Unit3ComputersLearningaboutlanguage1.Findthewordorexpressionforeachofthefollowingmeaningsfromthetext.1._________completechangeinwaysofthinking,working,etc.2.________connectedcomputersystem3.________tomakethingseasier4.________tofindtheanswerusingnumberscalculatesimplifyrevolutionnetworkDiscoveringusefulwordsandexpressions5._______canbemovedeasilyfromplacetoplace6.________toworkouttheanswertoaproblem7._______totravelaroundanareatofindoutaboutit8.______completely9._______anyway10._______activityofmanagingmoneyfinanceanyhowtotallyexploresolvemobile2.Completethepassagewiththewordsbelow.artificialtechnologyintelligentWebapplicationsexplorerealitylogicallyMybrotherwasveryinterestedincomputersandenjoyedwritingprogramsofhisown.HeusedtodownloadinformationfromtheInternetandmadegooduseofit.Helikedto_______theWorldWide_____andexploreWebusedtheInternettocommunicatewithcomputerprogrammersallovertheworld.WhenhewenttouniversityhestudiedIT(information__________)anddevelopedaspecialinterestin________intelligence.Afterdevelopingspecial__________ofthecomputer,hehopestodesignan_________robotwhichcanthink________andlooklikeahumanbeing,butin______hehasalongwaytogo.technologyartificialapplicationsintelligentlogicallyreality1.Lookatthefollowingsentence,payingattentiontotheunderlinedpart.EXAMPLE:OvertimeIhavechangedalot.Canyoupickoutmorethantwosentencesinthepresentperfectpassivevoicefromthereadingpassage?Discoveringusefulstructures1.FirstasaPC(personalcomputer)andthenasalaptop,Ihavebeenusedinofficesandhomessincethe1970s.2.Overtimemymemoryhasdevelopedsomuchthat,likeanelephant,IneverforgetanythingIhavebeentold.3.Sincethe1970smanyapplicationshavebeenfoundforme.4.…2.Changethefollowingsentencesintothepresentperfectpassivevoice.1.Anewpersonalcomputerhasbeenboughtbymyfriend.2.Mycomputerhasbeenrepairedbytheshopveryquickly.3.Mycomputerhasjustbeenattackedbyanunknownvirus.4.Theproblemhavenotbeensolvedbyusyet.5.Thecomputershasbeengivenawaytoalocalschoolbythecompany.6.Akindofintelligentrobothasbeendevelopedbythescientists.ThePresentPerfectPassiveVoice现在完成时的被动语态现在完成时的被动语态表示动作发生在过去,到现在已经完成或对现在仍有影响.定义1.现在完成时被动语态肯定句主语+has/havebeen+P.P.+...(P.P.=动词的过去分词形式)Hermotorbikehasbeenstolen.她的摩托车被盗了。Alltheofficeshavebeenlinkedbycomputer.所有的售票处由计算机联网工作。句型2.现在完成时被动语态否定句主语+has/have+not+been+P.P.+...Thetaskhasnotbeenfinishedyet.任务尚未完成。Manyskilledworkershavenotbeentrainedinthecompany.这家公司并没有培养多少熟练工人。3.现在完成时被动语态一般疑问句Hashe(she,it,单数名词)+been+P.P.+...?Hasanewcomputerbeenbought?买了一台新电脑吗?HavetheybeensentabroadtostudyEng-lish?他们已经被派往国外学英语了吗?4.现在完成时被动语态特殊疑问句疑问词+have(has)+主语+been+P.P.+...?WhathasbeenboughtbyTom?汤姆已经买了什么东西?Whohavebeenhelpedbythenewcomputer?谁已经得到这种新计算机的帮助?Howmanybuildingshavebeenbuiltinthisschool?这所学校已经建造了多少座大楼?Wherehasthecarbeenrepaired?这辆小汽车已经在哪里修理好了?注意1.副词的位置often,usually,always,never,hardly,seldom等副词置于have/has和been中间。如:[误]Suchamanhasbeenhardlybelieved.[正]Suchamanhashardlybeenbelieved.2.并不是所有动词都有被动语态1)happen,takeplace,breakout,belongto,cost,last等不及物动词或词组无被动语态。如：[误]GreatchangeshavebeentakenplaceinChinasince1978.[正]Greatchangeshave...
