动物)starfish(棘皮动物)jellyfish

水母腔肠动物algae(藻类)algae(藻类)moss(苔鲜)gymnosperms裸子植物angiosperm

被子植物humanUsethetitleandpicturetomakepredictions.AJourneyofDiscoveryStrategy1Whenmakingpredictionsaboutapassage,readerscanaskquestionsbasedonthetitleandthepicturegiven.Usethetitleandpicturetomakepredictions.1.Whomadethejourney?2.Whydidthecharactermakethejourney?AJourneyofDiscovery3.Whenandwheredidthecharactertravel?4.Whatdiscoverywasmade?5.Howdidthecharactermakethediscovery?

1.Whatisthegenre(typeofwriting)ofthepassage?NarrativeB.ExpositionC.Argumentation2.Whichisthemainideaofthepassageandgiveyourreasons.A.Darwin’sinterestinvariouslivingthingsmadehimagreatnaturalist.B.Darwin’sjourneyontheBeagleinspiredhistheoryofevolution.C.Darwinwentonajourneytoconfirmhistheorythathumanshadevolvedovertime.Skimthroughthepassageandanswerthequestions.

1.Whatisthegenre(typeofwriting)ofthepassage?NarrativeB.ExpositionC.ArgumentationGenre:Elements:time,place,characterandeventBefore

thejourney

DuringthejourneyAfter

thejourney(Paragraph1)(Paragraph2-5)(Paragraph6-7)2.Whichisthemainideaofthepassageandgiveyourreasons.A.Darwin’sinterestinvariouslivingthingsmadehimagreatnaturalist.B.Darwin’sjourneyontheBeagleinspiredhistheoryofevolution.C.Darwinwentonajourneytoconfirmhistheorythathumanshadevolvedovertime.Skimthroughthepassageandanswerthequestions.IdentifythemainideaReason1:topicsentencesTopic

sentence

(inParagraph1):…hisadventureonthisshipwouldleadtooneofthemostimportantscientificdiscoveriesofalltime.Summarizingsentence(inParagraph7):It(OntheOriginofSpecies)haschangedideasaboutlifeonEarthforever.AnditallbeganwiththejourneyontheBeagle.IdentifythemainideaReason2:titleAJourney

of

Discovery

B.Darwin’sjourneyontheBeagle

inspired

histheoryofevolution.Strategy2Tosummarizethemainideaofapassage,wecanrefertotopicsentences,repetitivelyoccurringkeywordsandthetitle.Checkthepredictionsbyscanning.1.Whomadethejourney?(Darwin)2.Whydidthecharactermakethejourney?3.Whenandwheredidthecharactertravel?4.Whatdiscoverywasmade?5.Howdidthecharactermakethediscovery?2.WhydidDarwinwanttomakethejourney?(Paragraph1)ToexploretheunknownNOTthefirstchoicedisgraceShame,dishonor3.WhenandwheredidDarwintravel?HintScanthe

time

and

places

mentioned

in

the

passage.He

left

England

on

the

ship,the

Beagle,in1831.(Para2)The

Beagle

reached

the

Galapagos

islands

in1835.(Para4)Whatdiscoverywasmade?HowdidDarwinmakethediscovery?ClarifyDarwin’sdiscoveryprocess(p69)Putthepiecesinorder;Fillintheblanks.Strategy3Step1：Readthroughtheinformationonthepiecesandcirclethekeywords;Step2:Matchthekeywordsonthepieceswithrelevantinformationinthepassage;Step3:Numberthepiecesinorderoftime.12345Hestudiedvariouslivingthingsintheirnaturalenvironmentsandsamplesofplantsandanimalshehadcollected(Para2)verysimilartoeachother(Para3)cometoexist?(Para2)Maybeanimalsevolvedastheyadaptedto

theirchangingenvironments?(Para3)thattherewasadifferencebetweenthefinchesoneachoftheisland.(Para4)hadevolvedaccordingtowhatfoodwasavailableon

thatparticularisland.(Para5)thatthefincheshadevolvedfromacommonancestor,andithadslowlyevolvedintomanynewspecies.(Para5)hadevolvedfromlowerformsoflife(Para6)ThinkandshareDidpeopleacceptthistheoryatfirst?People’sreactionatfirst?Shocked

ReasonAtthattime,peoplebelievedthatallspecieshadappearedonEarthatthesametime,andhadnotchangedsince.(Para3)People’slongheldopinionDarwindidnotpublishhisTheoryofEvolutionuntil1859.ThinkandshareWhatkindofpersonwasDarwinaccordingtothepassage?Darwinwasadetermined

manwithstrongcuriosity

and

interest

inscience.Passionateaboutstudyingnature,hewasgoodatobserving,reflectingandmakingdiscoveries.Hisremarkablescientificachi