北师大版高中英语选择性必修第一册UNIT3 Section Ⅰ Period1课件

Period1

UNIT3

CONSERVATION主题语境人与自然——人类生存、社会发展与环境的关系SectionⅠ

TOPICTALK&LESSON11．_______vt．破坏；毁掉2．_______vi．&vt．转换，改变3．____vi．&vt．猎取，猎杀4．_____adj．大量的5．______adj．各种各样的，形形色色的课时练案单元词汇表destroyswitchhuntmassvaried6．________n．减少；减少的量vi．&vt．减少7．______vt．责怪，指责8．______vt．影响9．_______vt．(使)恢复decreaseblameaffectrestore10．plasticadj．________11．miningn．______12．itemn．__________13．speciesn．________14．wipevt．______15．solaradj．_____________16．hatchvi．&vt．__________塑料制的采矿业一项，一条物种，种擦；拭太阳光(能)的(使)孵化1．Noonewasinjuredintheexplosion，butthebuilding____________

(destroy)completely．2．Doyouremember__________(switch)thelightsoffbeforewecameout？

3．________(hunt)wasoneofItaly'smostpopularsports，accordingtothesurveycarriedoutlastyear．wasdestroyedswitchingHunting4．Itisreportedthatfatalroadaccidents_____________(decrease)infrequencyoverrecentyears．5．AnicestormintheNortheastis________(blame)formanyofthoseproblems．6．Achild'sbehaviourcan__________(affect)byhisunhappyhomeenvironment．7．Themeasuresareintended_________(restore)publicconfidenceintheeconomy．8．Thehenmustfindawarmplace_______(hatch)hereggs．havedecreasedtoblamebeaffectedtorestoretohatch1．conservev．保存；保护；保藏→____________n．保护→____________adj．保守的；守旧的2．recyclevi．&vt．再利用，回收利用→__________adj．可回收的→____________adj．不可回收的3．threatn．威胁；(灾难等坏事)发生的可能→________v．威胁；恐吓；危及→__________adj．受到威胁的conservationconservativerecyclableunrecyclablethreatenthreatened4．informvt．通知；告知→____________n．信息→____________adj．有教育意义的；知识性强的5．legaladj．合法的→_______adv．合法地→_________adv．非法地，违法地6．extinctadj．灭绝的，绝种的→__________n．灭绝；绝种；消亡7．incredibleadj．极好的；难以置信的→__________adv．非常地，极端地informationinformativelegallyillegallyextinctionincredibly8．urgev．催促；敦促；力劝；强烈要求→______adj．紧急的，急迫的→_______n．紧迫；急迫；紧急的事9．usualadj．经常的，通常的；寻常的，惯常的→_______adj．异常的；不平常的10．varyv．变化；不同→______adj．各种各样的，形形色色的→_______n．变化；品种；种类；多样化11．endangervt．危及，使遭受危险→__________adj．濒危的urgenturgencyunusualvariedvarietyendangered1．Hewasinterestedinwildlife____________andheproposedthelocalgovernmentshouldintroducesometoughnewlaws__________wildlifeinthearea．(conserve)2．___________materialsmustbe________inordertoprotectourenvironment．(recycle)3．Thesituationcouldworsenifstormsmovenorthand________(threat)wintergrainsupplies．conservationtoconserveRecyclablerecycledthreaten4．Wedonothaveanymore__________(inform)atthepresenttime．5．Supposeyousatisfyyourdesire_________(legal)，don'tyouthinkthatyouwillbepunishedforthat？6．Anoperationisbeginningtotrytosaveaspeciesofcrocodilefrom__________(extinct)．7．Helivesaverysimplelifeforapersonwhohasbecome__________(incredible)rich．informationillegallyextinctionincredibly8．Iamafraidyouhavenotrealisedthe_______(urgent)ofthematter．9．Heleadsafulland______lifeandheoftengoestotheclubnearby，whichprovidesawide_______ofactivitiesincludingtennis，swimmingandbasketball．(vary)10．Itwon'thaveescapedyournoticethatI'vebeen_________(unusual)busyinthepastweek．11．Lookout!Therearesomedangerousanimalsinthearea，includingNorthAtlanticrightwhale，whichisan__________(endanger)species．urgencyvariedvarietyunusuallyendangered1．_________起某种作用2．____________尽自己的职责3．________彻底毁灭4．__________(对某事)负有责任5．______消失；绝迹，灭绝6．________处境危险，受到威胁7．__________采取行动8．_______简而言之havearoledoone'spartwipeoutbetoblamedieoutbeatrisktakeactioninshort1．Ifwedon'tsolvetheproblemofglobalwarming，ournextgenerationwill________．2．Everyoneofus________inprotectingtheenvironment．3．Thediseasethreatensto________theentirepopulation．4．Aloneinhisroom，heaskedhimselfwhetherhe____________fortheaccident．5．Therearenewusesofwordscominginandolduses________．beatriskhasarolewipeoutwastoblamedyingout1．conservationn．保护[联想]

①protectionn．保护②defence

n．保护；防卫2．dieout消失；绝迹，灭绝[联想]

①disappearv．消失；不见；

灭绝②diefrom死于；因……而死③dieof因……死；死于

词汇联想

由新知联想已知3．decreasen．减少；减少的量vi．&vt．减少

[联想]

①reducevt．减少②fallvi．减少

③cutdown减少4．endangeredadj．濒危的[联想]

①dangerousadj．危险的②indanger处于危险之中①entirespecies整个物种②wipeout彻底毁灭③unusualadj．异常的；不平常的④infact事实上⑤thethirdmassextinction第三次生物大灭绝课下预习第一篇课文⑥knownas以……而著称⑦variedadj．各种各样的，形形色色的⑧accordingto根据⑨volcaniceruptions火山喷发⑩asteroidn．小行星⑪thedecreaseoftheoxygencontent含氧量下降⑫globalwarming全球变暖⑬humanactivity人类活动⑭betoblame(对某事)负有责任⑮dieout消失；绝迹，灭绝⑯causeforconcern令人担心的原因⑰duetonaturalcauses由于自然原因⑱thatis即⑲alonglistofreasons很多原因⑳factoryfarming工业化种植㉑overfishingn．过度捕捞㉒negativelyaffectallotherspecies对所有其他物种都有负面影响㉓studytheissue研究这个问题㉔uptothreequartersof多达四分之三的……㉕dependon依靠㉖beatriskof处于……的危险或威胁中㉗thebalanceinnature自然平衡㉘havenoairtobreathe没有可以呼吸的空气㉙beunabletosurvive无法生存㉚takeaction采取行动㉛takestepstodo...采取措施做……㉜saveendangeredspecies拯救濒危物种㉝setupspecialareas建立特别保护区㉞naturalsourcesofenergy天然能源㉟solarenergy太阳能㊱inshort简而言之㊲stopdestroyingtheplanet停止破坏星球㊳onlyfiveblackrobinsleft只剩下5只黑知更鸟㊴offthecoastofNewZealand离新西兰海岸不远㊵layeggs下蛋㊶wildlifeworkers野生动物工作者㊷beginaprogrammefor开始……的计划㊸hatchvi．&vt．(使)孵化㊹takecareofthechicks照顾雏鸟㊺thankstotheirefforts由于他们的努力㊻restoretheirhabitats恢复它们的栖息地THESIXTHEXTINCTIONExtinctions，whereentirespecies①arewipedout②(1)，arenotunusual③inourEarth'shistory．Infact④，over90percentofallspeciesthateverlived(2)arenowextinct．Inthelast500millionyears，therehavebeenfivetimeswhenlifeonEarthhasalmostended(3)．Theseincludethethirdmassextinction⑤，knownas⑥the“GreatDying”，whichkilled90%to96%ofallspecies(4)．Andthefifthevent，whichoccurred66millionyearsago(5)，causedthedeathofthedinosaurs．Thereasonsforextinctionsarevaried⑦．Accordingto⑧scientists，theyincludevolcaniceruptions⑨，asteroids⑩hittingtheEarthfromspace，changesinsealevels，thedecreaseoftheoxygencontent⑪

oftheseaandglobalwarming⑫．ManyscientistssaywearenowenteringtheEarth'ssixthmassextinction(6)．Thistime，humanactivity⑬willbetoblame⑭．(1)where引导非限制性定语从句，修饰先行词Extinctions。(2)that引导限制性定语从句，修饰先行词species。(3)when引导限制性定语从句，修饰先行词fivetimes。(4)which引导非限制性定语从句，修饰先行词thethirdmassextinction。(5)which引导非限制性定语从句，修饰先行词thefifthevent。(6)该句为省略that的宾语从句。

Althoughitisnotunusualforspeciestodieout⑮

naturally，therateatwhichthisisnowhappeningiscauseforconcern⑯．(7)A2015studybyscientistswhowerebasedatBrownUniversityandDukeUniversityintheUS，lookedathowquicklyspeciesdieoutduetonaturalcauses⑰，thatis⑱，the“backgroundextinctionrate”．(8)Theyfoundthathumanactivityiscausingspeciestodieout1，000timesfasterthannormal(9)．Thereisalonglistofreasons⑲

whysomanyspeciesaredyingout(10)：airandwaterpollution，forestsbeingdestroyed，factoryfarming⑳

andoverfishing㉑．Itisclearthathumanactivityhasnegativelyaffectedallotherspecies㉒

onEarth，includinganimalsandplants．(11)(7)句中Although引导让步状语从句；atwhich...happening为限制性定语从句，修饰先行词therate。(8)句中who...theUS为限制性定语从句，修饰先行词scientists；how...naturalcauses为宾语从句。(9)that引导宾语从句。(10)why引导限制性定语从句，修饰先行词reasons。(11)It为形式主语，真正的主语为后面的that从句。

Ifasixthmassextinctionoccurs，scientistswhohavestudiedtheissue㉓

believethatuptothreequartersof㉔

allspeciesonEarthcoulddieout．(12)Ofcourse，aswehumansdependon㉕

somanyspeciesforoursurvival(13)，wewouldalsobeatriskof㉖

dyingout．Ourworldandourlivesdependonthebalanceinnature㉗

betweenanimalsandplants．Withoutforests，wewouldhavenoairtobreathe㉘，andwithoutcleanwaterwewouldbeunabletosurvive㉙．(12)句中If引导条件状语从句；who...theissue为限制性定语从句，修饰先行词scientists；that...dieout为宾语从句。(13)as引导原因状语从句。

Canasixthextinctionbeavoided？Expertssaythatitisnotyettoolate，ifwetakeaction㉚now．(14)Thiswouldmeanwehavetosignificantlychangethewaywelive(15)．Forexample，weneedtotakestepsto㉛

saveendangeredspecies㉜，includingsettingupspecialareas㉝

whereplantsandanimalscanbeprotected(16)．Weneedtochangehowweworkandtravelbyusingcleaner，morenaturalsourcesofenergy㉞，suchaswindandsolarenergy㉟(17)．Wealsoneedtoimproveourfarmingmethodstoreducewater，airandlandpollution．Inshort㊱，ifwewanttosurvive，weneedtostopdestroyingtheplanet㊲

thatweliveonandstarttoprotectit．(18)(14)句中that引导宾语从句；ifwetakeactionnow为条件状语从句。(15)该句为省略that的宾语从句，其中welive为限制性定语从句，修饰先行词theway。(16)where引导限制性定语从句，修饰先行词specialareas。(17)how引导宾语从句。(18)句中if引导条件状语从句；thatweliveon为限制性定语从句，修饰先行词theplanet。TheBlackRobinBlackrobinsarethebirdsthathumanssavedfromextinction(19)．In1980，therewereonlyfiveblackrobinsleft㊳

intheworld．TheyalllivedonasmallislandoffthecoastofNewZealand㊴．Onlyoneofthosebirds，afemalecalledOldBlue，wasabletolayeggs㊵．Wildlifeworkers㊶

beganaprogrammefor㊷

raisingblackrobinchicks．TheyprotectedOldBlue'seggs，helpedthemtohatch㊸，andtookcareofthechicks㊹．Thankstotheirefforts㊺，therearenowmorethan250blackrobins，andthepopulationisspreading．Tohelpthemsurvive，peoplearerestoringtheirhabitats㊻

andremovingsmallanimalsthathuntthem，suchasmiceandcatsfromtheislandswheretheylive．(20)(19)that引导限制性定语从句，修饰先行词thebirds。(20)句中thathuntthem为限制性定语从句，修饰先行词smallanimals；wheretheylive也是限制性定语从句，