unit 3教案Word文档下载推荐.docx

unit 3教案Word文档下载推荐.docx

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Byfinishingthetimelineandthechart,helpstudentsgraspthebasicstructureandmainideaofthepassage.

考纲要求（教学重难点）：

Teachingimportantpoints教学重难点

Understandhowdetailsareusedtosupporttopicsentences.

教学内容

T:

Haveyouputthemintherightorder?

Youwillfinditafterreadingthepassage.Nowturntopage18please.

StepIIIReading

Skimming

Getstudentsreadthewholepassageandtrytogetthemainideaofit.

Afterreading

Whatdoes“I”inthetitlereferto?

Ss:

Computer.

Whatisthemainideaofthepassage?

Thepassageismainlyaboutthehistoryanddevelopmentofcomputers.

Scanning

Correct!

Nowreadthepassageandfinishthetimeline.Withthistimeline,youwillhaveaclearideaofthedevelopmentofcomputer.

Checktheanswers.

Thepassagehasthreeparagraphs.Findoutthetopicsentenceofeachparagraph,andthedetailsthatareusedtosupportthetopicsentences.Thencompletethechartinactivity2.

Suggestedanswers:

Para.1

Para.2

Para.3

Topicsentence

OvertimeIhavechangedquitealot.

Thesechangesonlybecamepossibleasmymemoryimproved.

Sincethe1970smanynewapplicationshavebeenfoundforme.

Supportingdetails

●Caculatingmachine

●Analyticalmachine

●Universalmachine

●PC

●Laptop

●Tubes

●Transistors

●Chips

●Network

●Web

●Communication

●Finance

●Trade

●Robots

●Mobilephones

●Medicaloperations

●Spacerockets

Fromthischart,youwillknowthebasicstructureofthispassage.Asyoumayhavefoundthetopicsentencesarenotstandingtherealone,theyaresupportedwithdetailsanddate,whichmakethetopicsentencesmoreconvincing.NowIwillplaythetapeofthispassage.Listenandfindout/underlinethedifficultwordsandexpressions.

Teachergivessomeexplanations.

Whatcanbe“overtime”replacedby?

Astimegoesby.

Howdoyouunderstandtheword“simplify”?

Look!

（ontheboard:

simple+-ify）.-ifyisasuffixwhichmeanstoturninto,makeorbecome.Forexample,beautify.Soifyouknowthemeaningof“simple”,youcaneasilygetthemeaningof“simplify”.Whocantellmeitsmeaning?

S:

Tomakesomethingeasierorlesscomplicated.

Whatdoes“it”inline9referto?

Itreferstothefactthatcomputerwasprogrammedbyanoperatorwhousedcardswithholes.

WhywasAlanTuringcalledcomputer’srealfather?

Iguessthat’sbecauseAlanmadecomputermorepowerful,whichcouldsolveanydifficultmathematicalproblem.

Whatdoes“thisreality”inline15referto?

Itreferstotherealitythatcomputerhadgrownaslargeasaroom.

Inparagraphtwo,therearetwosentenceswhichcontaintheuseof“so…that…”structure.Underlinethemandstudycarefully.

Showthefollowingonthescreen/board:

●Overtimemymemoryhasdevelopedsomuchthat,likeanelephant,IneverforgetanythingIhavebeentold!

●AndmymemorybecamesolargethatevenIcouldn’tbelieveit!

Helpstudentssumuptheformandfunctionofthisstructure:

Form:

so+adj./adv.+that+clause

Function:

Thisstructureisusedwhenemphasizingthedegreeoramountofsomethingbysayingwhattheresultis.

StepIVDiscussion

Dealwithactivity3onpage19.Letstudentsdiscusshowcomputershavechanged

ourlives?

Samplediscussion:

S1:

Ithinkit’simpossibletolivewithoutcomputers!

S2:

Whatmakesyousaythat?

Mygrandparentsdidn’tuseacomputerandtheywerestillabletoentertainthemselves,tooperatebigmachines,toanalyzedata,tomakerobotsandsoon.

Youareright.Butcomputersdochangethewaywelive.Theychangethewaywelearnbyprovidingdistance-learningprograms.Theychangethewaywecommunicatewiththeuseofe-mailandinstantmessenger.TheychangethewayweobtaininformationwithInternetsearchenginesuchasGoogleandBaidu.Theychangethewaywedealwithdocumentsandpictures.

Iagree.CanyouimaginewhatourlifewouldbelikeIfwecouldnotusecomputersanymore?

Wewouldgobacktotheworldwheneverythinggoesslowly.Forexample,sendmailsviatrainorairplane,whichtakesseveraldaysorevenlong;

gotolibrariestosearchforinformation,wherelimitedinformationareprovided;

spendlongtimetosolvedifficultmathematicalproblemsetc.Andontheotherhand,wemayhavemoretimeforoutdooractivitiesinsteadofspendingmuchtimeoncomputer.

Yes,computerschangedourlivesbothinagoodwayandinabadway.Itdependsonhowwemakeuseofit.Ihopewecanmakegooduseifit.

Doyouwanttoseehowcyberfriendsanswerthisquestion?

Lookatthescreen.

Showthefollowingonthescreenorletstudentsvisitthewebpage:

（Onethescreen）

User1

Computershavemadeiteasierforustoaccessawealthofinformationandhaveallbutrenderedprinterencyclopediasobsolete.Theyhavealsomadeiteasierandcheapertoadvertiseourbusinessanywherewewishanddobusinesswithanyoneanywhereintheworld.Onthedownsidehowever,computershavealsomadeiteasierforsexualpredatorstofindvictims,forcriminalstostealourhard-earnedmoney,andtoevenstealouridentity,somethingnearlyunheardofjustafewdecadesago.Also,childrenaremorelikelytositinfrontofacomputerandchatwhentheycouldjustaseasilyspeakwiththeirfriendsonatelephoneorgooutsideandplaylikechildrenusedtobeforethe"

computerrevolution"

.Aswithanynewtechnology,therearegoodandbadpoints,butintheendthegeneralpublicthroughtheiractionswilldeterminewhetherornotcomputershaveactuallyimprovedourlives.

User2

Ofcourse!

!

Theyhavechangedthewayweshop,play,chat,workandmore.

User3

Theyhavemadeusalazygeneration.

User4

Acomputerhaschangedmylifecertainlyevenstillataveryyoungage.It'

sfulfilledmydreams,knowledgeandmuchmore.Forsomeit'

sgainedthememploymentandgivingotherssomethingtodo.It'

sopenedanewworldofgaming,chattingandfindingadviceandinformation.ICOULDN'

TLIVEWITHOUTONE!

User5

Well,theymadeourliveseasier,themadeuslazierandtheygaveusthechanceto

havesomeadventurewhenwearebored.

User6

Majorityof"

addicted"

computeruserslack"

reallife"

socialskillsthesedays.

User7

Theyhurtmyeyes.

User8

Computerschangeourattitudes,thewaywelive,thewayweexpressourselves,thewaywearetooothers,viewsonlife,viewsoverall,howwedress,whatwelistentoo,whatwethinkofoneanother,howwework,interests.Basicallyeverythingwithoutcomputerswewouldn’thavetheinternetandlikenewspapersradiosmagazinesandtelevisionwegettheseallontheinternet.Thesechangehowwearesobasicallyeverythingaboutit.Alsowegetaddictedandlearnaboutthingsthatmaybeweshouldn’t.Alsocangetintotroublee.g.downloading,piracyalldonewithacomputer.Goodthingsarethatcomputershavehelpedreachforwardintothefuture.

Helpswithtechnology,educationandwillhelpthefuturegenerations.Sooneverythingwillberunbycomputersthegoodthingforusiswedon’thavetoliftafingerthebadthingiswillcomputerstakeover.

StepVHomework（retelling）

Supposeyouworkforaninformationtechnologymagazine.Writeashortpassagewhichbrieflyintroducesthehistoryanddevelopmentofcomputers.Don’twriteinthefirstperson.

授课反思：

学生举一反三的能力仍人须加强

TheSecondPeriodLanguagestudy

3periods

a.重点词汇和短语

revolutionnetworksimplifysummobilesolveexploretotallyanyhowfinanceartificialtechnologyintelligentapplicationWebrealitylogically

b.重点句子

Astimehadgoneby,Ihavebeenmadesmallerandsmaller.

Ihavebeenusedinofficesandhomessincethe1970s.

Overtimemymemoryhasdevelopedsomuchthat,likeanelephant,IneverforgetanythingIhavebeentold!

Sincethe1970smanynewapplicationshavebeenfoundforme.

Ihavealsobeenputintorobotsandusedtomakemobilephonesaswellashelpwithmedicaloperations.

IhaveevenbeenputintospacerocketsandsenttoexploretheMoonandMars.

Enablestudentstolearnthemeaningsanduseofsomekeywordsinthereadingpassage.

Enablestudentstolearntheformandfunctionofpresentperfectpassivevoice.

Bywritingapoemusingpresentperfectpassivevoice,enablestudentstousethestructurefreelyandcreatively.

Teachingimportantpoints教学重点

Howtochangethesentencesintothepresentperfectpassivevoice.

Teachingdifficultpoints教学难点

Personalization,Inductionandimitation.

StepIRevision

Checkthehomework.Asktwostudentstoreadthepassagetheyhavewritten.Theirpassageshouldbebriefandincludethekeyinformationorfactsaboutthedevelopmentofcomputers.

StepIIDiscoveringusefulwordsandexpressions

Lookatactivity1.Thesearethemeaningsofsomewordsorexpressionsinthetextwelearnedyesterday.Findoutthesewordsorexpressions.

Nowlookatthewordsinactivity2.Doyouknowtheirmeanings?

Checktheirmeaningsinyourdictionaries.Thencompletethepassagewiththewords.

Nowactivity3.Lookatthephrasesinboldinthestory.Whatdotheyhaveincommon?