Unit5IntothewildUnderstandingideas课件高中英语2

Unit5TheMonarch’sJourney

Understandingideas

Bytheendofthisclass,youwillbeableto●masterthemainideaofthepassage.●figureoutthestructureoftheexpositorytext(说明文)bydrawingthe“cause-effect”flowchart.●learnthemysteryofthemonarch’smigration,thereasonwhyitspopulationiscrashingandknowhowtotakemeasurestoprotectit.●raisetheawarenessofprotectingallthewildlifeinnature.Learningobjectives:Leading-inTheyarewildgeese(大雁).Theyareflyingsouthtosearchforthewarmerweather.EverySpring,theywillflybacktothenorthtoreproduceorgivebirthtobabies.Thisannualmovementiscalledmigration(迁徙).Lookandchoosetheanimalsthatmigrate.monarchbutterfly黑脉金斑蝶Siberiancrane西伯利亚鶴redpanda红熊猫Atlanticsalmon大西洋鲑鱼killerwhale虎鲸Africanlion非洲狮√√√√PredictwhatthetextwillbeaboutTopicDetailsThemainideaofapassagecanbefoundfromitstitle,thetopicsentence,oreventhepictures.Themonarch’smigrationTimeReasonTheroute(路线)Howtoreachtheestination...While-readingPara1ThemeasurestoprotectthemonarchPara2&3Themonarch’stroubleandreasonsPara4ThedefinitionaboutmigrationPara5Theintroductionofthemonarch’smigrationActivity1ScanthepassageandmatchthemainideaswitheachparagraphWhattypedoesthepassagebelongto?Anexpositorytext(说明文)Para1①Manyanimalsmovefromoneplacetoanotheratcertaintimesoftheyear.Thisannualmovementiscalledmigration.②Theymigratetofindfood,seekapartner,orinsearchofwarmerweather.③OneofthemostwonderfulmigrationsinnatureisthatoftheNorthAmericanmonarchbutterfly.Activity2

Listentothepassageandfindthekeyinformationofeachparagraph

While-readingTheMonarch’sJourney1.Whatisthefunctionofthisparagraph?

①Whatiscalledmigration?

②Thepurposeofanimals’migration

③IntroducethetopictobediscussedinthispassageWhile-reading√While-readingPara2&3Everyautumn,millionsofthesebeautifulinsectswithfineblackandorangewingsbeginalonganddifficultjourney.Somehowtheymanagetotravelaround4,000kilometressouthandfindtheirwaytoCaliforniaorMexico.However,untilrecentlynooneknewhowtheydidthis.AteamofscientistsledbyProfessorEliShlizermanattheUniversityofWashingtonhasnowfoundtheanswer.Theyhavefoundoutthatthemonarchisabletotellthetimeofday.Itusesitseyestomeasurethepositionofthesun.Thesetwopiecesofinformation-thetimeofdayandthepointwherethesunisinthesky-allowthebutterflytodeterminethewaytogo.Eventually,itmanagestoreachtheplaceswhereitwillspendthewinter.While-readingTask1.Pleasetellmethetimeandtherouteofthemonarch’smigrationTask2.Pleasefindoutwhatmysterythescientistshavesolved.ThenorthAmericaCanadaCaliforniaMexico地图出自：普通高中教科书

英语必修一，

外语教学与研究出版社，2019.6版，

第50页a.

Themonarchbutterflyisabletotell_____________.b.Usingthesetwopiecesofinformation,themonarchbutterflydetermines____________.c.Themonarchbutterflymeasures____________________withitseyes.d.Themonarchbutterflyreaches__________________________________.

Task3.Completethesentencesandthe“cause-effect”flowchart.Task3.Completethesentencesandthe“cause-effect”flowchart.a.

Themonarchbutterflyisabletotell_____________.b.Usingthesetwopiecesofinformation,themonarchbutterflydetermines____________.c.Themonarchbutterflymeasures____________________withitseyes.d.Themonarchbutterflyreaches__________________________________.thetimeofdaythewaytogotheplaceswhere

thesunitwillspendthewinterthepositionof

bdacPara4Thesolutiontothemysteryofthemonarch'samazingabilitycomesatatimewhenitisinserioustrouble.Itspopulationhascrashedbyasmuchas90percentinthelastfewyears.Sadly,humanactivityisthemainreasonwhythenumberofmonarchbutterfliesisfalling.Inmanyoftheplaceswherethebutterflycanbefound,peoplearedestroyingthenaturalenvironment.Theycutdowntreesandusechemicalsthatkilltheplantsthatmonarchcaterpillarseat.While-readingWhile-readingPara5Theresearchonthemonarch'sbehaviorhashoweverledtoagreaterawarenessofthiscreature.Peoplehavebeenworkingtogethertorecorditsmigrationandmakesurethatthereareenoughplantsforittofeedon.Ifthisworks,theremaycomeatimewhenthenumberofmonarchbutterfliesincreasesonceagain.Themoreweknowaboutthislovelycreature,thegreaterthechanceitwillsurviveandkeepitsplaceinthenaturalworldforalongtimetocome.e.Humans_________trees.f.The______________________________where

monarchscanbefoundisdestroyed.g.Humansusechemicalsthat_______________thatmonarchcaterpillarseat.h.Themonarchbutterfly’spopulation__________________________________inthelastfewyears.

Completethesentencesandthe“cause-effect”flowchart.Completethesentencesandthe“cause-effect”flowchart.e.Humans_________trees.f.The______________________________where

monarchscanbefoundisdestroyed.g.Humansusechemicalsthat_______________

thatmonarchcaterpillarseat.h.Themonarchbutterfly’spopulation__________________________________inthelastfewyears.cutdownnaturalenvironmentofmanyplaceskilltheplantsbyasmuchas90percenthascrashed

fhegWhile-readingWhateffortshavebeenmadetoprotectthem?Activity3

Choosewhereyouaremostlikelytofindthepassage.

1In

a

scientific

researchpaperaboutthemonarchbutterfly'smigration.2Inapopularnaturemagazineintroducingthe

monarch

butterfly.3Inatravelleafletencouragingpeople

tovisitNorth

America.a

scientific

researchpaperatravelleafletPost-readingActivity4Thinkandshare:1.Whatimpressesyoumostaboutthemonarchbutterfly?Itsaid,“Itspopulationhascrashedbyasmuchas90percentinthelastfewyears”inthetext.Thisgavemeahugeshock.It'shightimethatweshouldthinkoverourbehaviorandtakemeasurestoprotectthemandallofthewildlife.Let’sliveinharmonywitheachother.Post-reading2.Whatcanpeopledotohelpprotectthemonarchbutterfly?Activity4Thinkandshare:●Plantnativemilkweedspeciestofeedon●Donotusechemicalsthatkilltheplantsasmuchaspossible●ProtecttheirnaturalenvironmentWatchthevideoaboutMonarchbutterflies’amazingmigrationThreemonths____(late),theywillflybacknorthforthesummer.Butthisyeartherewillbefar______(few)butterfliesreachingtheirdestination(目的地).FouroutofTenwilldie__________lackoffood.Despitecrashinginnumbers,theirdreamlikemigrationofthemonarchsremainsaspringtime________(wonderful).Scientistsareaskingfortheirpathtobepreserved(保护).It’shightimethatweshouldthinkoverourbehaviorandtake_________(measure).Post-readingActivity5Completeandread

Threemonths____(la