必修二 unit3 Discover useful structures 【教材精讲精研】 高一英语上学期 （人教版2019必修第二册）

4321LeadinReviewSummaryExercisesDiscoveringUsefulStructures5LanguagepointsPresentperfectpassivevoiceLookatthewayyourfacehasbeenwashedLookatthewayyourteethhavebeenbrushedLookatthewayyourshoeshavebeencleanedYou’dbetterdothemagain.LookatthewaytheflowershavebeenplantedLookatthewaythegrasshasbeencutLookatthewaythepathshavebeensweptIhopethatyou’llcomehereagain.AppreciateapoemWhat’sthecommonverbformofthesesentences?Verbform:presentperfectpassivevoicehave/hasbeendoneLeadin1定义

表示动作已经完成，强调对现在造成的影响和结果。常与一些副词连用，如already,ever,never,recently，lastly,just,yet等，通常把副词放在助动词have或has的后面，有时候也可以放在句末。

表示一直持续到现在的动作或状态。常与foratime,since,howlong,sofar等表示一段时间的时间状语连用。

*Thechildhasbeetakencareofbygandmaalltheseyears.

这些年来，孩子一直由奶奶照看。Review例2：HavetheybeensentabroadtostudyEng-lish?他们已经被派往国外学英语了吗?

例3：Whohasbeeninvented?谁受到了邀请？2构成陈述句主语+has/havebeen（not）+P.P.+...例1：Hermotorbikehasbeenstolen.她的摩托车盗了。一般疑问句Has/have+主语+been+P.P.+...?特殊疑问句特殊疑问词+have/has+been+P.P.+...?现在完成时的被动语态的句式：Theresearchhasbeendonesuccessfully.现在完成时被动语态的肯定式：have/hasbeendoneTheauthor’snewstoryhasnotbeenpublished.现在完成时被动语态的否定式：have/hasnotbeendoneHashiswashingmachinebeenrepaired?现在完成时被动语态的一般疑问句：把have/has提到主语的前面

Whohasbeeninvited?现在完成时被动语态的特殊疑问句：特殊疑问词+have/hasbeendoneSummary1.Readthepairsofsentences.Underlineandcomparethedifferentverbforms.Jan'slifehasbeengreatlyimprovedbytheInternet.

TheInternethasgreatlyimprovedJan'slife.MuchhasbeenwrittenaboutthewondersoftheWorldWideWeb.PeoplehavewrittenmuchaboutthewondersoftheWorldWideWeb.

2.Changethesentencesintothepresentperfectpassivevoice.

EXAMPLE

They'vebuiltakindofnewPCwithmorefunctions.--AkindofnewPChasbeenbuiltwithmorefunctions.

1Ihavedownloadedthesoftwaretohelpmyphonebatterylastlonger.2Someonehaslostanidentitycard.3HaveyouconfirmedtheWi-Fipassword?4Haveyoupressedthebuttonyettocopythefile?5Hasanyonemadeacommentabouttheonlinedatabase?

Answers:1Thesoftwarehasbeendownloadedtohelpmyphonebatterylastlonger.2Anidentitycardhasbeenlost.3HastheWi-Fipasswordbeenconfirmed?4Hasthebuttonbeenpressedyettocopythefile?5Hasa/anycommentbeenmadeabouttheonline

database?一、用动词正确形式填空。1.FirstasaPCandthenasalaptop,I____________(use)inofficesandhomessincethe1970s.2.Over

timemymemory______________(develop)somuchthat,likeanelephant,IneverforgetanythingI___________(told).3.Since

the

1970smanynewapplications_____________(find)forme.4.Ihavealso___________(put)intorobotsandusedtomakemobilephonesaswellas______(help)withmedicaloperations.5.I____________________(put)intospacerocketsandsenttoexploretheMoonandMars.has

developedhave

been

told

have

been

used

have

been

foundbeenputhelphave

evenbeenput

Exercises二、用将下列句子改成被动语态。1.

Theyhavefinishedtheconstructionofthenewrailwaylinesbynow.Theconstructionofthenewrailwaylineshasbeenfinishedbythembynow.2.Wehavebuiltanewlibraryandagymnasiuminourschoolthisyear.Anewlibraryandagymnasiumhavebeenbuiltinourschoolthisyearbyus.3.Thecarfactoryhasproducedagreatmanyfinecarssincethetechnologicalrevolution.Agreatmanyfinecarshavebeenproducedbythecarfactorysincethetechnologicalrevolution.Ourartfestival____________(hold)nextmonth.Recently,manyEnglishplays_____________(try)andwefinallychooseashortEnglishplay.Sincethen,we___________________(practice)thesedays._________(know)thatyouhavemuchexperienceinEnglishplays,wehopeyoucangiveussomeadviceonit._______________(tell)theeffectivewaytopracticeandperform,westillneedyourfurtherguidance.We__________________(practice)attheschoolhallthisThursdayafternoon.We_______________(appreciate)itverymuchifyoucouldgiveussomesuggestions.willbeheldhavebeentriedhavebeenpracticingKnowingHavingbeentoldaregoingtopracticewouldappreciateIn1908,theOlympicGameswasheldhereforthefirsttime.TheOlympicGameshasbeenheldinmanycountriessincethe1900s.Hewasinvitedtodeliveraspeechlastweek.Hehasbeeninvitedtodeliveraspeechtomanycompaniessincehewasfamous.一般过去时的被动语态现在完成时的被动语态一般过去时的被动语态现在完成时的被动语态拓展Hehasbeentoldmanytimes,andhefinallyunderstoodit.Havingbeentoldmanytimes,hefinallyunderstoodit.Thepoorhavebeenoppressedandexploitedforsolong.Thepoor,havingbeenoppressedandexploitedforsolong,tookuptheirgunsandknivestokillrichnobles.现在完成时的被动语态现在分词完成被动式现在完成时的被动语态现在分词完成被动式1.We’vedonealotofworkonit,butwe_______________(finish)yet.2.Tom________________(work)inthelibraryeverynightoverthelastthreemonths.3.Morepublictransport_____________(build)inChina,makingiteasierforpeopletotravel.4.Progress_________(be)sofarverygoodandwearesurethattheworkwillbefinishedontime.5._____________(eat)atthecafeteriabefore,Tinadidn’twanttoeatthereagain.havenotfinishedhasbeenworkinghasbeenbuilth