unit 7 单元整体教案.docx

unit 7 单元整体教案.docx

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unit7单元整体教案

Unit7Culturalrelics

Ⅰ.TeachingGoals:

1.Talkaboutculturalrelics.

2.Talkaboutwaystoprotectculturalrelics.

3.Giveadviceandmakesuggestions.

4.UsethePresentPerfectPassiveVoice.

5.Writealettertotheeditor.

Ⅱ.TeachingTime:

Fourperiods

Ⅲ.BackgroundInformation

Ⅰ.LeaningTowerofPisaRepaired

Latelastyear,engineerscelebrated（庆祝）thecompletionofrepairstotheLeaningTowerofPisa.ItalianofficialsclosedtheLeaningTowerforsafetyreasonsmorethanadecadeago.Expertsnowsaytherepairswillmakethebuildingsafeforatleastafewmorecenturies.

TheLeaningTowerisfamousaroundtheworld.ManyvisitorstoItalytraveltothecityofPisatoseetheunusual-lookingstructure.Theroundtowerismorethaneight-hundredyearsold.

TheLeaningTowerofPisaiseasytorecognize.Thewhitestonebuildingissinking（沉陷）,orleaning,ononeside.Thetowerisaboutfifty-fivemetershigh.Itssouthsideismuchlowerthanitsnorthside.

TheLeaningTowerisleaningbecauseitwasbuiltonsoftsandysoil.Thesoilcannotsupportitsweight.Thetowerweighsaboutfourteen-thousand-five-hundredmetrictons.Thegroundunderthetowerfirststartedtosinksoonafterworkersbeganbuildingthestructureintheyear1173.

Inrecentyears,theLeaningTowerhascontinuedtosink.Expertsexpressedconcernthatthetowermightfallsuddenly.In1989,asimilartowerintheItaliancityofPaviafell.Fourpeoplewerekilled.Thefollowingyear,ItalianofficialsclosedtheLeaningTowerofPisa.Peoplewerenolongerpermittedtowalkuptothetop.

AninternationalteamofbuildingexpertsbeganaprojecttomakesuretheLeaningTowerdoesnotfalldown.Theprojectcostabouttwenty-fivemilliondollars.

First,engineersplacedeight-hundred-seventymetrictonsoflead（铅）weightsonthenorthsideofthetower.Thishelpedstopadditionalmovement.

Also,workerstidestrongsteelcables（钢索）aroundthestructure.Thesewireswereconnectedtolargeweightsinthearea.

Next,engineersslowlyremoved（移动）tonsofsoilfromunderthetower.Theyusedspecialdrills（钻孔机）toremovesmallamountsofsoiloverseveralmonths.

Slowlythetowermovedbacktowhereitstoodhundredsofyearsago.Itstillleans,butnotasmuchasbeforetherepairs.

RecentlytheareaaroundtheLeaningToweropenedtothepublicagain,thoughonlyaboutthirtyvisitorsarepermittedtoclimbthetoweratonetime.

Ⅱ.AbuSimbel

AbuSimbelisthesiteoftemplesbuiltbytheEgyptianKingRamsesⅡ.ThefourlargefiguresofRamsesinfrontofthemaintemplecanberegardedasoneofthemostspectacularexampleofancientEgyptianart.

CarvedoutofasandstonecliffonthewestbankoftheNile,southofKorosko,neartheSudanesefrontier,thetempleswereunknowntotheoutsideworlduntiltheirrediscoveryin1813.Theywerefirstexploredin1817.

The20metreseatedfiguresofRamsesweresetagainsttherecessedfaceofthecliff,twooneithersideoftheentrancetothemaintemple.CarvedaroundtheirfeetweresmallfiguresrepresentingRamses’queenandtheirchildren.Thetempleitself,dedicatedtothesungod,consistedofthreehallsextending185feetintothecliffwithmorefiguresoftheKingandwithpaintedreliefsshowinghislifeandachievements.

Between1964and1966aworkforceandaninternationalteamofengineersandscientists,supportedbyfundsfrommorethan50countries,dugawaythetopofthecliffandcompletelydisassembledthetemples,reconstructingthemonhighground200feetabovetheriverbed.

Ⅲ.ProtectingtheSphinx

Themostfamousstatue—theSphinxinEgypthasbeendamaged.Theexpertsaregoingtofindoutthecausetoprotectit.

TheSphinxhasthebodyofalionandthefaceofaman.ItwascutfromlinestonenearEgyptpyramidabout1600yearsago.NotlongbeforealargepieceofstonefellfromtheSphinx’rightshoulder.Toprotectthestatuefrommoreharm,acomputerwasplacedonittomeasurerainfall,windspeedandairtemperature.Thecomputeralsomeasuretheamountofwaterandairpollution,thedirectionofwindandthetemperatureofthestatueitself.Theeffectsofage,wind,waterandpollutionhavegreatlyweakenedtheSphnix.Sunlight,wind,waterandpollutionhavebeenerodingtheoutsideofthestatureforcenturies.Theexpertshopethattheinformationfromthecomputerwillhelpitfrommoredamage.TheysaythemoretheyknowaboutwhatisdestroyingtheSphnix,themoretheycandotoprotectit.

TheFirstPeriod

TeachingAims:

1.TalkaboutsomeculturalrelicstomaketheSsawareoftheimportanceofprotectingculturalrelicsandprotectthem.

2.TraintheSs’listeningability.

3.TraintheSs’speakingability.

TeachingImportantPoints:

1.Talkaboutwaystoprotectculturalrelics.

2.HowtoimprovetheSs’listeningability.

3.Howtogiveadviceandmakesuggestions.

TeachingDifficultPoint:

ImprovetheSs’listeningability