Unit3《Computers》教案4（人教版必修2）

Teachingplanfor

Unit3computers

I.TeachingGoals:

1.Talkaboutcomputers

2.Describethingsandhowtheywork

3.Giveadviceandmakesuggestions

4.UsethePresentContinuousPassiveVoice.

II.TeachingTime:Fourperiods.

TheFirstPeriod

Teachingaims:

1.Learnandmasterthefollowing:solve,creative,agreeandworth

2.Trainandimprovethestudents'speakingability.

TeachingImportantPoints:

1.Trainthestudents,listeningandspeakingabilities.

2.Masterthenewwords,andmakethestudentslearntogiveandexpresstheiradvice.

TeachingDifficultPoints:

Howtoencouragethestudentstofinishthetaskoflisteningandspeaking.

TeachingMethods:

1.atape-recorder2.theblackboard

TeachingPresentation:

StepI.Greetings.

StepII.Presentation.

T:Boysandgirls,pleaseansweronequestion:Doyouheardabout"286”

“386”“486”and"586”?

Ss:Yes.Theyarecomputers.

T:Whichisthemostadvancedcomputerintechnology?

Ss:“586”.

T:Yes,youareright.Fromthesenumberswecanseetheadvanceof

Technology.Ifyouwanttomaketechnologyadvance,youmusthave

Creativeabilityandtheabilitytosolvetheproblems.NowIwanttoseehowcreativeyouareand

whetheryoucansolvethefollowingproblems.PleaseturntoPage57,Unit9Technologyandlook

atthefirstpartWarmingup.

StepIII.Warmingup

NowIgiveyou2minutestoconsiderhowmanyusesforthefollowing

Items.(Group1:atoothpickGroup2:asock

Group3:aplasticbag.Twominuteslater,collectthe

Answers)

Suggestedanswers:

1.Atoothpickcanbeusedtogetbitsoffoodoutofthespacebetweenteeth;

Canbeusedtoeatsmallthings;canbeusedtoopenabottle...

2.Asockcanbeusedtokeepyourfeetwarmandclean;canbeusedtomakeGlovesforlittlebaby;

canbeusedtofillsomepresentsinon

Christmas...

3.Aplasticbagcanbeusedtocarrythings;canbeusedtocovertheseatofa

Bikewhenitisraining;canbeusedasaglovewhenwepick

Upsthoilyordirty;canbeusedtocoverourhairwhenwe

Aredyeingit;canbeusedasatoy...

T:Welldone.NowIgiveyou3minutestosolvenextproblem:makeasmanyWordsasyoucanby

movinganysideasmanystepsasyouwish.(After3minutes,youcancollecttheanswer).

Suggestedanswers:slop,side,soot,stem;star;coat,code,cram;door;poem;rate;aide,atometc.

T:Nowlet'scometo"Trueorfalse”.(T,F,T)

StepIV.Listening.

Nowpleaselistentothetapeandguesswhatisbeingdescribed.Whilelisteningtrytofinishthe

formonPage57.

Listenforthefirsttimeandwritedowntheobjectdescribed.

Listenagainandwritedownitspossibleuses.

Listenforthethirdtimetochecktheanswer.

Listeningtext:

1.Theseareverysimple.Twosticks,about20centimeterslong.Theyareusually

madeofwood.Youholdtwosticksinonehand.Youputonestickbetween

twoofyourfingers,andyouholdtheotheronewithyourthumb.Thesethings

canbedifficulttouseatfirst,butyouwillsoonleamhowtopickupeven

smallpiecesoffood.

2.Thisthingisverypopularanduseful.Almosteveryonehasonethesedays.

Youcanseepeopleusingthisthingonthebus,whentheyarewalking,orat

Home.Itisusuallysmall,aboutthesamesizeasyourhand,anditcomesinmanycolours.Thereare

severalbuttonsonit,somefornumbers,othersforotherthings.Itcanbeputinyourpocketorina

smallbag.Withit,youcantalktopeoplefaraway.

3.Thisisalargeboxwithabigdoor.Ifyouopenthedoor,alightcomesonand

youcanseewhat'sinside.You'dbetternotleavethedooropenfortoolong,

becauseitisnotgoodforthethingsinside.Youmightcatchacold,ifyou

standinfrontoftheopendoor.Thereareseveralshelvesinside,someinthe

boxitself,someinthedoor.Youusuallyfindthislargeboxinthekitchen.

Answerstolisteningtext.

ObjectdescribedPossibleused

I.ChopsticksEating,openingabottle,

2.CellphoneMakingphonecalls,sendingpictures,sendinge-mail...

3.RefrigeratorKeepingfoodfresh,keepingdrinkscool...

StepV.Speaking.

Let'slookatthethirdpart“Speaking”.Janewantstobuyacellphone.Beforeshebuysone,sheasks

herparentsandherbestfriendwhattheythink.

Group1:youareJane.Youwanttobuyacellphone.Youthinkthatacellphoneisveryuseful.Give

yourreasons;

Group2:youareJane'sbestfriend.YoudonotthinkJaneshouldbuya

Cellphone.Giveyourreasons;

Group3:YouareJane'smother.YoudonotthinkJaneshouldbuyacellphone

Giveyourreasons;

Group4:YouareJane'sfather.YouthinkthatJaneshouldbuyacellphone

Giveyourreasons;

(2minuteslater,youcancollecttheiranswers)

Possibleanswers:

Janel.IcanuseacellphonetocallmyParentsifImissthemorifIamLate.2.1canuseittocallfor

help.3.1canuseittostayintouchwithMyfriends.Jane'sbestfriend1.Wedon'treallyneed

cellphones.2.Wearenotallowedtousecellphoneinschool.3.Itisbettertousethemoneyfor

Somethingmoreimportant.

Jane'smother1.cellphonesaretooexpensive2.JaneshouldnotspendtoomuchTimeonthe

phone.3.JaneistooyoungtohaveaCellphone.Jane'sfather1.IfJanehasacellphone,Icanalways

findoutwheresheis.2.AcellphonewillhelpJanefeelsafe3.Janecanuseacellphonesend

messagestoherfriends

languagepoints.

1.solvevt.findananswertoaproblemwhichisusuallydifficulttodealwith

a.Hedidn'tknowhowtosolvetheproblem.

b.Atlasttheysolvedtheproblemwiththeteachefshelp.

2.absolutelyadv(1)completely,perfectly,wholly(2)Sure,certainly

a.Itisabsolutelynecessary,b.Youagree?Oh,absolutely.

3.agree+prepphrvi+todosth/thatclausevt

a.Doyouagreewithme?——Yes,Iagree.

b.Weallagreewithwhatyousaid.

c.Doyouagreetohisplan?

d.Iagreetohisproposal/arrangements.

e.Theboyandthegirlagreedonthedateofthenextmeeting.

f.Theyagreedonmakingaearlystart.

g.HeagreedtohelpmewithmyChemistry.

h.Theyagreedthatweshouldbuildanewlibrary.

4.worthu.n.priceorvalueadj(1)deserving(2)equalinvalueto

a.ajewelofgreatworth

b.apersonofgreatworth

c.twentydollars'worthofsugar

d.Howmuchisthebookworth?It'sworth80yuan.

e.Thisproblemisworthnotice.

f.Itisworthourwork.

g.Weworkhardbutitisworthit.

h.Knowledgeisworthworkingfor.

i.Thisproblemisworthdiscussingcarefully.

j.Whateverisworthdoingatall,isworthdoingwell.

k.Thisproblemisworthconsidering.

Homework:1.Previewthetext.

2.Recitethenewwords.

BlackboardDesign:

Unit9TheFirstPeriod1.solvevt2.absolutelyadv3.agreetodo/thatwith/on/to4.worthadj

P.S.__________________________________________________________

The2-3PeriodReading

TeachingAims:

1.Trainthestudents*readingability.

2.Learnandmasterthefollowingwords,phrasesandsentencestructure:

Throughouttheworld;morethan;add...toremindsbabout;nomatterwh-;dare;Incaseof;

breakdown;room;comeupwith;

TeachingImportantPoints:

1.Learnandmasterthewords,phraseandsentencepatternsabove

2.Howtomakethestudentsunderstandthetextbetter.

TeachingDifficultPoints:

1.Masterthedifferencebetweenthefollowingphrases:

Nomatterwh-/wh-everincase/incaseof

2.HowtoUnderstandthetextscompletely.

TeachingMethods:

1.Fastreadingtoletthestudentsgetthegeneralideaofthetext.

2.Question-and-answeractivitytoletthestudentsgetthedetailedinfoiTnationinthetext.

3.Makingsentencestohavethestudentsmastersomelanguagepoints.

TeachingAids:

1.ataperecorder2.ablackboard

TeachingProcedures:

StepI.Greetings.

StepII.Presentation

T:Asweknowthatlifetodayisquitedifferentfromlifeinthepast.Hereisaexample.(usinga

cellphone)Look,what'sthis?

Ss:Acellphone.

T:Haveyoueverusedone?

Ss:Yes/No.

T:Whyarenotthestudentsallowedtousecellphones?Let'sreadthetext“Life

Onthego”

StepIII.Reading

Readthetextquicklytogetitsgeneralidea.ThenanswerthequestionsontheBb.

I.Doschoolsagreetousephonesinschools?Howabouttheirparents?

(Someschoolsdon'tagreephonesareusedinschool.Nordotheirparents.Theyworrythattheir

childrenwillspendtoomuchtimeandmoneyonphonecalls)

2.WhatdoesWangMeithindisthemostusefulinvention?

(Shethinksthecellphoneisthemostusefulinvention.)

Readthepassageagaintofindoutthemainideaoftheparagraphs.

Suggestedanswers:

Par.1:WangMeiisanexampleofChineseteenagerswhohavecellphones.

Par.2.:Cellphonescanbeusedformanythings.

Par.3:Cellphonesalsocauseproblems.

Par.4:Thereareseveralreasonswhyteenagerslikecellphones.

Par.5:WangMeiexplainwhyshelikeshercellphoneandwhatsheusedit

For.

T:Nowyouhaveknownthegeneralideaofpassageandthemainideaofeachparagraph.Nowread

Paragraphs2,3and4tounderstandthedetailsandfillintheblanksonPage60.(Aftersome

minutes,teacherasksthreestudentstoreadtheanswer.

Suggestedanswers:

Forexample:Cellphonesareusedascameras,radiosandelectroniccalendars,

Andtosende-mail,surftheInternet,playgamesandenjoymusic.

Inschool:disturbstudentsandteachers.

Athome:spendtoomuchmoneyonphonecalls.

Reasons:

1.Theyneedtostayintouchwithfriendsandfamily.

2.Theycancallforhelpincaseofanemergency.

3.Theythinkthecellphoneisawaytohavefunandbecool.

StepIV.Languagepoints

1.“lifeonthego”移动人生

liveahappy/hard/busy...life

onthego是介词短语作定语后置，意思是“忙个不停”；“四处奔走”；

“跑来跑去”的意思。

Herchildrenkeepheronthegoallday.

Wecan'tkeepsmallchildrenstill,theyarealwaysonthego.

介词on在这里表示“处于。。。。。。情况之中”

TheyareonavisittoChina.

He'sgonetoHKonbusiness.

Thego可以表示“流行，时髦”常用于口语中。

Hiphophasbecomequitethegoamongyoungsters.

Hulahoopseemstobecomingbacktothegoatpresent.

2.throughouttheworld=allovertheworld

allthroughtheday=duringtheday/thewholeday/alldaylong

3.morethan(1)超过，多于(2)不只是，非常

a.Hehasmorethantwentyyuanwithhim.

b.By1993,thenumberofthedeeratthecenterhadincreasedfrom20tomorethan200.

c.ThetraveltoBeijingismorethansightseeing.

d.Heismorethanourteacherandheisourfriend.

e.Bambooisusedformorethanbuilding.

f.Moderncellphonesaremorethanjustphones——theyarebeingusedas

Camerasandradios,andtosende-mailorsurftheInternet.

g.Heismorethanhappy.

Morethan与其说。。。不如说。。。

h.Heismorelikeaspearthananythingelse.

i.Heismorediligentthanclever.

j.Tomismorefrightenedthanhurt.

Nomore...than...并不比。。。更。。。，都一样不

k.YouarenomorebeautifulthanI.

1.Thetrainticketisnomorecheaperthantheplaneticket.

m.KaterunsnofasterthanJane.

n.Thebookontravelisnomoreinterestingthanthebookonfood.

Nomorethan仅仅，只不过

a.Heisnomorethanalittleboy,anddon'tbeangrywithhim.

b.Therearenomorethan5studentsleftintheclassroom.

c.Heknowsnomorethanfoodinhisworld.

Notmore…than...不如。。。notmorethan至多，不超过

o.Thisdictionaryisnotmoreusefulthanthatone.

p.Inmypocketthereisnotmorethan5dollars.

4.beusedas/beusedtodo/beusedfor/beusedby

a.Computersshouldn'tbeusedasatoolforplayinggames.

b.Computerscanbeusedtoworkoutcomplicatedmathematicalproblems.

c.Pensareusedforwriting./Woodcanbeusedformakingdesksandchairs.

d.Thisbedisusedbymypetdog.

5.addvt.(1)力口；增加；添加add...to...(2)补充说道

addtovi.增添；增加addupto总计达

a.Headdedsomesalttothesoup.

b.Add5to3andyouhave8.

c.Thefireisgoingout;willyouaddsomewoodtoit?

d.”Yougofirst."'Tilcomelater,5,headded.

e.Themusicaddedtoourenjoyment.

f.Thelightsaddtothebeautyofourcity.

g.Theexpencesaddupto95yuan.

5.latest/lately/late

d.Everyonelikestoreadthelatestnews.

e.Mr.Smith'slatestnovelhasbeenpublished.

f.Whathaveyoubeenbusywithlately?

g.Youarelateagain.Don'tcomelatenexttime.

6.remindvt+sbof/aboutsth+sbtodosth+that表提醒

+sbofsth+sbofdoingsth表使。。。想起

a.ThePicturesremindedthemofthedayswhentheylivedinthesame

Room.

b.Thestoryremindsmeofmyschooldays./ofhavingdonewrongwhen1was

Young.

c.Pleaseremindmetotakemedicinetomorrowmorning.

d.Sheremindedhimthathehaditbefore./thattheyhadmeteachother

Before.

7.daremod.v/vt

a)Hedoesnotdaretotakeithome.=Hedaren'ttakeithome.

b)Doyoudaretoaskhim?=Dareyouaskhim?

8.nomatterwhat与whatever

a.Nomatterwhereyougo,you'llfindnewfriends.=

Whereveryougo,you'Ufindnewfriends.

b.Whateverhesays,wecan'tbelievehim=

Nomatterwhathesays,wecan'lbelievehim.

c.Whateverhesaysisn'ttrue.

d.IwilldowhateverIcantohelpyou.

e.Givethebooktowhoeverwantsit.

8.incaseof+名词/短语（介）；假使，要是。。。的话；

incase+从句也可单独使用，置于句尾，意思是（1）要是。。。的话；万一。。。的话（2）以

防，免得

a.Incaseoffire,ringthealarmbell.

b.Havingacellphonealsomakesusfeelsafer,sincewecancallforhelpincaseofanemergency.

c.Incasehecomeshere,tellhimthatIwillgotomeethim.

d.Putonthecoat,incaseitsnows.

e.Pleasetakeanumbrellaincaseitrains.

f.Itmayrain;you'dbettertakeanumbrellaincase.（以防万一）

Inanycase不管怎样；Inanycase,parentsshouldn'tbeattheirchildren.

Inthatcase既然这样/那样，用作状语

Inthatcase,youhavetowait.

inthecaseof就。。。来说；至于。。。

Inthecaseofcomputer,itisjustsoexpensive.

10.1shouldbehomeinabouttenminutes.（表示可能性或推测）

Heshouldhavearrivedtherebynow.他现在应该到那了o

11.1thinkit'sthemostusefulinventionever.（见第四点）

（1）用于肯定句中，比always意味稍强。永远；总是；一向

Heworkedashardaseverwhenhegotaheadache.

Theoldwomanrepeatedeverthesamewords.

（2）用于条件句/一般疑问句/否定句中，译成：曾经；在任何时候Didyouevermeethimwhile

youwereinLondon?

Haveyoueverheardofhim?

Ifyoueverseehim,pleasegivethepentohim.

Nothingeverhappenedhere.

（3）强调特殊疑问句中的疑问词，相当于onearth究竟，到底

WhereeverdidyouseeMr.Read?

HoweverdidIforgetit?

Whoevercanitbe?

（4）与比较级、最高级连用译成：比以往任何时候

It'sthenicestthingever.这是空前的最好的东西。

Heisangrierthanhehaseverbeen.

11.collectmoneyfor../raisemoneyfor

12.effect（c.u）效果；作用；影响

a.Ithadsuchabadeffectuponhim.

b.Theeffectsofthemedicineweregoodtothepatient.

c.Itmaybetheeffectoftheillness.

Haveaneffecton对。。。产生影响

Ithadanimmediateeffectonhisthinking.

Takeeffect生效；开始发生作用

ThenewlawwillnottakeeffectuntilJuly.

Themedicineisgoingtakingeffect.

Homework:1.RecitethewordsinUnit9.

2.FinishtheexercisesonPage135.

BlackboardDesign:

LifeonthegoLanguagepoints:1.morethan2.remind3.allow4.nomatterwhat5.incaseof/in

case

P.S.____________________________________________________________

TheFourthPeriod

TeachingAims:

1.Dosomereadingandgetthegeneralideaofanewparagraph.

2.Dosomewriting.

MainPoints:

1.Howtoguessthemeaningsofthenewwords.

2.Howtotrainthestudents*writhingability.

Difficultpoints:

Improvethestudents,integratingskills-readingskill

TeachingMethods:

Askandanswerquestions.

Teachingaids:

1.ablackboard

Teachingprocedures:

StepI.Greetings.

StepILRevisethelanguagepointsinthetext

Onthego;add.,to...remindsbof/aboutsth

Stayintouchwith;incaseofanemergency...

StepIII.Readingtext.

T:Nowadayscomputersarewidelyusedinallkindsoffields.Withthem,

Manythingsbecomeeasierandfaster.Canyouimaginewhatwillhappentoourworldinthefuture?

(Teachercollectsthedifferentanswersfromthestudentsandsaysthefollowing.)Todaywe'Hread

apassageaboutarobotnamedQI2.Ithinkyouareinterestedinit.PleaseturntoPage62.While

youarereading,youmayfindsomewordsandphrasesdifficulttounderstand.Readthepassage

andfindthemout.

(Afterawhile,teacheraskstosaythedifficultwordsandphrasesandhelp

themguessthemeanings.)

T:Nowreadthepassageagainandanswersomequestions.

1.Whatistheearthruledbyintheyear2374?

2.Whathappenstohumanbeingsbythen?Whatabouttheworld?

3.WhatdoestheleaderofthehumanbeingsdecidetodowithQ12?

4.CanQ12bedefeatedbyforce?

5.Whatsolutiondothestudentscomeupwith?

Suggestedanswers:

1.TheearthisruledbyagreatcomputernamedQ12thatusedrobotstomakepeopleworkforit.

2.HumanbeingshavetodoeverythingQ12tellsthemto.Theworldisdarkanddirty,andhuman

beingshavenoroomforhappinessandfun.

3.TheleaderofthehumanbeingshasdecidedtosomethingtostopQ12and

Bringthemachinesandpeoplebacktogether.

4.Itcan'tbedefeatedbyforce.

5.Thestudentscomeupwithapeacefulsolution.TheywilltrytoteachQ12aboutloveand

friendshipinorderthatthey

Languagepoints

1.takeover

a.Hetookoverthephoneandsaidtohiswifeattheotherend“Iloveyou把。。。接过来

b.Thearmytookovertheadministrationafterthewar.接管

c.ThemenfromRedcrossarecomingtotakeovertherefugeecampso接收

d.OneoftheboardofdirectorshasresignedandMr.Brownwillpossiblytakeover.接任

e.Nowadaysvarioustypesofmouthcoverstakeover.盛行起来

2.breakdown失败；损坏；出毛病

a.Theplanbrokedown.

b.Theliftbrokedownyesterday.

3.wonderc.n奇迹；奇观；奇才u.n惊奇；惊叹

vt.想知道,极欲知道vi对。。。感到奇怪、惊异

a.TheGreatWallisoneofthewondersoftheworld.

b.Heisawonder.Hecouldwritewhenhewasonlyoneyearold.

c.Iwonderwhatreallyhappened.

d.Iwonderifshecancomeherethisafternoon.

e.Iwaswonderingaboutthat.

f.Theylookedatmeinwonder.

g.Theywerefilledwithwonder.

h.Therewasalookofwonderinherface.

Nowonder难怪；不足为奇

i.Nowonderyouareoftenlate.

j.Nowonderhelovesyouso.

k.ItisnowonderthatsomanypeoplehavebeenstrickenbytheWestLake.Itissobeautiful.

4.defeatvt战胜，击败vi使失败，使落空

n.战败，失败，挫败

a.Ourarmydefeatedtheenemy.

b.OurclassdefeatsClassTwoatbasketball.

c.Theirhopesweredefeated.

d.Thefirstrevolutionendedindefeat.

e.Theywouldnotadmitthisdefeat.

5.forceu.nvt强迫，迫使

a.Shedidn'tusemuchforce.力量

b.Thethieftookthemoneyfromtheyoungmanbyforce.暴力

c.Thenavyisoneofthearmedforces.兵力

d.Iforcedhertodoit.

e.Weforcedtheenemyintosurrendering.

f.Hewasforcedintothehouse.

6.comeupwith无被动语态（1）赶上（2）提出；提供

a.Weshallhavetoworkhardtocomeupwiththem.

b.Ihopeoucancomeupwithabetterplanthanthis

c.Youshouldcomeupwitharesponse.

Comeupto达到，符合

euptostandard

e.Thewatercomeuptohiswaist.

f.Theconcertdidnotcomeuptoexpectations.

Comeup（1）走近（2）上来，上楼

（3）长出，发芽（4）发生（5）提出、提及

g.Theseedshaven'tcomeupyet.

h.Tilletyouknowifanythingcomesup.

i.Yourquestioncameupatthemeeting.

7.takestepstodo...采取措施做某事（在63页）

TheChinesegovernmenthast