Nature in the balance 課件教學(xué)講解

Unit1Natureinthebalance【版本：譯林冊(cè)別：必修三】Welcometotheunit—Reading目錄頁contentsPre-readingⅠPost-readingⅣFastreadingⅡIntensivereadingⅢⅠPre-readingPre-reading上文兩句出自德國哲學(xué)家、革命導(dǎo)師弗里德里?！ざ鞲袼沟摹秳趧?dòng)在從猿到人轉(zhuǎn)變過程中的作用》一文，意在說明人類與自然界要和諧共處。Letusnot,however,flatterourselvesovermuchonaccountofourhumanvictoriesovernature.Foreachsuchvictorynaturetakesitsrevengeonus.

但是我們不要過分陶醉于我們?nèi)祟悓?duì)自然界的勝利。對(duì)于每一次這樣的勝利,自然界都對(duì)我們進(jìn)行報(bào)復(fù)。

Song1:HealtheWorld(byMichaelJackson)

Pre-reading:Welcometotheunit(P1)

Song2:Theearthisouronlyhome.(fromP1)

Questions:①Whatisthemessageofthetwosongs?②Whatcanyoudotohelpprotecttheenvironment?ListentothesongsPre-reading:ImportantphrasesinWelcomethehumanrace_________doharm(to)___________cutdown_____________soundthealarm_____________bethankfulfor

sth____________findthesolution(tosth)_________對(duì)…有害人類砍伐，砍倒發(fā)出警報(bào)對(duì)…感激；為…慶幸找到解決…的方法ⅡFastreadingTheworldweliveinisfullofnaturalwonders.TodaywecometoknowtheAmazonrainforest,whichishometoawiderangeofwildlife.Fastreading:P2-3WhenitcomestotheAmazonrainforest,whereisit?whatplantsoranimalsdoyouknowabout?doyouknowthegreatfirein2019there?Freetalk

TheWorldWildlifeFoundation(WWF)

says

theworld'slargestrainforestcontainsmillionsofspeciesofplantsandanimals.Manyofthemarestillunknown.Amongthebestknownanimalsarejaguars,eagles,pinkriverdolphins,parrots,largesnakesandmanybutterflies.Morethan30millionpeople,including350indigenous

andethnicgroups,liveintheAmazonareaanddependontheforestsforfoodandshelter.What'sintheAmazon?Thefiresnotonlydestroypartsofthecarbon-absorbingforests,buttheyreleasemillionsofmetrictonsofcarbonintotheair.TheAmazonrainforestalsoisimportanttorainfallinthearea.Deforestationmakesrainslessfrequent,extendingthedryseason.If20to25percentoftheforestweredestroyed,thedryseasonwouldexpand.Thatwouldmeantheareawouldnolongerbearainforest,butatropicalsavannah,oranareawithgrasslandsandfewtrees.Unfortunately,wearealreadyseeingsignsoftheAmazonturningintoasavannah.Whatdothefiresmeantotheworld'sclimate?ThecurrentfiresintheAmazonarenotwildfires.Theyaremostlysetillegallybypeoplewhoareclearingtheforesttoraisecattleandcrops.Peopleclearthelandbycuttingdownthetreesduringtherainyseason,lettingthetreesdryoutandburningthemduringthedryseason.Fullyclearingthethickforestforagriculturalusecantakeseveralyearsofcuttingandburning.Whatiscausingthefires?Readthedocumentaryscriptandwritethemainideaofeachparagraph.Para.1:IntroductiontotheAmazonrainforestPara.2:BasicinformationabouttherainforestPara.3:_______________________________________Para.4:_______________________________________Para.5:_______________________________________FastreadingItsabundantplantspeciesAwiderangeofanimalspeciesandanunusualexample-jaguarAppealtopeopletopreservetherainforestIntensivereadingⅢ1.Howtounderstandthesentence“ahugeseaofgreenalivewiththesoundsofanimals”?aseaof:_________________________________alivewith:________________________________這是一片綠色的海洋，到處都可以聽到動(dòng)物發(fā)出的聲音。Intensivereading:Readcarefullyandanswerquestions

Para1大量的，大片的充滿，到處都是（活的或動(dòng)的東西）2.WhatisthefunctionoftheAmazonrainforest?ItplaysasignificantroleinmaintainingthefinebalanceoftheEarth’secosystem.Intensivereading:Readcarefullyandanswerquestions

Para1Intensivereading:ecosystemplantsanimalswaterpeopleclimatesoilairAllthesefactorscontributetotherichestbiodiversity

ontheEarth.Intensivereading:Readcarefullyandanswerquestions

Para2-586million64004000130040020%17%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”。Intensivereading:Readcarefullyandanswerquestions

Para2size:Withanareaofaround6millionsquarekilometres,theAmazonrainforestismorethanhalfthesizeofChina.=Chinaismorethantwice__________________theAmazonrainforest.asbig/largeasIntensivereading:Readcarefullyandanswerquestions

Para2length:TheAmazonRiver,fromwhichtherainforestgetsitsname,iscloseto6,400kilometresinlength—roughy100kilometreslongerthantheYangtzeRiver.Onitsjourneyfromthemountainstotheocean,theriversupportsmanydifferentecosystems.Intensivereading:P5Intensivereading:Readcarefullyandanswerquestions

Para2TheygivetheAmazonrainforesttherichestb_______________ontheEarth:oneintenknowns____________intheworldcanbefoundhere.iodiversitypeciesThey:_______________________________________

_______________________________________

thespecificlocation,theimpressivesizeandlengthIntensivereading:Readcarefullyandanswerquestions

Para2Ofthe390,000plantsspeciesknowntous,morethan40,000canbefoundintheAmazon…Theforest’sdifferentlevelsofplantspeciessupportanu_________varietyofwildlife.nbelievableIntensivereading:Readcarefullyandanswerquestions

Para3Theforest’sdifferentlevelsofplantspeciesAtthebottom,________________________________________.Abovethat___________________________________________.Thenextlevel_________________________________________.Eachleveloftheforestformsitsownlittleworld,_______todifferentkindsoflivingthings.homeThenthereare______________________________,andfinally____________________________________________________.thereisasystemofrootsbeneaththegroundisthemassofleaflitteronthedarkforestfloorismadeupofshorterplantswithlargeleavesthetoweringancienthardwoodsthetopsofthetallesttreesmanymetresabovethegroundIntensivereading:Readcarefullyandanswerquestions

Para4Theforest’sdifferentspeciesofanimalsMorethan1,300speciesofb_____andover400speciesofm_______hideamongthejungle’splantlife.Theyformaperfect______________intheforest.irdsammalsfoodchainIntensivereading:Readcarefullyandanswerquestions

Para4Jaguarsfeedonatleast87species,including________.Thesefrogs,inturn,feedon_______whicheat_______and______.Whenajaguardies,atinyarmyofmicroorganismshelps__________itsbodyand________thenutrientstotheearth.

frogsinsectsleavesfruitbreak

downreturnIntensivereading:Readcarefullyandanswerquestions

Para4frogsinsectsleavesandfruitJaguars’deadbodiesJaguarstheforest’sfoodchainIntensivereading:Readcarefullyandanswerquestions

Para51.WhatmakestheAmazonrainforestanaturaltreasureaccordingtothescript?TheAmazonforestbreatheslifeintotheplanetbyfixingcarbonandproducingover20percentofalltheEarth’soxygen.Thus,itisknownasthe“l(fā)ungsoftheplanet”.Moreover,theAmazonforestisatreasurehouseofspeciesthatcanbeusedforfoodormedicine.Intensivereading:Readcarefullyandanswerquestions

Para52.Theforest’scurrentdanger:Thereisonemajordangertothese____________plantsandanimals.Overthepast50years,about17%oftherainforesthasdisappeared________humanactivities,suchasa__________andcattlef________.irreplaceableduetogriculturearming3.Whatquestionareweleftwith?Canweaffordtodamagethe“l(fā)ungsoftheplanet”?Intensivereading:Readcarefullyandanswerquestions

Para54.Inadditiontohuman’sactivities,whatotherfactorsmaycontributetothedisappearanceoftheforest?Theanswermaybehere:ThefollowingpassageisfromawebsiteabouttheAmazonrainforest.Pleasecompletethepassagewiththecorrectformsofthewordsandphrasesintheboxbelow.(P5)Post-readingⅣ1對(duì)…有害2砍伐樹木3發(fā)出警報(bào)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…morethanhalfthesizeofChinagetone’snamefrom…Importantwords&phrases14在長度上15地球上最豐富的多樣性16躺在…上面17令人難以置信的野生生物多樣性18在底部19在地下inlengththerichestbiodiversityontheEarthliedownonsthanunbelievablevarietyofwildlifeatthebottomImportantwords&phrasesbeneaththeground20由…組成21高聳的古老硬木22食物鏈上的一要素23以…為食24相應(yīng)地，依次25一小群微生物bemadeupofthetoweringancienthardwoodsoneelementofthefoodchainfeedonsthinturnatinyarmyofmicro-organismsImportantwords&phrases26分解27給…帶來起色，注入活力28固定；修理29而且；此外30不可替代的31繼續(xù)做某事32瀕臨滅絕breakdownbreathelifeintosthfixmoreoverirreplaceablecontinuedoing/todosthindangerofextinctionImportantwords&phrases33給某人留一個(gè)問題34承擔(dān)得起做某事35積累營養(yǎng)36因此37吸收;欺騙38被鎖上，被關(guān)起來39以令人難以置信的速度增長/生長leavesbwithaquestioncanaffordtodosthbuildupnutrientsasaresulttakeinbelockedupImportantwords&phrasesgrowatanunbelievablespeed40documentaryscript41…的家園，…的棲息地42各種各樣的43根據(jù)…判斷（做狀語的形式）44大片的、成片的

45由于紀(jì)錄片腳本behometoawiderangeofjudgingfromaseaofImportantwords&phrasesdueto1.TheAmazonrainforestcrossesintoeightcountries,including

BrazilandPeru,andoneoverseasregionofFrance.

語法功能：__________________

此句可改為：TheAmazonrainforestcrossesintoeightcountries,BrazilandPeru,andoneoverseasregionofFrance__________(include).

非謂語動(dòng)詞做狀語includedImportantsentences2.TheAmazonRiver,fromwhichtherainforestgetsitsname,iscloseto6,400kilometresinlength…語法功能：____________________________

定語從句Importantsentences3.Abovethatisthemassofleaflitteronthedarkforestfloor.

語法功能：_______________________________表示地點(diǎn)的介詞短語位于句首用全部倒裝

4.Whileasignificantnumberofjaguarssurvivehere,

theyareonlyoneelementofthisforest’sfoodchain.語法功能：_______________讓步狀語從句Importantsentences5.Overthepast50years,about17percentoftherainforesthasdisappearedduetohumanactivitiessuchasagricultureandcattlefarming.

語法功能：_______________現(xiàn)在完成時(shí)語法功能：_______________6.Withanareaofaround6millionsquarekilometres,the

AmazonrainforestismorethanhalfthesizeofChina.

TheAmazonRiver,….—roughly100kilometres

longerthantheYangtze倍數(shù)表達(dá)法A+be+倍數(shù)+thesize/height/weight/length/width/depthof+BA+be+倍數(shù)+比較級(jí)+thanBImportantsentencesA+be+倍數(shù)+as+形容詞/副詞+as倍數(shù)+what+主語+謂語

Theworldweliveinisfullofamazingw________.Amongthem,theAmazonrainforestisanaturaltreasure,Ahugeseaofgreen_____withthesoundsofanimals.Asthelargestrainforestintheworld,itplaysas_________roleinm_________thefinebalanceoftheEarth’se__________.FillintheblanksaccordingtothescriptondersaliveignificantaintainingycosystemTheAmazonrainforestc_____intoeightcountriesandoneo______region,allontheSouthAmericac________.Withan____ofaround6millionsquarekilometres,theAmazonrainforestismorethanhalfthe_____ofChina.TheAmazonRiver,______whichtherainforestgetsitsname,iscloseto6,400kilometresinl_______—r_______100kilometresl______thantheYangtzeRiver.____itsjourneyfromthemountainstotheocean,theriversupportsmanydifferente__________.Theygivethisareather______biodiversityontheEarth.rossesverseasontinentareasizeengthouglyongerOncosystemsichestfromFillintheblanksaccordingtothescriptMorethan40,000plants______canbefoundintheAmazon.Theforest’sdifferentlevelssupportanu_________varietyofwildlife.Attheb_____,thereisasystemofrootsb______theground.Abovethat___themassofleaflitteronthedarkfloor.Thenextlevelis___________shorterplantswithlargeleaves.Thentherearethet________ancienthardwoods,andfinallythetopsofthetallesttreesmanymetresabovetheground.Eachleveloftheforestformsitsownlittleworld,______todifferentkindsoflivingthings.peciesnbelievableottomeneathismadeupofoweringhomeFillintheblanksaccordingtothescriptMorethan1,300birdsandover400mammalsh____inthejungle.Thejaguarisoneexample.Whileasignificantnumberofjaguarss_____here,theyareonlyonee______oftheforest’sfood______.Theyf____onfrogs.Thesefrogs,in______,liveoninsectswhicheatleavesandfruit.Whenajaguardies,atinya____ofmicroorganismshelps___________itsbodyandreturnthen_______totheearth.ideurvivelementchaineedturnrmybreakdownutrientsFillintheblanksaccordingtothescriptTheAmazonrainforestb______lifeintotheplanetbyf____carbonandp________over20%ofalltheEarth’soxygen.Thus,itisk_____asthe“l(fā)ungsoftheplanet”.M_______,theAmazonra