Unit3TheInternetDiscoveringUsefulStructures课件-高中英语人教版3

Unit3TheInternetDiscovingusefulstructuresThePresentPerfectTensePassiveVoice

Youhaveslainanenemy.你杀死了一名敌人。Anenemyhasbeenslain.我方击杀一名敌方。Anallyhasbeenslain.我方一名队友被击杀。Yourturrethasbeendestroyed.我方防御塔被摧毁。Leading1.Youhaveslainanenemy.2.Anenemyhasbeenslain.slay

杀死v.slewslainFindthedifference现在完成时主动语态：have/hasdone现在完成时被动语态：have/hasbeendone什么是现在完成时？present(now)futurepast定义:①表示到现在为止已经完成或刚刚完成的动作。②表示过去发生的动作,强调结果或对现在的影响。③表示从过去开始并持续到现在的动作或状态。构成:

肯定：have/has+done

否定：have/hasnotdone

一般疑问：

Have/Has+主语+done

特殊疑问：特殊疑问词+have/has+主语+done现在完成时Reviewalready

已经（肯定句）

yet已经（否定句或者疑问句）recently/lately最近since/sincethen自从/从那时起eversince自那以来ever

曾经sofar/uptonow/tillnow/untilnow迄今为止foralongtime很长一段时间bynow到现在为止inrecentyears

在最近几年里in/during/overthepast/lastyears在过去的几年里常与现在完成时连用的时间状语1.I____________(finish)myhomeworkalready.2.She___________(noteat)sushibefore.3.Howlong______you_______(live)inthiscity?4.They__________(visit)threecountriessince2020.5.Thisisthefirsttimewe__________(see)afilminthecinema

6.Mr.Smith______Englishinourschoolfor10years.A.taughtB.hastaughtC.teaches2.—______you______thenewsciencemuseum?—Notyet.A.Have;visitedB.Did;visitC.Do;visit5.We______eachothersincewewerechildren.A.haveknownB.knewC.knowExercisehavefinishedhasn’teatenhavelivedhavevisitedhaveseenJan’slifehasbeengreatlyimprovedbytheInternet.MuchhasbeenwrittenaboutthewondersoftheWorldWideWeb.PassiveVoice：have/hasbeendoneTheInternethasgreatlyimprovedJan’slife.PeoplehavewrittenmuchaboutthewondersoftheWorldWideWeb.ActiveVoice：have/hasdone现在完成时：过去发生，对现在造成影响，“已经”现在完成时被动Activity1:Readthepairsofsentences.Underlineandcomparethedifferentverbforms.现在完成时的被动语态概念：现在完成时的被动语态强调一个发生在过去的被动性动作，它有两层意思：1)动作已经完成，强调对现在造成的影响或结果；2）主语与谓语动词之间为被动关系。结构：have/has+been+动词过去分词肯定式：have/hasbeendone...否定式：have/hasnotbeendone...一般问句：Have/Has+主语+beendone特殊疑问句：疑问词+have/has+主语+beendone现在完成时主动变被动“三变”：①

原句主语变为by的宾语②

原句宾语变为主语③

原句谓语由主动变为被动“三不变”：①原句意思不变②原句时态不变③原句主谓宾以外的成分不变TheInternethasgreatlyimprovedJan’slife.Jan’slifehasbeengreatlyimprovedbytheInternet.主语主语谓语

主动宾语宾语谓语

被动Ihavedownloadedthesoftwaretohelpmyphonebatterylastlonger.Someonehaslostanidentitycard.Thesoftwarehasbeendownloadedtohelpmyphonebatterylastlonger.Anidentitycardhasbeenlost.Changethesentencesintothepresentperfectpassivevoice.Theconductor（售票员）hassoldouttheticketssincelastweek._____________________________________________2.Thebosshasn’tapprovedmyapplicationyet._____________________________________________3.Athleteshavebrokenmanyrecordsthisyear.____________________________________________4.Theyhaveselected10studentsforthechoir.

____________________________________________主动变被动Manyrecordshavebeenbrokenbyathletesthisyear10studentshavebeenselectedforthechoir.Myapplicationhasnotbeenapprovedbymybossyet.Theticketshavebeensoldoutbytheconductorsincelastweek.Exercise1.Thehomework______________(finish)bythestudentsalready.2.Anewpark_____________(build)inourtownsincelastyear.3.Theletter_________________(notsend)yet.4.Manytrees_______________(plant)intheschoolgardenthisyear.5.Theproblem________________(solve)bytheteacherjustnow.Task1:Fillintheblankhasbeenfinishedhasbeenbuilthasn’tbeensenthavebeenplantedhasbeensolvedTask2:Proofreading1.Thebookhasbeenwrotebyafamousauthor.

→______________________________2.Thewindowshaven’tcleanedyet.

→______________________________3.Thecakehasbeenatebythechildren.

→______________________________4.Theprojecthasbeenfinishbytheteam.

→______________________________5.ThenewshasjustbroadcastedonTV.

→______________________________wrote→writtencleaned→beencleanedate→eatenfinish→finishedbroadcasted→beenbroadcastTask3:Translation1.这本书已经被翻译成多种语言。

→________________________________________2.这些花还没有被浇水。

→________________________________________3.新图书馆已经建成了。

→________________________________________4.这个问题还没有被解决。

→________________________________________5.那封信刚刚被寄出去了。

→________________________________________

Thisbookhasbeentranslatedintomanylanguages.Theseflowershaven’tbeenwateredyet.Thenewlibraryhasbeenbuilt.Thisproblemhasn’tbeensolvedyet.Theletterhasjustbeensent.Task4:

用正确的时态语态填空Lastweek,ourschool________(1)(organize)acharitysaletoraisemoneyforchildreninneed.Sofar,manystudents___________(2)(donate)theiroldbooks,toys,andclothes.I________(3)(clean)outmyclosetandfoundalotofthingsInolongerneeded.Thecharitysale__________(4)(hold)intheschoolgymsince2022.WhenIarrived,thegym________________________(5)(already,decorate)withcolorfulballoonsandposters.Manystudentsandteachers________(6)(come)tosupporttheevent.I________(7)(set)upmyownboothandsoldsomeofmyoldbooksandtoys.Itisthefirsttimethatwe__________(8)(raise)over5,000yuan.Themoney____________(9)(send)toacharityorganizationandhelpedchildreninpoorareas.I________(10)(feel)veryhappythatIcouldcontributetosuchameaningfulcause.organizedhavedonatedcleanedhasbeenheldhadalreadybeendecoratedcamesethaveraisedhasbeensentfeltTask5:Writing用现在完成时被动语态写一段话（至少5句），向你的朋友Tom描述你身边发生的事情。eg.ThenewmovieNeZahasbeenshownforalongtime.Somepeopleevenhaveseenitforthreetimes......_____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________DearTom,How