2021学年高中英语Unit5IntothewildPeriod2Understandingideas学案一外研版必修一

Unit5Intothewild

Period2Understandingideas

/学案设计（一）一♦

■学习目标

1.Togetthemainideaofthetextbyskimmingthekeywords,andaccurately

judgethesourceofthearticleaccordingtothecontentofthetext.

2.Tofindoutthemaindetailsquicklyinthetextthroughintensive

reading,andclearthecausallogicofthetext.

3.Tolearnthebackground,purposeandwayofthemonarchs

migration,understandtheinfluenceofhumanbehaviorontheirsurvival,anddeepen

thecognitionofthetextandthethemeoftheunit.

■■■■自主预习

MatchthewordswiththeirEnglishexplanations.

1.annuala.theplacewheresb/sthis

2.migrateb.tomovefromonepartoftheworldtoanotheraccordingtothe

season

3.seekc.tofindthesize,quantity,etc.ofsth

4.determined.totrytofindorobtainsth

5.managee.happeningordoneonceeveryyear

6.measuref.tofixsthordecide

7.positiong.tobesuccessfulindoingsth

8.eventuallyh.attheendofaperiodoftimeoraseriesofevents

9.solutioni.tocontinuetoliveorexistespecial1yaftercomingclose

todying

10.mysteryj.tofallviolently

11.amazingk.todamagesthsobadlythatitcannotbeused

12.crash1.theanswertoaproblem

13.destroym.extremelysurprising

14.creaturen.sthstrangeornotknownthathasnotyetbeenexplainedor

understood

15.surviveo.anylargeorsmal1livingthingthatcanmoveindependently

.果堂探究

一、Beforereading

Task:Watchavideoandsharefeelings.

二、Whilereading

Task1Readthepassagequicklyandanswerthequestion.

Whereareyoumostlikelytofindthepassage?

a.Inascientificresearchpaperaboutthemonarchbutterflysmigration.

b.Inapopularnaturemagazineintroducingthemonarchbutterfly.

c.InatravelleafletencouragingpeopletovisitNorthAmerica.

Task2Matchthemainideaofeachparagraphandthenanalysethestructure

ofthispassage.

Paragraph1a.Themonarchsmigration.

Paragraph2b.Thedefinitionofmigration.

Paragraph3c.Theeffectsoftheresearch.

Paragraph4d.Howdoesthemonarchfinishitsmigration?

Paragraph5e.Whysthenumberofthemonarchfalling?

Task3Readthepassageparagraphbyparagraphtoanswerthefollowing

questions.

①Whydomanyanimalsmigrate?

②Whatmysteryhavethescientistsfoundout?

③Howdoesthemonarchdeterminethewaytogo?

©Whathashappenedtothemonarchinthepastfewyearsandhowdidithappen?

⑤Whatsthesignificanceoftheresearchonthemonarch?

Task4ReadthepassageagainandfinishActivity4onPage52.

Task5Languagefocus

1.Themoreweknowaboutthislovelycreature,thegreaterthechanceitwill

survive...

我们对这种可爱的生物了解的越多，它生存的机会就越大。

【知识链接】

本句使用了“the+比较级,the+比较级”句型，表示“越……就越……”。

【实战演练】翻译句子

①你越细心,犯的错误就越少。

②你越努力,取得的进步就越大。

2.Thesetwopiecesofinformation-thetimeofdayandthepointwherethesun

isinthesky一allowthebutterflytodeterminethewaytogo.

一天中的时间以及太阳在空中所处的位置，这两条信息可以帮助黑脉金斑蝶决定它需要走

哪条路。

【知识链接】

(1)句子中的wherethesunisinthesky为关系副词where引导的定语从句，修饰先行

词point,where在从句中用作地点状语。

(2)determine匕决定

变成名词：determination意思是决心；

变成形容词：determined意思是坚决的

【实战演练】单句语法填空

©ThisistheschoolIspentmyhighschoollife.

②ThisistheschooliscalledPanyangMiddleSchool.

③ThisistheschoolIwillintroduce.

④他决定学日语。_

⑤我决心要获得成功。_

⑥aleaderwithcourageanddetermination

三、Afterreading

Task1Designamindmapforthepassage.

Task2Chailengeyourself!

Writeasummarywiththemindmap.

Requirements:

1.Useyourownwording.

2.Expressthemainideas.

3.Keepthesummaryshort（about1/3or1/4aslongastheoriginalone）.

Task3Groupdiscussion

Whatelsecanpeopledotohelpprotectthemonarchbutterfly?

■■・■■■核心素养专练

k>Canyoudescribehowmonarchbutterfliesmigrateeveryautumn?

二、Canyoudescribetheresearchonthemonarchbutterfly?

三、Haveyougotarightattitudetothebehaviorofwildanimalsnow?

四、ReadthearticleBirdmigrationandfillintheblanks.

Birdmigration

Themainreasonformigrationormovementisfood;forexample,somebirdsmay

choosenottomigrateiftheyarefedthroughthecoldmonths.Changesintheday

lengtharesignalsformigrationandrelatetothephysicalchangesinthe

birds.Birdswillalsodisplayrestlessnessandincreasetheirfatdeposition（沉

积）.Duringshorterdaysinthefall,birdswillreturntowarmerareaswherethey

findadequatefoodsupply.

Manysmallerinsect-eatingbirdsmigratelargedistancesusuallyatnight.They

mayfeedforafewdaysbeforecontinuingtheircourseoftravel.Anadvantagefor

nightmigratingisthatitminimizesthethreatofpredators（食肉动物），allowing

thebirdstofeedduringthedayandavoidoverheating.

Themigrationforthesebirdsisbasedonanumberofdifferentsenses.Many

birdsusethesunasacompass.Theabilitytodetectmagneticfield（磁场），useof

visuallandmarks,aswellastheirsenseofsmellareusedtohelptravelduring

migration.Birdmigrationisastronggeneticfactorintermsoftimingand

route,whichcanbeinfluencedbytemperature.Migratorybirdsmayusetwotoolsto

findtheirdestinations;innatecapability（geneticallyprogrammed）andexperience.A

first-timermigrant（候鸟）fliesaccordingtotheEarthsmagneticfie]d,butdoes

notknowhowfaritwilltakeuntilitgrowsaccustomedtothejourneyandisable

touseitsothercapabilities.Withexperienceitlearnsvariouslandmarksoften

called“mapping”.

MigrationismainlyseenintheNorthernHemisphereandlessobviousinthe

SouthernHemisphere.Thisisduetothelackofsignificantweatherchangesandthe

continualsupplyoffoodforthebirds.Acommonpatterninmigrationinvolves

flyingnorthinthespringtobread（繁殖）duringthesummerandtravelingtothe

southinthefal1intowarmerregions.Notwospeciesfollowtheexactroutefrom

beginningtoend.Migrationsnarrowintooneormorepreferredroutesoroften

called“flyways”.Flywaysmainlyfollowcoasts,sometimesrivers,ormountain

ranges.TherearefourmajorNorthAmericanflyways;theAtlantic,the

Mississippi,theCentralandthePacificFlyways.Theflywaysarenotdefinedin

theirboundariesandattimesmaybecombinedintoone.

Infact,longdistancemigrantsmoveawayfromeachotherasyoungbirdsand

formattachmentstopotentialbreedingandwinteringsites.Oncethesite

attachmentismade,birdsshowhighsite-faith,visitingthesamesitesyearafter

year.Youwi11wanttoensureyournestingboxesarecleanedoutandavailablewhen

thesebirdsreturntokeepthecyclegoingforthesemigratingspecies.

Birdmigration

PassageoutlineSupportingdetails

OBesides1._________,migrationhassomethingtodowith

Whydobirdsmigrate?

birdsphysicalchangesanddaylengthchanges.

◊Nightmigratinghelpsminimizethe2._________ofbeing

Whatarethe

threatenedbypredators.

advantagesofnight

migrating?ONightmigratingallowsbirdstofeedenoughduringthe

daywithoutoverheating.

◊Thesun,magneticfield,visuallandmarksandthesenseof

smellareall4._________forbirdstomigrate.

OEnvironmentalchangesareconnectedwithbirdstiming

3._________dobirds

androute.

migrate?◊Notonlymagneticfieldbutalsosomeothercapabilities

and5._________relatetoafirst-timermigrants

flying.

OMigrationmainlytakesplaceinthe6.

WheredobirdsHemisphere.

migrate?OWithfourmajorflywaysbirdsmainlyfly7.

coasts,rivers,ormountainranges.

OBirdsare9._________totheirsiteattachmentvery

What8._________can

much.

youdrawfromthe

OYoumustmakesurethecleanboxesare10.

birdmigration?

beforethebirdscomeback.

参考答案

自主预习

1.e2.b3.d4.f5.g6.c7.a8.h9.110.n11.m12.j13.k14.o

15.i

课堂探究

二、Task1:a

Task2:Paragraph1:b;Paragraph2:a;Paragraph3:d;Paragraph4:e;Paragraph5:c

Task3:®Theymigratetofindfood,seekapartner,orinsearchofwarmer

weather.

②Thescientistshavefoundouthowthemonarchbutterflymanagestoreachthe

placeswhereitwillspendthewinter.

③Themonarchisabletotellthetimeofdayandthepointwherethesunis

inthesky.

©Becauseofhumanactivitiesthenumberofthemonarchhascrashedbyasmuch

as90percentinthelastfewyears.

⑤Theresearchonthemonarchsbehaviorhasledtoagreaterawarenessofit

andpeoplehavebeenworkingtogethertorecorditsmigrationandmakesurethere

areenoughplantsforittofeedon.

Task4:1.thetimeofday2.thewaytogo3.thepositionofthesun4.the

placewhereitwillspendthewinter

Ai

5.cutdown6.place7.killtheplants8.hascrashedbyasmuchas90per

cent

h

Task5:1.①Themorecarefulyouare,thefewermistakesyouwi11make.

②Theharderyouwork,thegreaterprogressyouwillmake.

2.①where②which③which

@HedeterminedtolearnJapanese.

⑤Iamdeterminedtobesuccessful.

⑥一位果敢的领导

三、Task1.

TheMonarchs

Journey

Thedefinitionofmigration

Backgroundintroduction

Themonarch'smigration-long&difficult