Unit5IntothewildUnderstandingideas课件-高中英语外研版

Unit5Understandingideas--TheMonarch’sJourneyLearningaims1.Tounderstandthetextindetails.2.Toimprovethereadingskills,especiallyfastreadingandcarefulreading.3.Tousetheflowcharttoexpresscause—effectrelationship.4.Toenhancetheawarenessofprotectinganimals.Migratemeansanimalsmovefromoneplacetoanother.Therearemanyanimalsthatmigrateeveryyear.monarchbutterflyAtlanticsalmon

Siberiancranekillerwhale（鲑鱼）（西伯利亚鹤）（虎鲸）（黑脉金斑蝶）migrationmigratev.迁徙n.迁徙TheMonarch’sJourneyTheNorthAmericaMexicoCaliforniaThemonarchtakesajourneyfrom_______________to_________and_____________.WhileReading（一）Manyanimalsmovefromoneplacetoanotheratcertaintimesof

theyear.Thisannualmovementiscalledmigration.许多动物都会在每年的特定时间从一处迁移到另一处。这种一年一度的行为叫作“迁徙”。Theymigratetofindfood,seekapartner,orinsearchofwarmerweather.它们为了觅食、寻找配偶或温暖的环境而迁徙。OneofthemostwonderfulmigrationsinnatureisthatoftheNorthAmericanmonarchbutterfly.自然界最为壮观的迁徙之一就是北美洲黑脉金斑蝶的迁徙。

TheMonarch’sJourney黑脉金斑蝶的旅程1、fromone...toanother从一个……到另一个……2、annual/ˈænjuəl/adj.一年一度的，每年的anannualmovement一年一度的行为/活动3、migrate/maɪˈɡreɪt/v.移栖，迁徙4、seek/siːk/v.寻找，寻求seekadvice/help征求意见/寻求帮助5、insearchof寻找（二）Everyautumn,millionsofthesebeautifulinsectswithfineblackandorangewingsbeginalonganddifficultjourney.每年秋天，数百万只这种翅膀橙黑相间的美丽昆虫都会开启漫长且艰辛的旅程。Somehowtheymanagetotravelaround4,000kilometressouthandfindtheirwaytoCaliforniaorMexico.它们总是能够完成约4000千米的南行旅程，成功到达（美国）加利福尼亚州或墨西哥。However,untilrecentlynooneknewhowtheydidthis.然而，直到最近人们才明白它们是如何做到的。1、millionsof数百万的2、somehowadv.用某种方法，不知怎么地3、managetodosth.设法做成某事4、、findone’swayto...到达……；找到去……的路appearancereasonstomigratetimeofmigrationplacestomigratedistancetomigrateCompletethechart(Para1-2)beautifulinsectswithfineblackandorangewingsfindfood,seekapartner,insearchofwarmerweathereveryautumn4000kilometresCaliforniaorMexico（三）AteamofscientistsledbyProfessorEliShlizermanattheUniversityofWashingtonhasnowfoundtheanswer.一支由伊莱·史利泽曼教授领导的来自华盛顿大学的科学家团队现已找到了答案。Theyhavefoundoutthatthemonarchisabletotellthetimeofday.Itusesitseyestomeasurethepositionofthesun.他们发现，黑脉金斑蝶可以判断时间，并能用眼睛测量太阳的位置。Thesetwopiecesofinformation—thetimeofdayandthepointwherethesunisinthesky这两条信息—一天中的时刻和太阳在天空中的位置—allowthebutterflytodeterminethewaytogo.让黑脉金斑蝶能够判定前进方向。Eventually,itmanagestoreachtheplaceswhereitwillspendthewinter.最终成功抵达过冬的地点。twopiecesofinformation两条信息onepieceofinformation一条信息allowsb./sth.todosth.允许/让/使某人/某物做某事determine/dɪˈtɜːmɪn/v.测定，确定eventually/ɪˈventʃuəli/adv.终于，最终(=finally/atlast)a.Themonarchbutterflyisabletootell__________________________.b.Usingthesetwopiecesofinformation,themonarchbutterflydetermines____________________.c.Themonarchbutterflymeasures_______________________withitseyes.d.Themonarchbutterflyreaches__________________________________________.thetimeofthedaythewaytogothepositionofthesuntheplaceswhereitwillspendthewinterdacbReadpara3andcomplete.1、solution（n）.解决，解决方法2、thekeyto...……的关键3、theentranceto...……的入口4、mystery（n）.难以理解的事物，谜5、amazing（adj）.惊人的，了不起的（四）Thesolutiontothemysteryofthemonarch’samazing

abilitycomesatatimewhenitisinserioustrouble.黑脉金斑蝶这一惊人能力的奥秘被揭开时，这一生物正处于水深火热的生存状态中。Itspopulationhascrashedbyasmuchas90percentinthelastfewyears.其数量在近年内减少了百分之九十之多。Sadly，humanactivityisthemainreasonwhythenumberofmonarchbutterfliesisfalling.人类活动是造成其数量下降的主要原因。Inmanyoftheplaceswherethebutterflycanbefound，在黑脉金斑蝶生存的许多地方，peoplearedestroyingthenaturalenvironment.Theycutdowntrees人们正破坏着那里的自然环境。他们砍伐树木，andusechemicalsthatkilltheplantsthatmonarchcaterpillarseat.他们所用的化学制剂杀死了黑脉金斑蝶幼虫食用的植物。6、inserioustrouble遇到很大的麻烦7、crash(v).暴跌8、percent(n).百分比asmuchas90percent多达百分之九十9、thenumberof...……的数量anumberof许多，大量10、destroy(v).破坏，毁掉11、cutdowntrees砍伐树木1.Whattroublehasthemonarchbutterflyfaced?Itspopulationhascrashedbyasmuchas90percent.2.Whatisthemainreasonforthattrouble?cutdowntreesusechemicalskilltheplantsthatmonarchcaterpillarseathumanactivityReadpara4andanswerthequestions.he.Humans___________________trees.f.The_____________________wheremonarchscanbefoundisdestroyed.g.Humansusechemicalsthat________________thatmonarchcaterpillarseat.h.Themonarchbutterfly’spopulation______________inthelastfewyears.cutdownkilltheplantshascrashednaturalenvironmentfegCompletethesentencesandthe“cause-effect”flowchart.(Para4)(五）Theresearchonthemonarch’sbehaviourhashoweverledtoagreaterawarenessofthiscreature.不过，对黑脉金斑蝶行为的研究也使得人们对这种生物有了更多的了解。Peoplehavebeenworkingtogethertorecorditsmigrationandmakesurethatthereareenoughplantsforittofeedon.人们已经在共同努力，记录它的迁徙，并确保它有足够的食物。Ifthisworks,theremaycomeatimewhenthenumberofmonarchbutterfliesincreasesonceagain.如果这些努力产生效果，黑脉金斑蝶的数量在未来有可能再次回升。Themoreweknowaboutthislovelycreature,thegreaterthechanceitwillsurviveandkeepitsplaceinthenaturalworldforalongtimetocome.我们对这种迷人的生物了解越多，它们在自然界中得以长久生存并保持其位置的可能性就越大。

1、theresearchon对……的研究2、leadto导致，造成3、awarenessn.认识，意识4、creature/ˈkriːtʃə/n.生物，动物5、makesurethat...保证/确保……6、feedon以……为食；以……为生7、onceagain(=oncemore)再次AfterReadingTask1:Lookthroughthepassageandfindtheanswer.1.What'sthetexttypeofthepassage?A.argumentation(议论文)B.narration（记叙文）C.exposition（说明文）Paragraph1Definition（定义）/explanationaboutmigrationParagraph2-3IntroduceMonach'smigrationParagraph4Monarch'stroubleand

causesParagraph5Measurestoprotectmonarchbutterflytask2：what’sthemainideasofeachpara?1.Whatisthemainideaofthepassage?A.Themonarchbutterflies'migration.B.Thereasonsformonarch’smigration.C