高中英语 牛津译林Book3Unit1 Book3unit1第3课时

The

Amazon

rainforest

:A

natural

treasure(

period2

)安徽省歙县中学潘颖SharingvideoaboutRainforest

Dubavideoclipabout“Rainforest”EvaluationFormStructureGrammarWordingGroup1Group2Group3Group4（perfectscore

）StellaSeanEvaluationFormStructureGrammarWordingGroup1Group2Group3Group4（perfectscore

）

FirstDraft

SecondDraftThemainreasonwhythejunglehassostrongthepowertoimpacttheearthisthatitcoversabout14millionsquarekilometers,about58timesthesizeoftheUK.(Para2Line5-9)Withanareaofaround6millionsquarekilometers,theAmazonrainforestis

morethanhalfthesizeof

China.TheAmazonriver,fromwhichtherainforestgetsitsname,iscloseto6,400kilometersinlength---roughly100kilometerslongerthantheYangtzeRiver.

Howtopresentstatisticseffectively?

threetimesaslong/largeas...morethan/longerthan/largerthan...threetimesthesize/length/width/heightof...makingcomparisons（familiarplacesandobjects)Buthumans

Theyaresosmart

Sosmart

……

Humans

Sosmart

Humans

Makingair

That’llbefuntowatch.

11ironicWhatdoyouthinkofthetwosentences?NatureinthebalanceWeshouldstrikeabalanceofhumanandnature.Wehumansshouldliveinharmonywithnature.

Unit1Deforestation15

Forestscoverabout30%oftheplanet,andtheecosystemstheycreateplayanimportantroleinsupportinglifeonearth.Butdeforestationisclearingearth’sforestonalargescale.Andatthepresentrateofdestruction,theworld’srainforestcancompletelydisappearwithin100years.

What

causesdeforestation?Thebiggestdriverofdeforestationisagriculture.Farmerscutdowntreesinordertoplantcropslikesoybeans,palmtreesandcocoa,ortomakeroomtoraisecattleforbeef.Loggingoperations(伐木)whichprovidetheworld’swoodandpaperproductsalsocutcountlesstreeseachyear.Forestsarealsodestroyedasaresultofgrowingpopulationandcities,aspeopleneedlandtoliveandwork.

DeforestationFurtherreadingDeforestation

Whyshouldwecareaboutdeforestation?

Greenhousegasesarebelievedtobeoneofcausesofclimatechange.Anddeforestationinfluencestheamountofgreenhousegasesintheatmosphere(大气层).First,whentreesarecutdown,theyletoutthecarbontheyarestoringintotheatmosphere.Second,treesplayanimportantroleinabsorbing(吸收)thegreenhousegasesthatincreaseglobalwarming.Fewerforestsmeanlargeramountsofgreenhousegasesenteringtheatmosphere,andincreasedspeedandseverityofglobalwarming.Forestsarehometoover80%oftheplantsandanimalsthatliveonland.Butdeforestationdestroysthesehabitats,reducingbiodiversity.Somethinkthat4000to6000rainforestspeciesdieouteachyear.Thisalsoimpactsmorethan2billionpeoplewhodependonforestsassourcesoffoodandshelter.

Theeffectsofdeforestationareserious,butnotunchangeable.…Furtherreading·Whydoesdeforestationhappen?·Whataretheconsequencesofdeforestation?The

effectsofdeforestationareserious,butnotunchangeable.…·Whatmightbetalkedaboutintheparagraphfollowingthelastsentence?

ReadandthinkCauses---Consequences

Effortssuchasmanagingforestresources,gettingridofclear-cuttingandplantingnewtreestoreplacetheseremoved,arealreadybeingmadetoreducedeforestation’senvironmentalimpactonourplanet.Andwhilesomeplantandanimalspeciesaregoneforever,fightingdeforestationcanhelppreventfurtherlossofbiodiversity.---Control2Consequences1Causes3ControlDeforesationagricultureloggingoperationgrowingurbanexpansiongreenhousegasemissionglobalwarmingmanagingforestresourcesgettingridofclear-cuttingplantingnewtreesTheAmazon

rainforest:AnaturaltreasureTheAmazonrainforest:

anaturaltreasure

Para1.IntroductiontotheAmazonrainforest.Para2.Basicinformationabouttherainforest.Para3.

Para4.

Para5.

Plantbiodiversityandlevelsoftherainforest.Animalbiodiversityandthefoodchain.Therainforest’svaluetothehumanraceandthreatstotherainforest.Treasure

NatureHomework