College English Listening and Speaking Course 4Unit 4听力原文完整版.docx

College English Listening and Speaking Course 4Unit 4听力原文完整版.docx

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CollegeEnglishListeningandSpeakingCourse4Unit4听力原文完整版

Unit4ExplainingProcesses

PartAPre-listeningTask

Additionalquestionsfordiscussion

1.Differentteachingaidsarebeingusedinclassroomteaching.WhataretheadvantagesanddisadvantagesofusingtheOHPintheclassrooms?

AnOHPmayhelpmaketeachingandlearningmoreeffective.Itcanbeusedtoshowoutlines,figures,charts,pictures,andphotostothestudents.Itwillsavetheteachertimeforwritingordrawingontheblackboardorwhiteboard.Itwillenablethestudents,bothinthefrontandatthebackoftheclassroom,toseeclearlywhatispresented.Asthemachineisusedinnormalroomlight,itwon'taffectthestudents'abilitytotakenotes.

    ThebadthingaboutanOHPisthat,whenitbreaksdowninthemiddleofalecture,itwouldcauseaproblem.Theteachermayfindithardtocontinuehisteachingwithoutitifhehasplannedtodependonittodeliverhismaterial.Thestudentsmayendupwastingtheirtime.

2.Doyouliketousenewlyinventedequipmentinyourworkandstudy?

Whyorwhynot?

A:

Yes,Icertainlydo.Asastudentofindustrialdesign,howcanInotlikenewgadgets（小器具；新发明）andtechnology?

It'salwaysfuntotrythelatestdesignsandinventions--whetherapieceofequipmentforexperiments,acommunicationtool,orsomethingtohookupwithacomputer.Inadditiontothehardware,Ialsoliketotryoutnewsoftware.WhenIdothis,Imaynotonlyraiseefficiencyinmystudy,butalsolearnaboutnewideasthatmaybeusefultomyfuturework.

B:

No,I'mafraidIdon't.I'mnotmuchofatechnologypersonandnewequipmentalwaysscaresme.Ifindithardtofigureoutallthestepstotakeorallthebuttonstopushinordertooperateapieceofequipment.Ifanythinggoeswrongintheprocess,Iwon'tknowhowtodealwithit.

PartBListeningTasksI

HowtoUseanOHP

M:

Iwanttousetheoverheadprojectorformypresentation.Couldyoushowmehowtouseit?

W:

OK,letmeshowyou.JustwatchwhatIdo.I...I'lltalkyouthroughtheprocedure.

M:

Thanks.

W:

Right,well.Firstofall,youputtheOHPonthetablehere,about2metersfromthewallorthescreen.Er...doyouhaveascreen?

M:

Er...no.IthoughtI'djustusethewall.

W:

Oh,er...well,ascreen'sbetter,butIsupposethiswallwillbeallright.Itissortofwhite.Anyway,let'stryit.So,thenextthingyouhavetodoispressthesebuttonsinandliftthispartupuntilitsnapsintoplace.

M:

Isee.

W:

Andthenturnitroundsotheheadisfacingtowardsthescreen,Imeanthewall,andnowwecanplugitin.

M:

Right,andyouswitchiton?

W:

Yeah.ThenIpresstheswitchhereonthefront...

M:

Right.

W:

There!

Andthelightshouldcomeon.

M:

Right,OK.

W:

Yeah,thereweare.So,youjustplaceyourtransparencyhereontheglass.

M:

OK,there,oh!

W:

Oh,no!

No,theotherwayup.

M:

Ohyes,ofcourse.

W:

That'sright,yeah.Andtoraiseorlowertheimageyoumovethisflapupordown...There,that'sbetter.

M:

Right,OK.

W:

Andfinally,tofocustheimageyouturnthiswheeltomakeitsharp.Thereweare,that'snottoobad.

M:

Oh,that'sgreat,yeah.OK,thanks.

W:

Oh,onemorething:

whateveryoudo,don'tkeepswitchingitonandoff.I'mgoingtoswitchitoffnow.Now,whenyouuseitinyourpresentation,youshouldleaveitswitchedon,withapieceofpaperovertheglass.

M:

Right,I...er...Idon'tunderstandwhyyouhavetoleaveiton.

W:

Well,thereasonwhyyouhavetodothatisthatyoudon'twantthebulbtofail.Thebulbfailseasilyifthemachineisonandofffrequently.Ifitdoes,you'llhavetoreplacethebulb,whichwillbeveryhotandyoumaynothaveaspareanyway.Sothat'saboutit.Anyquestions?

M:

Erm...no,thatseemsallveryclear.Thankyouverymuch.

W:

You'rewelcome.Oh,andIreallydothinkyouneedtogetascreen,bytheway.Thepicturewouldbemuchbrighterthanonthatwall,youknow.

M:

Oh,OK.Well,I'llaskJimifhe'sgotone.

W:

Oh,goodidea!

Andmakesureheshowsyouhowtoputitup!

M:

Iwill.Thanksagain.

Listentotheconversation.WritedownthestepsinoperatingtheOHP.

Step1:

PuttheOHPonthetable.

Step2:

Pressthebuttonsinandliftthispartupuntilitsnapsintoplace.

Step3:

TurntheOHProundsotheheadisfacingtowardsthescreenorawhitewall.

Step4:

Plugitin

Step5:

Switchiton.

Step6:

Placethetransparencyonthestage.

Step7:

Movetheflapupordowntoraiseorlowertheimage.

Step8:

Turnthewheeltomaketheimagesharp.

SpeakingTaskI:

Whatdoyouthinkofthetextyou'vejustheard?

Exchangeviewswithyourpartner.

Reflections:

Commentontheconversationyouhavejustheard.You'vecaughtaglimpseofhowmodernequipmentisenteringourlife.Exchangeviewswithyourpartner.Youmaymentionthefollowingpointsinyourdiscussion.

1.theman'sproblemandhiseagernesstolearn

2.thewoman'sexpertiseandhergenuineconcernfortheman'sproblem

3.acorrectattitudetowardsomethingnewtoyou

    Withtherapidgrowthofmoderntechnology,manynewandmoreadvancedtypesofequipmentarefindingtheirwayintoclassrooms,offices,factories,andevenhomes,whichgreatlyincreasestheefficiencyofourwork.

    Intheconversation,themanisgoingtogiveapresentation.Ifheusestheoverheadprojector,hewillcertainlybeabletomakeabetterpresentation,buttheproblemishedoesn'tknowhowtooperatethemachine.Alotofpeopleinhissituationwouldprobablygiveupandjustdowithouttheprojector.Butthemanisnotafraidtoadmithisignoranceandseekhelpfromsomeoneelse.Sointheendheisrewardedwithmasteringtheskillofoperatingthemachine.

    Thewomantooisworthyofourpraise.Assomeonewhohastheexpertise,shedoesn'tassumeanairofsuperioritybutshowsinsteadagenuineconcernfortheman'sproblem.Sheispatientandconsiderate,demonstratingtothemanhowtousetheequipmentstepbystepandgivinghimcautionsconcerningsomevulnerablepart--thebulb--ofthemachine.

    Asyouthofthe21stcentury,weneedtoconstantlyupdateourknowledgeandskills.Mutualhelpbetweenfriendsorco-workersisaneffectivewaytoimproveourselves.

SpeakingTasksII:

Listentoasampleconversationinthispart,andcarryonsimilarconversationswithyourpartner.

Nowyouhaveachancetopracticeyourskillsinexplainingprocessestoothers.Usethesampleasyourmodeltocarryoutsimilarconversationswithyourpartneraccordingtothetopics.Taketurnstobethe"expert"andtheonethatwantstoknowhowtoperformacertaintask.

A:

Iwanttosetupascreensaverformycomputer.Canyoushowmehowtodoit?

B:

Sure.It'sjustafewclicksaway.Letmeshowyou.First,youright-clickonanyfreepartofyourdesktopsothatamenuappears.ThenyouselectPropertiesatthebottomofthemenuandclickonit.Then...

A:

Oh,letmetryit.FirstIright-clickonthedesktopandthenchooseProperties.

B:

Yes.Andnowyouhaveadialoguebox.

A:

WhatdoIdonow?

B:

YoucanclicktheScreenSavertabonthetop,andusethepull-downmenuintheScreenSavertabheretochoosethescreensaveryoulike.Forexample,let'strythisone.YoucanclickthePreviewbuttonandyou'llseeitrightaway.

A:

Oh,right.

B:

NowyoumoveyourmouseandthePreviewwilldisappear.YoucanalsosettheWaitPeriod.

A:

Whatdoesthatmean?

B:

Well,ifyousettheWaitPeriodatfiveminutes,thescreensaverwillkickinwhenyoursystemisuntouchedfor5minutes.

A:

Isee.

B:

AndfinallyyouclickontheApplybuttonhereandyourscreensaverisset.

A:

That'sgreat.Thankyousomuch.

B:

YoucanalsodownloadascreensaverfromtheInternet.TherearethousandsoffreescreensaversontheInternet,youknow.Youcandownloadoneandinstallitonyourcomputer.ThenyoujustrepeatthestepsI'veshownyoutosetitup.

A:

Really?

ImayaskyouforhelpagainifIhaveproblems.

B:

Anytime.

PartCAdditionalListening

HowtoSendanE-mail

M:

Iwouldliketosendane-mailtoafriendofmine.Couldyoutellmehowtodoit?

W:

Certainly.First,youchoosethee-mailprogramonyourcomputerandclickNewMessage.

M:

Allright.

W:

OK?

Well,thenyoustarttypingthenameoftherecipient.Theprogramremembersthenameandcompletesthee-mailaddress.Well,ifnot,youlookupthenameintheaddressbookorcontactlist.OK?

Well,ifyouwantotherpeopletogetcopiesofthesamemessage,yousendthem'CCs',whicharecopiesofthemessage.OK?

ThenyoupressReturnonthekeyboardandthenyoutypethesubjectofthemessage.Now,there'snoneedtoputthedatebecausethatgoesinautomaticallywhenyousendthemessage,togetherwiththetime.OK?

M:

Oh,yeah.

W:

Well,thenyoupressReturnagainandstartwritingthemessage.Now,ifyoumakeamistake,youjustpressBackspacetodeletethepreviousletterorwordandthentypeitagaincorrectly.

M:

Isee.

W:

Now,whenyou'vefinished,youreadthewholemessagethroughtomakesureitlooksrightandcontainstherightinformation.Now,ifyoudecideyouwanttochangesentencesaround,youcancopysentencesandpastetheminotherplaces.

M:

And...er...er...howaboutspellingandpunctuation,er...thatcanbecorrectedautomatically,can'tit?

W:

Well,yesandno.Youcanrunyourspellcheckerandthatmaybringupsomemis-typingsandthingslikethat.Butitdefinitelywon'tcatchthemall,soyoumustreaditthroughtocheckyourspelling,too.Andcheckyourpunctuationatthesametime.Nowifyounoticeamisspeltword,orifyouwanttochangeawordorsomethinglikethat,double-clickonthewordandtypethenewwordoverit.

M:

Fine.Th