北師大版高中英語選擇性必修第一冊UNIT3 Section Ⅰ Period1課件

Period1

UNIT3

CONSERVATION主題語境人與自然——人類生存、社會發(fā)展與環(huán)境的關(guān)系SectionⅠ

TOPICTALK&LESSON11．_______vt．破壞；毀掉2．_______vi．&vt．轉(zhuǎn)換，改變3．____vi．&vt．獵取，獵殺4．_____adj．大量的5．______adj．各種各樣的，形形色色的課時練案單元詞匯表destroyswitchhuntmassvaried6．________n．減少；減少的量vi．&vt．減少7．______vt．責(zé)怪，指責(zé)8．______vt．影響9．_______vt．(使)恢復(fù)decreaseblameaffectrestore10．plasticadj．________11．miningn．______12．itemn．__________13．speciesn．________14．wipevt．______15．solaradj．_____________16．hatchvi．&vt．__________塑料制的采礦業(yè)一項，一條物種，種擦；拭太陽光(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；保護；保藏→____________n．保護→____________adj．保守的；守舊的2．recyclevi．&vt．再利用，回收利用→__________adj．可回收的→____________adj．不可回收的3．threatn．威脅；(災(zāi)難等壞事)發(fā)生的可能→________v．威脅；恐嚇；危及→__________adj．受到威脅的conservationconservativerecyclableunrecyclablethreatenthreatened4．informvt．通知；告知→____________n．信息→____________adj．有教育意義的；知識性強的5．legaladj．合法的→_______adv．合法地→_________adv．非法地，違法地6．extinctadj．滅絕的，絕種的→__________n．滅絕；絕種；消亡7．incredibleadj．極好的；難以置信的→__________adv．非常地，極端地informationinformativelegallyillegallyextinctionincredibly8．urgev．催促；敦促；力勸；強烈要求→______adj．緊急的，急迫的→_______n．緊迫；急迫；緊急的事9．usualadj．經(jīng)常的，通常的；尋常的，慣常的→_______adj．異常的；不平常的10．varyv．變化；不同→______adj．各種各樣的，形形色色的→_______n．變化；品種；種類；多樣化11．endangervt．危及，使遭受危險→__________adj．瀕危的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．_________起某種作用2．____________盡自己的職責(zé)3．________徹底毀滅4．__________(對某事)負有責(zé)任5．______消失；絕跡，滅絕6．________處境危險，受到威脅7．__________采取行動8．_______簡而言之havearoledoone'spartwipeoutbetoblamedieoutbeatrisktakeactioninshort1．Ifwedon'tsolvetheproblemofglobalwarming，ournextgenerationwill________．2．Everyoneofus________inprotectingtheenvironment．3．Thediseasethreatensto________theentirepopulation．4．Aloneinhisroom，heaskedhimselfwhetherhe____________fortheaccident．5．Therearenewusesofwordscominginandolduses________．beatriskhasarolewipeoutwastoblamedyingout1．conservationn．保護[聯(lián)想]

①protectionn．保護②defence

n．保護；防衛(wèi)2．dieout消失；絕跡，滅絕[聯(lián)想]

①disappearv．消失；不見；

滅絕②diefrom死于；因……而死③dieof因……死；死于

詞匯聯(lián)想

由新知聯(lián)想已知3．decreasen．減少；減少的量vi．&vt．減少

[聯(lián)想]

①reducevt．減少②fallvi．減少

③cutdown減少4．endangeredadj．瀕危的[聯(lián)想]

①dangerousadj．危險的②indanger處于危險之中①entirespecies整個物種②wipeout徹底毀滅③unusualadj．異常的；不平常的④infact事實上⑤thethirdmassextinction第三次生物大滅絕課下預(yù)習(xí)第一篇課文⑥knownas以……而著稱⑦variedadj．各種各樣的，形形色色的⑧accordingto根據(jù)⑨volcaniceruptions火山噴發(fā)⑩asteroidn．小行星?thedecreaseoftheoxygencontent含氧量下降?globalwarming全球變暖?humanactivity人類活動?betoblame(對某事)負有責(zé)任?dieout消失；絕跡，滅絕?causeforconcern令人擔心的原因?duetonaturalcauses由于自然原因?thatis即?alonglistofreasons很多原因?factoryfarming工業(yè)化種植?overfishingn．過度捕撈?negativelyaffectallotherspecies對所有其他物種都有負面影響?studytheissue研究這個問題?uptothreequartersof多達四分之三的……?dependon依靠?beatriskof處于……的危險或威脅中?thebalanceinnature自然平衡?havenoairtobreathe沒有可以呼吸的空氣?beunabletosurvive無法生存?takeaction采取行動?takestepstodo...采取措施做……?saveendangeredspecies拯救瀕危物種?setupspecialareas建立特別保護區(qū)?naturalsourcesofenergy天然能源?solarenergy太陽能?inshort簡而言之?stopdestroyingtheplanet停止破壞星球?onlyfiveblackrobinsleft只剩下5只黑知更鳥?offthecoastofNewZealand離新西蘭海岸不遠?layeggs下蛋?wildlifeworkers野生動物工作者?beginaprogrammefor開始……的計劃?hatchvi．&vt．(使)孵化?takecareofthechicks照顧雛鳥?thankstotheirefforts由于他們的努力?restoretheirhabitats恢復(fù)它們的棲息地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，thedecreaseoftheoxygencontent?

oftheseaandglobalwarming?．ManyscientistssaywearenowenteringtheEarth'ssixthmassextinction(6)．Thistime，humanactivity?willbetoblame?．(1)where引導(dǎo)非限制性定語從句，修飾先行詞Extinctions。(2)that引導(dǎo)限制性定語從句，修飾先行詞species。(3)when引導(dǎo)限制性定語從句，修飾先行詞fivetimes。(4)which引導(dǎo)非限制性定語從句，修飾先行詞thethirdmassextinction。(5)which引導(dǎo)非限制性定語從句，修飾先行詞thefifthevent。(6)該句為省略that的賓語從句。

Althoughitisnotunusualforspeciestodieout?

naturally，therateatwhichthisisnowhappeningiscauseforconcern?．(7)A2015studybyscientistswhowerebasedatBrownUniversityandDukeUniversityintheUS，lookedathowquicklyspeciesdieoutduetonaturalcauses?，thatis?，the“backgroundextinctionrate”．(8)Theyfoundthathumanactivityiscausingspeciestodieout1，000timesfasterthannormal(9)．Thereisalonglistofreasons?

whysomanyspeciesaredyingout(10)：airandwaterpollution，forestsbeingdestroyed，factoryfarming?

andoverfishing?．Itisclearthathumanactivityhasnegativelyaffectedallotherspecies?

onEarth，includinganimalsandplants．(11)(7)句中Although引導(dǎo)讓步狀語從句；atwhich...happening為限制性定語從句，修飾先行詞therate。(8)句中who...theUS為限制性定語從句，修飾先行詞scientists；how...naturalcauses為賓語從句。(9)that引導(dǎo)賓語從句。(10)why引導(dǎo)限制性定語從句，修飾先行詞reasons。(11)It為形式主語，真正的主語為后面的that從句。

Ifasixthmassextinctionoccurs，scientistswhohavestudiedtheissue?

believethatuptothreequartersof?

allspeciesonEarthcoulddieout．(12)Ofcourse，aswehumansdependon?

somanyspeciesforoursurvival(13)，wewouldalsobeatriskof?

dyingout．Ourworldandourlivesdependonthebalanceinnature?

betweenanimalsandplants．Withoutforests，wewouldhavenoairtobreathe?，andwithoutcleanwaterwewouldbeunabletosurvive?．(12)句中If引導(dǎo)條件狀語從句；who...theissue為限制性定語從句，修飾先行詞scientists；that...dieout為賓語從句。(13)as引導(dǎo)原因狀語從句。

Canasixthextinctionbeavoided？Expertssaythatitisnotyettoolate，ifwetakeaction?now．(14)Thiswouldmeanwehavetosignificantlychangethewaywelive(15)．Forexample，weneedtotakestepsto?

saveendangeredspecies?，includingsettingupspecialareas?

whereplantsandanimalscanbeprotected(16)．Weneedtochangehowweworkandtravelbyusingcleaner，morenaturalsourcesofenergy?，suchaswindandsolarenergy?(17)．Wealsoneedtoimproveourfarmingmethodstoreducewater，airandlandpollution．Inshort?，ifwewanttosurvive，weneedtostopdestroyingtheplanet?

thatweliveonandstarttoprotectit．(18)(14)句中that引導(dǎo)賓語從句；ifwetakeactionnow為條件狀語從句。(15)該句為省略that的賓語從句，其中welive為限制性定語從句，修飾先行詞theway。(16)where引導(dǎo)限制性定語從句，修飾先行詞specialareas。(17)how引導(dǎo)賓語從句。(18)句中if引導(dǎo)條件狀語從句；thatweliveon為限制性定語從句，修飾先行詞theplanet。TheBlackRobinBlackrobinsarethebirdsthathumanssavedfromextinction(19)．In1980，therewereonlyfiveblackrobinsleft?

intheworld．TheyalllivedonasmallislandoffthecoastofNewZealand?．Onlyoneofthosebirds，afemalecalledOldBlue，wasabletolayeggs?．Wildlifeworkers?

beganaprogrammefor?

raisingblackrobinchicks．TheyprotectedOldBlue'seggs，helpedthemtohatch?，andtookcareofthechicks?．Thankstotheirefforts?，therearenowmorethan250blackrobins，andthepopulationisspreading．Tohelpthemsurvive，peoplearerestoringtheirhabitats?

andremovingsmallanimalsthathuntthem，suchasmiceandcatsfromtheislandswheretheylive．(20)(19)that引導(dǎo)限制性定語從句，修飾先行詞thebirds。(20)句中thathuntthem為限制性定語從句，修飾先行詞smallanimals；wheretheylive也是限制性定語從句，