Unit1NatureinthebalanceReading课件高中英语牛津译林版（2020）2

Unit1Reading1TheAmazonrainforest:anaturaltreasureWhatdoyouknowabouttheAmazonrainforest?

BrainstormingLocation?Species?Climate?Naturalresources?TheAmazonrainforest:

anaturaltreasureWhatwillbetalkedaboutjudgingfromthetitleandthepicture?

Step1Pre-reading:Prediction

Step2

FirstReading(Mainidea)Para.3:Para.4:

______biodiversity;______oftherainforestAnimal__________;food______Therainforest’s______tothehumanraceand

________totherainforest.Para.1:___________totheAmazonrainforestPara.2:_________________abouttherainforestPara5:Plants

biodiversitylevelschainvaluethreatsIntroductionBasicinformation

A.B.C.D.√Step2FirstReading(Structure)Step3.CloseReading(

Para.1-2)

BasicinformationabouttheAmazonrainforest

●Geographicposition:●Name:●ThesignificanceoftheAmazonrainforestandtheAmazonriver:getsitsnamefromtheAmazonriver

ontheSouth

Americancontinent

givethisareatherichestbiodiversityontheearthStep4.CloseReading(

Para.2)

86million6,40040,0001,30040020%17%

Ofthe390,000plantspeciesknowntous,morethan40,000canbefoundintheAmazon.Thistallandancientbrazilnuttreeproducesnutsthatwecaneat;thesewaterliliesarebigenoughtoliedownon.Theforest’sdifferentlevelssupportanunbelievablevarietyofwildlife.Atthebottom,thereisasystemofrootsbeneaththeground.Abovethatisthemassofleaflitteronthedarkforestfloor.Thenextlevelismadeupofshorterplantswithlargeleaves.Thentherearethetoweringancienthardwoods,andfinallythetopsofthetallesttreesmanymetresabovetheground.Eachleveloftheforestformsitsownlittleworld,hometodifferentkindsoflivingthings.

CloseReading(

Para.3)

Therainforest’sdifferentlevels.asystemofrootsEachleveloftheforestformsitsownlittleworld,hometodifferentkindsoflivingthings.thetopsofthetallesttreesthemassofleaflittershorterplantswithlargeleavestoweringancienthardwoodsPara.3Therainforest’sdifferentlevels.Function

Morethan1,300speciesofbirdsandover400speciesofmammalshideamongthejungle’splantlife.Thisjaguarisoneexample.Ithasayellowish-browncoatwithblackspots.Whileasignificantnumberofjaguarssurvivehere,theyareonlyoneelementofthisforest’sfoodchain.Theyfeedonatleast87species,includingfrogs.Thesefrogs,inturn,feedoninsectswhicheatleavesandfruit.Whenajaguardies,atinyarmyofmicroorganismshelpsbreakdownitsbodyandreturnthenutrientstotheearth.

CloseReading(

Para.4)

Thefoodchain.

JaguarsInsectsAtleast87species,includingfrogsLeavesandfruitMicroorganismsfeedon

breakdownfeedon

feedon

Thefoodchain

nutrient“Lungsoftheplanet”

atreasurehouseofspeciesthatcanbeusedforfoodormedicine

Humanactivities—whatthreatsitfaces?

dueto

CloseReading(

Para.5)

ValueoftheAmazonrainforestBasicinformationlocationandsizeName:gettingitsnamefrom(1)________________richest(2)____________AmazonrainforestAnimalsmorethan1,300speciesofbirdsandover400speciesof(5)__________elementsofthisforest’s(6)___________Plantsmorethan40,000(3)______________different(4)_____

oftheforestSignificancefixcarbonandproducing(7)________havingspeciesusedfor(8)__________________

Dangerthemajordanger:(9)_________________disappearingduetohumanactivitiessuchas(10)____________andcattlefarmingtheAmazonriverbiodiversityplantspecieslevelsmammalsfoodchainoxygenfoodormedicineus/humanbeingsagricultureStep5Summary1.WhyistheAmazonrainforestanaturaltreasure?thelargestrainforestintheworldmaintainingthefinebalanceoftheEarth’secosystem(Para.1)givingthisareatherichesbiodiversityontheEarth(Para.2)knownasthe“lungsoftheplanet”atreasurehouseofspeciesthatcanbeusedforfoodandmedicine(Para.5)Step6Furtherreading2.Whataretheauthor’swritingpurposes?TointroducethesignificanceandvalueoftheAmazonrainforest.ToappealtothereaderstotakeactiontoprotecttheAmazonrainforest.WhatmeasurescanbetakentoprotecttheAmazonrainforest?Step7DiscussionFirstofall,lawsshouldbemadetoseverelypunishwhoeverdestroystherainforest,andthedeforestationofitshouldbecombinedwithartificialafforestation.Secondly,theeconomicstructureshouldbeadjustedsothatcountriescangetridoftheexcessivedependenceonitforeconomicdevelopment.Thirdly,environmentalawarenesseducationshouldbestrengthenedtomakecitizensrealizetheseriousconsequencesofrainforestdestructionandthesignificanceofprotectingtherainforest.Thegovernmentshouldalsotakeeffectivemeasurestopreventtheforestfirefromhappening.Post-readingWhat

If

We

Lost

The

Amazon

Rainforest

?

Post-reading

watchthevideoandreadthefollowingtableWhytoprotecttheAmazonforestWhyisitendangeredHowtoprotecttheAmazonforestinourdailylifecreates20%oftheEarth’soxygen;hometo30%oftheplanet’sspecies;holdsthesecretstotreatingsomeofourmostdeadlydiseases;store86billiontonsofcarbonthatwouldotherwisebepollutingouratmosphere…………..massiveforestfires;Humanactivities:farming/mining/loggingdon’teatasmuchbeef(processedbeefproducts)reducetheamountofpaperweusechooserenewableenergyproductswheneveryoucan

Groupwork:

DiscussandwriteanarticlefortheschoolnewspapercallingforeveryonetoprotecttheAmazonforestStatethe______________oftheprotection;Explainwhatposesa_________totheAmazonforest;Comeupwith__________toprotectit;importance

threat

ways

Presentation:

TheAmazonforestisofgreatimportancetous.___________________________________________________________________________________________________________________________________________________________________________________________________________________________Humanactivitiesaswellasforestfi