Unit+3+Conservation+Lesson+1+The+Sixth+Extinction 高中英语北师大版（2019）选择性必修第一册

Unit3ConservationLesson1TheSixthExtinctionActivateandshare1Whatcanyouseefromthispicture?2Whatcausedthoseanimalsandplantstobeextinct?Activateandshare3Whatdoestheword“extinction”mean?“Extinction”meansasituationinwhichsomethingnolongerexists.Itmaytalkaboutwhy“TheSixthExtinction”isgoingtohappenandhowwecanhandlethesituation.4Canyoupredictwhatthetextisaboutaccordingtothetitle“TheSixthExtinction”?ReadandexploreReadthetextandanswerthequestions.1HowmanytimesuptotodayhaslifeonEarthalmostdiedout?2AboutwhatpercentofallspeciesonEarthbecameextinctduringthemassextinctionknownasthe“GreatDying”?

3Whatdoscientiststhinkwillcausethenextmassextinction?Fivetimes.Morethan90%.Humanactivity.ReadandexploreReadthetextandcompletethenotes.Readandexploreentirespeciesarewipedoutfivetimesthethird:killed90%to96%ofallspecies;thefifth:whichoccurred66millionyearsago,causedthedeathofthedinosaursvolcanoeruptions,asteroidshittingtheEarthfromspace,changesinsealevels,thedecreaseofoxygencontentofthesea,globalwarmingchangethewaywelive,includingsettingupspecialareaswhereplantsandanimalscanbeprotected…entirespeciesarewipedoutfivetimesthethird:killed90%to96%ofallspecies;thefifth:causedthedeathofthedinosaursvolcanoeruptions,asteroids,sealevels,oxygen,globalwarmingchangethewaywelive;changehowweworkandtravel;improveourfamingmethodsBasedonthediagram,talkaboutthedifferentaspectsofextinctions.ReadandexploreReadandexplore1Whatdidscientistsfindoutin2015?2Whydoesthewriterthinkthesixthmassextinctionwillcome?3Whydoesthewriterbelievewe’llprobablydieoutif75%ofthe

Earth’sspeciesdieout?Readagainandanswerthequestions.Thestudyfoundthathowquicklyspeciesdieoutduetonaturalcauses,thatis,the“backgroundextinctionrate”.Theyfoundthathumanactivityiscausingspeciestodieout1,000timesfasterthannormal.BecausehumanactivityhasnegativelyaffectedallotherspeciesonEarth,includinganimalsandplants.Becauseourworldandourlivesdependonthebalanceinnaturebetweenanimalsandplants.Readandexplore4Whatdidpeopledointhecasestudyto

protectblackrobins?Whichclaim(s)didthe

casestudysupportinthetext?PeopleprotectedOldBlue’seggs,helpedthemtohatch,andtookcareofthechicks.Peoplearerestoringtheirhabitatsandremovingsmallanimalslikemiceandcatsfromtheislandswheretheylive.Thecasestudyshowedthatevenindesperatesituations,wecandosomethingtohelp.Inshort,it’snevertoolate.Thinkandshare1.Usedifferentcoloredpenstohighlightatleastoneexampleforeachofthefourelementslistedbelowindifferentcolors.Thenfindout:Whattypicallanguageisused?Whattexttypeisthispieceofwriting?Whatisitscommunicativepurpose?2Whatwritingmethodsdoesthewriterusetoconvincereaders?Areyouconvinced?Whyorwhynot?▪facts ▪opinions/predictions

▪reasons ▪solutionsThinkandshareFacts:Line2-6Reasons:Line6-9Opinions/Predictions:Line9-10FactsThinkandshareFactsReasons(1)TypicallanguageFacts:Reasons:Opinions/predictions:

Solutions:data,number,statisticsthereasonsbecause…Sbsays/predicts/believes,inone’sopinion,fromsb’spointofviewWeneedtodo;onlybydoingthiscanwesolvetheproblem…Opinion/PredictionReasonsOpinion/PredictionSolutionsThinkandshare(2)Whattexttypeisthispieceofwriting?Exposition.Causeandeffect&problemandsolution(3)Itscommunicativepurposeis___________________.toexplainwhatthesixthextinctionisanditseffectsandcallonpeopletotakeactiontopreventitfromhappeningThinkandshare2.Whatwritingmethodsdoesthewriterusetoconvincereaders?Areyouconvinced?Whyorwhynot?citingideasfromexpertsorauthoritiesgivingexamplesusingdataIbelievethatifwetakeactionnowitisnottoolatetosaveotherspeciesfromextinction.Theblackrobinwassavedfromextinctionwhenonlyfivebirdsremained,soIthinkitispossibletosaveanyspeciesifweactrightnow.NotesWe’llwipeoutanyenemythatdarestoinvadeourterritory.敌人胆敢来犯，我们就把它消灭。1wipeout消灭；彻底摧毁Didyouwipeoutthedebts?你还清债务了吗？Theheathadwipedusout.炎热使我们筋疲力尽。wipesbout:

tomakesbextremelytiredNotes2betoblame应该负责；应受责备Someresearchershavespeculatedthathigh-heeledshoesmaybetoblame.有研究者推测高跟鞋可能是罪魁祸首。Expertssaythatmisconceptionsofwealthmightbetoblameforthetrend.专家指出错误的财富观可能是导致这一现象的罪魁祸首。Notes3dieout灭绝；消失；逐渐消失Butarewepreparedtoseepeopledieandtheirculturesdieout?但是我们准备好了看那些人死去，看他们的文化消亡吗？Inthismanner,theweakandunfitspeciesdieouttobereplacedbyastronger,healthier,moreimpressivespecies.在这种形式下，弱小和不适宜的物