Unit1

Natureinthebalance

Reading-languagepoints

PresentationLead-in:EnjoyavideoTheAmazonrainforest:anaturaltreasureWelcometothejungle,ahugeseaofgreenalivewiththesoundsofanimals.ThisistheAmazonrainforest.Asthelargestrainforestintheworld,itplaysasignificantroleinmaintainingthefinebalanceoftheEarth'secosystem.歡迎來到叢林，這是一片綠色的海洋，處處可聞各種動物的聲音。這里是亞馬孫雨林。作為世界上最大的雨林，它在維系地球生態(tài)系統(tǒng)的微妙平衡上扮演著舉足輕重的角色。ahugeseaof

大量的，許多alivewith

充滿著，到處都是playasignificantrolein...在...方面起著重要的作用Wemustfaceahugeseaoftroublesandbearthem.我們必須面對大量的困難并忍受它們。重點(diǎn)短語1．________________大量的，大片的2．________________充滿，到處都是(活的或動的東西)3．__________________________________

在……中起著重要的作用;在……中扮演重要角色4．

__________________________________

保持……的微妙平衡ahugeseaofalivewithplayasignificantrole/partinmaintainthefinebalanceof...TheAmazonrainforestcrossesintoeightcountries,includingBrazilandPeru,andoneoverseasregionofFrance,allontheSouthAmericancontinent.Withanareaofaround6millionsquarekilometres,theAmazonrainforestismorethanhalfthesizeofChina.亞馬孫雨林穿過包括巴西、秘魯在內(nèi)的八個國家，以及一塊法國的海外領(lǐng)地，都位于南美洲大陸。亞馬孫雨林的面積約為600萬平方千米，比中國國土面積的一半還要大。crossinto穿過，橫穿ThesepeoplecameinanticipationofcrossingintoMexico.這些人來到這里，希望能進(jìn)入墨西哥。TheAmazonRiver,fromwhichtherainforestgetsitsname,iscloseto6,400kilometresinlength-roughly100kilometreslongerthantheYangtzeRiver.亞馬孫雨林得名于亞馬孫河，亞馬孫河長約6,400千米，比長江還長大約100千米。becloseto靠近；接近.Ourvillageisclosetotherailwaystation.我們村挨近火車站。Onitsjourneyfromthemountainstotheocean,theriversupportsmanydifferentecosystems.TheygivethisareatherichestbiodiversityontheEarth:oneintenknownspeciesintheworldcanbefoundhere.這條河從高山流向海洋，沿途維系著多種不同的生態(tài)系統(tǒng)。它們賦予這片區(qū)域地球上最豐富的生物多樣性：全世界十分之一的已知物種，都可以在這里找到。oneinten十分之一=oneoutoften.Oneintensoldiersonbothsideswerewoundedorkilled.雙方十分之一的士兵受傷或死亡。Intensivereading:Readcarefullyandanswerquestions

Para2Basicinformationabouttherainforest_________:8countriesandoneoverseasregion_________:around6millionsquarekilometresofforest_________:about6,400kminlengthlengthsizelocationIntensivereading:Readcarefullyandanswerquestions

Para2location:TheAmazonrainforestcrossesintoeightcountries,includingBrazilandPeru,andoneoverseasregionofFrance,allontheSouthAmericancontinent.橫越巴西(占森林60%面積)、哥倫比亞、秘魯、委內(nèi)瑞拉、厄瓜多爾、玻利維亞、圭亞那、蘇里南、法國（法屬圭亞那），占世界雨林面積的一半，全球森林面積的20%，是全球最大及物種最多的熱帶雨林。亞馬孫雨林被人們稱為“地球之肺”和“綠色心臟”。asystemofrootsTheforest’sdifferentlevelssupportanunbelievablevarietyofwildlife.thetopsofthetallesttreesthemassofleaflittershorterplantswithlargeleavestoweringancienthardwoodsPara.3:Plants?Thereare_______levelsofplantspecies.5brazilnutwaterlilyOfthe390,000plantspeciesknowntous,morethan40,000canbefoundintheAmazon.Thistallandancientbrazilnuttreeproducesnutsthatwecaneat;thesewaterliliesarebigenoughtoliedownon.在人類已知的390,000種植物物種中，在亞馬孫可以找到40,000多種。這棵高大、古老的巴西堅(jiān)果樹結(jié)出的堅(jiān)果我們可以食用；這些睡蓮（葉片）大到可以躺在上面。beadj./adv.enoughtodo足夠...去做....Heisoldenoughtogotoschool.他足夠大去上學(xué)了。Theforest'sdifferentlevelssupportanunbelievablevarietyofwildlife.Atthebottom,thereisasystemofrootsbeneaththeground.Abovethatisthemassofleaflitteronthedarkforestfloor.雨林的不同層次養(yǎng)活的野生動物種類多到難以置信。最底層是地下的根系。往上是陰暗森林地表厚實(shí)的落葉層。avarietyof各種各樣的.Theschoolprovidesstudentswithavarietyoffacilities.這個學(xué)校給學(xué)生提供各種各樣的設(shè)施。Thenextlevelismadeupofshorterplantswithlargeleaves.Thentherearethetoweringancienthardwoods,andfinallythetopsofthetallesttreesmanymetresabovetheground.Eachleveloftheforestformsitsownlittleworld,hometodifferentkindsoflivingthings.再往上一層由低矮的闊葉植物組成。然后是高聳、古老的闊葉樹，最后是那些離地?cái)?shù)米之高的大樹的樹冠。雨林的每一層都自成一個小世界，成為各種生物的家園。bemadeupof由......組成=becomposedof=consistof.Animalbodiesaremadeupofcells.動物身體是由細(xì)胞組成的。jaguarsinsectsatleast87species,includingfrogsleavesandfruitmicroorganismsfeedonbreakdownfeedon

eat

Whileasignificantnumberofjaguarssurvivehere,theyareonlyoneelementofthisforest’sfoodchain.

nutrients

Para.4:FoodchainreturnMorethan1,300speciesofbirdsandover400speciesofmammalshideamongthejungle'splantlife.Thisjaguarisoneexample.Ithasayellowish-browncoatwithblackspots.Whileasignificantnumberofjaguarssurvivehere,theyareonlyoneelementofthisforest’sfoodchain.1,300多種鳥和400多種哺乳動物藏身于這片叢林的植被中。這只美洲豹就是個例子。它黃棕色的皮毛上遍布著黑點(diǎn)。盡管這里生存著數(shù)量可觀的美洲豹，但它們僅僅是雨林食物鏈上的一環(huán)。asignificantnumberof...大量的thenumberof.........的數(shù)量Theyfeedonatleast87species,includingfrogs.Thesefrogs,inturn,feedoninsectswhicheatleavesandfruit.Whenajaguardies,atinyarmyofmicroorganismshelpsbreakdownitsbodyandreturnthenutrientstotheearth.它們捕食的物種至少有87種，其中包括青蛙。相應(yīng)地，這些青蛙的食物，是以樹葉和水果為食的昆蟲。美洲豹死后，一小支微生物軍隊(duì)會助力其尸體的分解，讓營養(yǎng)素重回土壤之中。feedon...以......為食inturn相應(yīng)地antinyarmyof一小群breakdown分解.Anarmyofantsmatchedacrossthepath.一大群螞蟻浩浩蕩蕩地穿過小路。Para.5:Significanceanddanger1.WhydoestheAmazonrainforestplayasignificantroleinmaintainingthebalanceoftheEarth'secosystem?the“l(fā)ungsoftheplanet”

atreasurehouseofspeciesforfoodandmedicinematerials2.What'sthemajordangerintheAmazonrainforest?What'sthesituationoftheAmazonrainforestoverthepast50years?majordanger:us/humanbeingsAbout17%oftherainforesthasdisappearedduetohumanactivities.TheAmazonrainforestbreatheslifeintotheplanetbyfixingcarbonandproducingover20percentofalltheEarth'soxygen.Thus,itisoftenknownasthe“l(fā)ungsoftheplanet".亞馬孫雨林通過固定碳（二氧化碳），并生成占全球總量20％以上的氧氣，來為地球注入活力。因此，它也常常被稱作“地球之肺”。breathelifeinto給......帶來起色，注入活力beknownas...被稱為......，被認(rèn)為是......beknownfor...因......而聞名.Mrs.brownisknownforherhospitality.布朗夫人以其好客聞名。Moreover,theAmazonrainforestisatreasurehouseofspeciesthatcanbeusedforfoodormedicine.Yetthereisonemajordangertotheseirreplaceableplantsandanimals:us.Overthepast50years,about17percentoftherainforesthasdisappearedduetohumanactivitiessuchasagricultureandcattiefarming.此外，亞馬孫雨林還是食用物種和藥用物種的寶庫。然而，這些無可取代的動植物面臨的一個主要威脅就是：我們。在過去的50年里，由于農(nóng)耕和養(yǎng)牛等人類活動，17％的雨林已經(jīng)消失了。beusedfor被用來做某事beusedas被用作...irreplaceableadj.無可替代的replaceableadj.可替代的

replacev.替代dueto由于，因?yàn)锳stheimpactofhumanactivitiescontinuestogrowandthelistofspeciesindangerofextinctionbecomeslonger,weareleftwithaquestion:canweaffordtodamagethe“l(fā)ungsoftheplanet”?隨著人類活動影響的不斷增加，瀕危物種的名單越來越長，這留給我們一個問題：我們能承擔(dān)得起損害“地球之肺”的后果嗎？indangerofextinction處在滅絕的危險中affordtodosth負(fù)擔(dān)得起做某事.Icannotaffordtorunacaronmysalary.以我的薪水我是養(yǎng)不起汽車的。BuildyourlanguageTheAmazonrainforestishometoagreat(1)

ofplantlife;however,itssoilissurprisinglypoorinnutrients.Infact,thesoilintheregioncannotsupport(2)

formorethanafewyears.Ifascientistisshownareportlistingthenutrientsofthatsoil,heorshewillprobablythinkthatonlydesertplantscan(3)

init!Thenwhyisthesoilsopoorinnutrients?Foronething,therainyseasonhasa(n)(4)

onthesoil.Intherainyseason,thewaterlevelcanrisetoashighas12metres.Whenthewatergoesaway,ittakesawaythenutrientsinthesoil.Foranotherthing,B1varietyagriculturesurviveimpact(5)

theAmazon’shotclimate,itisdifficultforthesoiltobuildupenoughnutrients.Deadplantsandanimals(6)______________morequickly.Thenutrientsaresoontakeninbytherootsoftheplantsdeep(7)_________theground.Asaresult,mostoftheforest’snutrientsarelockedupintheplantsthemselves,(8)________allowingthemtogrowatanunbelievablespeed.

duetoarebrokendownbeneaththus1對…有害2砍伐樹木3發(fā)出警報4找到某事的解決方法5因?yàn)?account)6自然奇跡7種類繁多的野生生物doharm/damagetosthcutdowntreessoundthealarmfindthesolutiontosthonaccountofnaturalwondersawiderangeofwildlifeImportantwords&phrases8充滿，到處都是某物9在某事中起重要作用10保持生態(tài)系統(tǒng)完美平衡11…的面積12超過中國面積的一半13得名于…bealivewithsthplayasignificantroleinmaintainthefinebalanceoftheecosystemanareaof…morethanhalfthesizeofChinageton