新编英语教程 4 Unit 8 Antarctica

新编英语教程4Unit8Antarctica新编英语教程4Unit8Antarctica新编英语教程4Unit8Antarctica新编英语教程4Unit8Antarctica编制仅供参考审核批准生效日期地址：电话：传真:邮编:Unit8AntarcticaI.Lead-inActivities:1.DoyouknowAntarcticaHowdidyouknowitWhatkindofnewsaboutitareyouofteninformedthroughthemediaKeywords:continent,southernmost,expedition:ajourneytakenbyagroupofpeoplewithadefiniteobjective2.HowmuchdoyouknowaboutAntarcticaFeaturesofAntarctica:Antarcticahasnotbeenconqueredbymansofarandhowourtenureofitisquestionableeventoday.Reasons:Greatisolationfromotherland;Notinhabitedbyhumans;Hardlyanyplantoranimallife;Verylittlerain;(,intensecold;,Howlingwind;NohumanchildeverbornthereThemosttempestuousseasaroundit,lastpara)II.Details:1.WhatdosethewriterintendtotellthereaderaboutAntarcticabypresentingastrikingdescriptionofitUseafewwordstodescribeitsmostdistinctiveappearace.Heintendstoenfoldthe“mostspectacularnaturalphenomenon”onearth.Seenfromspace,itisahugeicesheetwhichradiateslightlikeagreatwhitelanternacrossthebottomoftheworld.2.WhydoyouthinkpeopleusedtoregardtheArcticandtheAntarcticasmuchalikeWhatisthefactabouttheirsimilaritiesanddifferencesSincebotharetheendsoftheearthaxisrespectivelyinthenorthandinthesouth,coveredwithavastandthicklayeroficeandsnow,Bothareextremelycoldallyearround.However,thefactisthattheirdifferencesoutweightheirsimilarities.Asurveyoftheirdifferences:1)geographicalposition:TheArcticisclosely____(by)the___continentsofEurope,AmericaandAsia;whiletheAntarcticais__,separatedfromthenearestlandbyvast__ofthemost__seasonearth.(hemmedin/surrounded,populated,isolated,reaches,tempestuous)2)climate:refertothetextandsummarizetheirclimaticdifference;3)rainfall(precipitation):4)vegetation:theonlyplantsare____ontherockfaces.(ahandfulofmossesandlichens)Animals:theonlylandlife___Population:thereisnopermanent___,thoughthereareresearchstationsinAntarctica.3.WhyhasnotnohumanchildeverbeenborninAntarcticaThereisalackofthebasicessentialstolife:rainfall,warmthandadegreeofstillness.Apartfromextremecold,windisasinjurioustohumanhealthascold.4.WhatwasthemaindrawbacktotheunveilingofAntarcticaBesidestheclimate,anevengreaterdrawbackwhichhadpreventedpeoplefromsettingeyeandsetfootonwasthenatureoftheSouthernOceanwhichsurroundsit.iii.ComprehensionExercises:1.TrueorFalse:Textbook2.DifficultSentences:WorkbookLanguagePoints:1.beinclinedtodosth.:belikelyto,tendto.Tomisinclinedtobelazy.

Nooneseemedinclinedtohelp.2.asregards:regarding,concerning,about,asfaras…isconcerned.Asregardshisability,weallfeelhehasgreatpotential.Youcanrestassuredasregardshischaracter.3.byfar:alargeamountordegree.Generallyusedwithacomparativeorsuperlativeadj..Thenewmodeofcellphoneisbyfarthebestofitskind.4.Haveaneffecton:affect.Eachlivingthinginanecosystemhasagreateffectonmanyothersinmanyways.Pollutionwillhaveadirecteffectontheunexpectedchangeinclimateallovertheworld.5.Smallwonder(that)…:nowonder,notsurprisingly.Mostyoungpeopleareinclinedtofollowthefashion.Smallwonder(that)myteen-agenieceissofashion-conscious.AnewgovernmentpolicyonforestsisduetobeunveiledinApril.7.outweigh

verb[T]tobegreaterormoreimportantthansomethingelse:Thebenefitsofthistreatmentfaroutweighanyrisks.8.hemsbinphrasalverb[M]tosurroundsomeoneandpreventthemfrommovingordoingwhattheywanttodo:WhentheyreachedOxfordCircus,thedemonstratorswerehemmedinbythepolice.Wordsandphrasesforself-study:ahandfulofAtspeedBedescribedasBeinjurioustoIn…isolationRemaininviolateThinkof…asAttimesIncontrastInlengthLetaloneSet