完整版大学英语精读第三版第二册U5教案Word文档格式.docx

完整版大学英语精读第三版第二册U5教案Word文档格式.docx

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3.Aboutthereading,Ssshouldacquirethereadingskill—usingwordpartcluesforwordmeanings.

4.Aboutthewriting,Ssshouldgettoknowthewritingskill—

coherence.

5.Aboutthelistening,SswillfinishtheUnit5directedbytheteacher.

TeachingProcedures:

I.Pre-readingActivities

Backgroundinformation:

1.Glaciers

Glacier,anenduringaccumulationofice,snow,water,rock,andsediment（沉淀物）thatmovesundertheinfluenceofgravity.Glaciersformwherethetemperatureislowenoughtoallowfallingsnowtoaccumulateandslowlytransformintoice.Thisaccumulationismostcommoninthepolarregions,butcanalsooccurathighaltitudesonmountainsevenneartheequator.Glaciersarecomplexsystemsthatgrowandshrinkinresponsetoclimate.Atthepresent,glaciericecoversabout15millionsqkm（5.8millionsqmi）,or10percent,ofEartharea.

2.Polaricecap

Apolaricecapisahigh-latituderegion,centeredinthepolarregion,whichiscoveredinice.

3.Greenland

AnArcticislandnationlocatedinNorthAmericabygeography,Greenlandisaself-governedDanishterritory.Itistheworld'

largestisland,andabout81percentofitssurfaceiscoveredbyice.

4.GlobalWarming

GlobalwarmingreferstoanaverageincreaseintheEarth'

stemperature,whichinturncauseschangesinclimate.AwarmerEarthmayleadtochangesinrainfallpatterns,ariseinsealevel,andawiderangeofimpactsonplants,wildlife,andhumans.Whenscientiststalkabouttheissueofclimatechange,theirconcernisaboutglobalwarmingcausedbyhumanactivities.

5.Manhattan

ManhattanisoneofthefiveboroughsthatcomprisetheCityofNewYork.ItisbyfarthemostdenselypopulatedcountyintheUnitedStatesandfamousforitssoaringskyscrapers.

Manhattan（Island）isoneofthecommercial,financial,andculturalcentersoftheworld.Ithasmanyfamouslandmarksandtouristattractions.TheyincludeBroadway,Chinatown,theEmpireStateBuilding,GreenwichVillage,TimesSquare,TheUnitedNationsHeadquarters,WallStreet,andmanychurches,colleges,skyscrapers,andtheaters.MostofNewYork'

municipalbuildingsstandonManhattanIsland.WhenpeoplethinkofNewYorkCity,theyareusuallythinkingofManhattan,thecoreofthecity.

6.TheBritishIsles

TheBritishIslesaresgroupofislandsoffthenorthwestcoastofEurope

consistingofGreatBritain（thatisEngland,ScotlandandWales）,Irelandandthemanysmalleradjacentislands.Theseislandsformanarchipelagoofmorethan6,000islands.

7.IsaacAsimov

IsaacAsimovwasbornon2January1920intheformerSovietUnion,butgrewupinBrooklyn,NewYork.HetaughtbiochemistryatBostonUniversityuntilheretiredin1958tobecomeafull-timewriter.Asimovhadbeenpublishingshortstoriessincethelate1930s,andin1952publishedhisfirstnovel.Theauthoroftheclassic,RobotseriesandTheFoundationTrilogy,Asimovwrotemorethan400booksandwoneverymajorsciencefictionaward.Healsowrotepopularbooksandessaysonscienceandtechnology,earninghimthenickname"

TheGreatExplainer."

IsaacAsimovdiedof“heartandkidneyfailure,whichwerecomplicationsoftheHIVinfection”on6April1992.HIVwasnotrevealedasthecauseofhisdeathuntil2002,whenhiswidowJanetpublishedthememoirsIt'

sBeenaGoodLife

Warm-upQuestions

1.What'

theweatherlikeinyourhometown?

Doyoulikeit?

Whyorwhynot?

2.Haveyouevernoticedanychangesinyourhometownorinthecityyou'

renowlivingin?

Whatarethey?

3.Doyouhaveanyideaofthegreenhouseeffect?

Howdoesitaffectthe

temperatureonEarth?

IntroductoryQuestionsforReadingComprehension

1.Whoisthe“villain”intheatmosphere?

2.WhatdoescarbondioxidedotoplantsandanimallifeontheEarth?

3.Whatishappeningtothesealevel?

Whatwilltherisingsealeveldotoourlife?

4.WhatdoescarbondioxidedotothetemperatureoftheEarth?

5.Howcomethattheconcentrationofthegasintheatmosphereisgoingupsteadily?

6.Sointhefinalanalysis,whoarethevillainsandwhoarethevictims?

7.Whatshouldbedone?

II.KeyWords&

Expressions

1.poisonous:

containingpoisoninitself;

veryharmfulandcauseillnessordeath

a）Dangerouslyhighlevelsofpoisonouschemicalswerefoundinthewater.

b）TheMinistryofHealthwarnedthegeneralpublictobeonhighalertagainstpoisonousmushrooms,as16peoplehavediedaftereatingdifferentkindsofpoisonousmushroomsthissummer.

2.essential:

absolutelynecessary;

extremelyimportant

a）ThebodycannotstoreVitaminCsoitisessentialtohaveafresh

supplyeveryday.

b）TheleadershipofthePartyisessentialtosocialistrevolutionandsocialistconstruction.

3.convert:

1）changeone'

sopinion,religion,politicalbelief,etc.

a）BillwasconvertedtoChristianitysoonafterheretiredfromthearmy.

b）Kevinissuchastubbornmanthatnotsurprisinglyhiswifefailedtoconverthim.

2）changetoorintoanotherform,substance,orstate,orfromoneuseorpurposetoanother

a）Waterisconvertedintosteamifitisboiled.

b）Myunclelivedinacomfortablehomeconvertedfromfarmbuildingssome15milestothenorthwestofthecity.

4.tissue:

1）massofcellsformingthebodyofananimalorofaplant

Theelderlyladystronglydisapprovesoftheuseoffetaltissueforthetreatmentofpeoplewithcertainillnesses.

2）thinlightpaperusedesp.forwrappingthings,orsoftpaperwhichisusedforcleaningandisthrownawayafteruse

--Thetaxidriveralwayskeepsaboxoftissuesinthetaxi.

5.serveas:

beusedforaparticularpurpose

a）Herapartmentalsoservesasheroffice.

b）Thatwillnotserveyouasanexcuse.

c）Intheabsenceofanythingbetter,thecouchwouldserveasabedforacoupleofnights.

6.liberate:

setfree

a）Trytoliberateyourselffrompreconceivedideas.

b）Theyliberatedalltheprisoners.

7.apparently:

accordingtoappearance;

asitseems

a）NotallofwhatMr.Blairwrotewasfalse,butmuchofwhatwastrueinhisarticlewasapparentlyliftedfromothernewsreports.

b）Theyoungmanwaswhistlingbythewindow,apparentlyquitecheerful.

8.inalllikelihood:

veryprobably

a）Inalllikelihoodtheflightwillbecanceled.

b）Interestrateswillgoupfurtherinalllikelihood.

likelihood:

probability

Thereismuch/every/no/littlelikelihoodthathe'

beelectedforthesecondterm.

8.steadily:

evenly;

regularly;

graduallyIt'

believedthattoday'

childrenwillbelivinginasteadilyimprovingenvironment.

9.beneath:

below;

underneath

a）Theindustrializedworldiscompletelydependentonoil,muchofwhichresidesbeneaththesurfaceofMiddleEasterncountries.

b）Afterweeksatsea,itwaswonderfultofeelfirmgroundbeneathourfeetoncemore.

11.starvation:

sufferingordeathfromlackoffood

Droughtconditionsduringthe1980sledtowidespreadstarvationinAfrica.

starve:

v.behungry;

gowithoutfood

Theexplorersstarvedtodeathinthedesert.

Let'

sgetsomethingtoeat;

I'

mstarving.

12.widespread:

found,placed,etc.,inmanyplaces

a）AwidespreadfluepidemicaffectedeighteenWesternstates.

b）Thepresidentwaselectedtoanewtermwithwidespreadpopularsupport.

13.structure:

1）thewayinwhichpartsareformedintoawhole

Thefamilyisseenastheprimarysocialstructureformeetingtheemotionalneedsofchildren.

2）anythingformedofmanyparts,esp.abuilding;

anycomplexwholeManybuildingsoftheperiodweresteelandcementstructure.

14.collapse:

1）falldownorinwardssuddenly

a）Thebuildingcollapsed,trappingthousandsofpeople.

b）Quiteafewhousescollapsedintheheavystormlastweek.

2）fallhelplessorunconscious

a）Ahikerwhocollapsedalongthesnowcoveredmountainswasrescuedafterhe'

dcalledforhelpfromhiscellphone.

b）Hecollapsedwhileworkinganddiedonthewaytohospital.

3）failsuddenlyandcompletely;

breakdown

a）Thecompanycollapsedwithoutanysignbeforehand.

b）Hethoughthiswholeworldhadcollapsedwhenhiswifedied.

15.pressure:

1）theactionofpressingwithforceorweight

a）Ittakesabitofpressuretomakethelidclose.

b）Thepressureofthewatercausedthewallofthedamtocrack.

2）troublethatcausesanxietyanddifficulty

a）Thepressureofmodernlifeiscausingviolence,murder,suicideandanobsessionwithfortune-telling.

Hishealthcollapsedunderthepressureofwork.

eabout:

takeplace;

happen

a）Howdidtheaccidentcomeabout?

b）Sometimesitishardtotellhowaquarrelcomesabout.

17.connection:

relationshipbetweenthingsorevents

a）Howlongwilltheconnectionofthenewtelephonetake?

b）Thedoctorbelievedthathisillnessmusthavehadsomeconnectionwithhisdiet.

18.transparent:

allowinglighttopassthroughsothatobjectsbehindcanbeclearlyseen;

thinorfineenought