Understandingideas

Unit5Adelicateworld目錄頁contentsPre-readingILanguagepointsⅣFastreadingIIHomeworkⅤIntensivereadingIIIVIPost-readingⅠPre-reading

Pre-readingLookatthepictureandanswerthequestions.1.Whatanimalscanyouseeinthepicture?Students’ownanswers.

Pre-readingLookatthepictureandanswerthequestions.2.Whatkindofchangeswouldtakeplaceifcats,ratsandrabbitswereintroducedtoanenvironmentlikethis?Theywouldhuntthebirdsandeatthenativevegetation,thusupsettingthelocalecologicalbalance.

BackgroundInformation

Pre-readingMacquarieIsland–UNESCOWorldHeritageCentreMacquarieIsland(34kmlongx5kmwide)isanoceanicislandintheSouthernOcean,lying1,500kmsouth-eastofTasmaniaandapproximatelyhalfwaybetweenAustraliaandtheAntarcticcontinent.TheislandistheexposedcrestoftheunderseaMacquarieRidge,raisedtoitspresentpositionwheretheIndo-AustraliantectonicplatemeetsthePacificplate.Itisamajor

BackgroundInformation

Pre-readinggeoconservationsignificance,beingtheonlyplaceonearthwhererocksfromtheearth’smantle(6kmbelowtheoceanfloor)arebeingactivelyexposedabovesea-level.Theseuniqueexposuresincludeexcellentexamplesofpillowbasaltsandotherextrusiverocks.ⅡFastreading

FastreadingReadthepassageandfindoutwhathappenedtoMacquarieIsland.Non-nativespeciesintroducedtoMacquarie

Islandattackednativebirds,andledtoa

substantialreductionofbirdpopulationand

eventheextinctionofparakeets.Inaddition,non-nativespeciesateanddevastatedthenative

FastreadingReadthepassageandfindoutwhathappenedtoMacquarieIsland.vegetation.Allofthisplayedapartinupsettingthenaturalharmonyoftheisland.Butnowtheisland’secologyisontheroadtorecoverywithhumanefforts.

FastreadingChoosetheauthor’spurposeinwritingthepassageandgiveyourreasons.1.ToanalysehowMacquarieIslandwassavedfromdestruction.2.ToinformreadersofthechaoscausedonMacquarieIslandbyhumans.3.ToentertainreaderswithafunnystoryaboutwhathappenedonMacquarieIsland.4.Tosuggestwaysinwhichanecosystemcanbeprotected.

FastreadingChoosetheauthor’spurposeinwritingthepassageandgiveyourreasons.Para2:...It’satragicstorythatbeganin1810whenhumansarrivedontheisland...

Para6:So,IamhereonMacquarieIslandtoparticipateintheprogrammetotrackthisproblem.Thefirststep...Manyexamplesalsogivecluestotheauthor’spurposeinwritingthepassage.IIIIntensivereading

Intensivereading:FinddetailedinformationOrganizeinformationfromthepassageandcompletetheflowchart.Tolivethere.Ratsandmicewerebroughttherebyaccident,and

theytookovertheisland,eatingthebirds’eggsandattackingbabybirds.ACTION(S)PURPOSE(S)RESULT(S)HumansarrivedonMacquarieIsland.

Intensivereading:FinddetailedinformationOrganizeinformationfromthepassageandcompletethechart.Catswerebroughttotheisland.Tocontroltheratsandmice.Thecatsdevelopedanappetiteforthebirds.ACTION(S)PURPOSE(S)RESULT(S)

Intensivereading:FinddetailedinformationRabbitswereintroducedtotheisland.Toprovidefoodforhumans.

theexplodingrabbitpopulationprovidedplentifulfoodforthecats.Thisledtomorecatshuntingthebirds.Asaresult,parakeetsdiedoutin1891.Organizeinformationfromthepassageandcompletethechart.ACTION(S)PURPOSE(S)RESULT(S)Rabbitsmultipliedandcausedsoilerosion,and

Intensivereading:FinddetailedinformationAviruswasreleasedontotheisland.Toremovealltherabbitsfromtheisland.Substantialreductionofrabbitpopulationledtocatskillingmorenativebirds.Organizeinformationfromthepassageandcompletethechart.ACTION(S)PURPOSE(S)RESULT(S)

Intensivereading:FinddetailedinformationTrapsanddogswereused.Tocatchthecats.Organizeinformationfromthepassageandcompletethechart.ACTION(S)PURPOSE(S)RESULT(S)Thedepartureofthecatsresultedinanincreasingpopulationofratsandmice.Andtherabbitpopulationexplodedonceagain.

Intensivereading:FinddetailedinformationPoisonanddogswereused.Toremovealltheremaininginvadingspecies.Theislandwaspest-freeanditsecologyisontheroadtorecovery.Organizeinformationfromthepassageandcompletethechart.ACTION(S)PURPOSE(S)RESULT(S)ⅣPost-reading

NowtalkabouthowhumaninterferenceledtosuchsevereconsequenceforMacquarieIsland.Post-reading:Thinkandshare

Whatisyourunderstandingof“...wehumansoweittotheislandtogiveitahappyending”?Post-reading:ThinkandshareShareyourownanswers.

2.Doyouthinkitwasrighttoeradicatethe“pests”fromMacquarieIsland?Giveyourreasons.Post-reading:ThinkandshareShareyourownanswers.

3.Howcouldsimilarsituationsbeavoidedinthefuture?Post-reading:ThinkandshareToavoidsimilarsituationsinthefuture,weshouldprotectthenaturalecosystemandbeawareofthepotentialimpactthathumanactivitiescanhaveonecosystems.

4.Whatlanguagecanyouusetotalkaboutcauseandeffect?Howwouldyouapplyittoyourreadingandwriting?Post-reading:ThinkandshareShareyourownanswers.LanguagepointsⅤ

1）設(shè)陷阱捕捉；夾??；卡住Eg:It’scrueltotrapbirds.

捕鳥是殘忍的。2）把……困??；使陷入困境Eg:Havingbeentrappedintraffic,hewaslateforwork.

因為交通堵塞，他上班遲到了。Languagepoints:Importantwords1.trapv.（trapped,trapped）

Languagepoints:Importantwordstrapn.1)陷阱；夾子；羅網(wǎng)

setatrapformice設(shè)夾子捉老鼠

2)（陷害人的）圈套；詭計

fallintoatrap落入圈套

3)

牢籠；困境Somepeoplefeelthatmarriageisatrap.

有人認(rèn)為婚姻是牢籠。

Languagepoints:Importantwordsn.dramaadj.dramatic[C]（一出）戲；戲劇性事件[U]戲?。粦騽∷囆g(shù)；戲劇文學(xué)1.戲劇的；戲劇性的thedramaticarts

戲劇藝術(shù)2.突然的adramaticincrease劇增3.給人印象深刻的adramaticvictory激動人心的勝利adv.顯著地；戲劇地；引人注目地

2.dramatically

3.harmonyn.和諧；和睦；融洽Languagepoints:ImportantwordsandexpressionsInthisheavenlyworld,peopleliveinperfectharmonywithnature.在這天堂般的世界里，人與自然和諧相處。

harmoniousadj.

和諧的；和睦的；harmonioussociety和諧社會

The“ChineseDream”isadreamtoimprovepeople’swell-beingandadreamofharmony,peaceanddevelopment.中國夢是提高人民幸福感的夢，是和諧、和平與發(fā)展的夢。

4.explodev.Languagepoints:ImportantwordsandexpressionsThefireworkexplodedinhishand.那個爆竹在他手里響了。2)（感情、暴力事件）爆發(fā)；激增explodewithanger勃然大怒Florida’spopulationexplodedafterWorldWarⅡ.二戰(zhàn)后，佛羅里達(dá)州的人口迅速增加。

1)

使爆炸explodeabomb

引爆炸彈

1.failtodosth2.inharmonywith3.developanappetitefor4.beintroducedto 5.soilerosion6.outofcontrol未能做成某事與……和諧被引入……土壤侵蝕失控對……產(chǎn)生興趣Languagepoints:Importantwordsandexpressions

7.remove...from8.decreasefrom...to9.inconsequence10.turnout11.asubstantialnumberof12.onceandforall13.everylast14.oweittosbtodosthLanguagepoints:Importantphrases結(jié)果；因此原來是；結(jié)果是，證明是大量的每一個(認(rèn)為)應(yīng)該為某人做某事徹底地；一勞永逸地從……移走/去除從……減少到……Languagepoints:Importantwordsandexpressions

1.Norwouldtheyfailtoimaginehowitsnativeinhabitants,includingroyalpenguins,kingpenguins,andelephantseals,existedinperfectharmonywiththeirnaturalhabitatforthousandsofyears.Languagepoints:ImportantsentencesParaphrase:Theycouldn’thelpbutimaginehowitsnativeinhabitants,includingroyalpenguins,kingpenguins,andelephantseals,existedincompleteunitywiththeirnaturalhabitatforthousandsofyears.

Languagepoints:Importantsentences例：1)Hedidn’tquithisjob,norwashefired.

他沒有辭職，也沒有被解雇。2)Theycouldn’tunderstanditatthetime,andnorcouldwe.他們那時無法理解這件事，我們也理解不了。具有否定意義的副詞放在句首時，句子要用部分倒裝結(jié)構(gòu)。本句中nor

為否定詞，它所引導(dǎo)的句子要用倒裝語序，常見結(jié)構(gòu)為：Nor+助動詞/be動詞/情態(tài)動詞+主語+謂語+其它成分

Languagepoints:Importantsentences1)Never

beforehaveIseensuchamovingfilm.2)Bynomeanswillwegiveup.3)Hardly

hadIenteredtheclassroomwhenthebellrang.具有否定意義的副詞放在句首時，句子要用部分倒裝結(jié)構(gòu)。類似副詞和短語還有：never,seldom,little,few,rarely,nowhere,notuntil,hardly…when,nosooner…than,notonly…butalso,innoway,bynomeans,undernocircumstancesetc.

Languagepoints:Importantsentencesfail的其它固定搭配：failindoingsth例：HefailedinpersuadingMarytogotherewithhim.

他沒能說服瑪麗和他一起去。failtodosth未能做成某事例:Thegreatbridgecannotfailtostopyouinyourtracks.

這座宏偉的大橋一定會讓你止步觀賞。

2.Unfortunately,thecatssubsequentlydevelopedanappetiteforthebirds,too.Languagepoints:ImportantsentencesParaphrase:Unfortunately,thecatssubsequentlybegantoeatthebirds,too.developanappetitefor...

developatastefor...對……產(chǎn)生興趣developaninterestin...

developaclosefriendshipwith...

與……產(chǎn)生親密的友誼developthehabitof...

養(yǎng)成……的習(xí)慣develop(an)immunityto...

對……產(chǎn)生免疫力

Languagepoints:Importantsentences例:1）Suzydevelopedaninterestinviolinwhenshewasjustachild.Suzy還是小孩子的時候，就對小提琴產(chǎn)生了興趣。

2）Hehasdevelopedthehabitofreadingbeforegoingtobed.他已經(jīng)養(yǎng)成了睡前閱讀的習(xí)慣。3）Theyhavedeveloped(an)immunitytothevirus.

他們已經(jīng)對病毒產(chǎn)生了免疫力。

3.Looseontheisland,theydidwhatrabbitsdobest–theymultipliedrapidlyandbeganeatingthenativevegetationanddiggingholes,whichcausedsoilerosion.Languagepoints:ImportantsentencesParaphrase:Rabbitswerefreeontheislandandtheydidwhatrabbitsdobest–theyincreasedtheirnumbersrapidlyandbeganeatingthelocalplants,flowers,etcanddiggingholes,whichcausedsoilerosion.

Languagepoints:Importantsentences1）Wereachedthetopofthemountain.Weweretiredandhungry.形容詞（短語）作狀語的用法：其邏輯主語為句子的主語，是由主語相同的兩個句子改寫而成的。=Wereachedthetopofthemountain,tiredandhungry.我們到達(dá)山頂。感覺又累又餓。=Satisfiedwithit,Janeboughtthebookimmediately.Jane對這本書很滿意，立刻就買了下來。2）Janewassatisfiedwithit.Sheboughtthebookimmediately.

4.Thisinturnledtomorecatshuntingthebirds.Languagepoints:ImportantsentencesParaphrase:Asaresult,thisledtomorecatshuntingthebirds.inturn依次；輪流。還可以表示結(jié)果，相當(dāng)于asaresult，和下文中的inconsequence同義。例：1）Thegrapeproductiondeclinedgreatlythisyear

whichinturnbroughtariseinitsprice.

今年的葡萄產(chǎn)量大幅度下降，因此價格上漲了。2）Hewasovertheagelimitandinconsequence,his

applicationwasrejected.

他已超過了年齡限制，因