Unit3TheInternetDiscoveringUsefulStructures课件-高中英语人教版

Unit3TheInternetDiscoveringUsefulStructures

1Studentswillgraspthestructureandusagerulesofthepresentperfectpassivevoice,anddistinguishitfromothertensesinpassiveforms.2Studentswillbeabletoaccuratelyapplythepresentperfectpassivevoiceincontextssuchastimeandconditionalclauses,anduseitproficientlyinwrittenandoralexpressions.LearningObjectivesTeachingFocusMasterthestructuralrulesofthepresentperfectpassivevoiceanditsapplicationinexpressingactionscompletedwithcurrentrelevanceorcontinuouseffects.TeachingChallengesDifferentiatethepresentperfectpassivevoicefromthepresentperfectactivevoiceandthefutureperfectpassivevoice,especiallyincomplexclauseswheretensesubstitutionoccurs.TeachingFocusandTeachingChallengesPart1Lead-inLead-inEnjoythesong！Letmeknowifwe’reonLetmeknowifwe’reoffLetmeknowI’msittinghereinthemiddleoftheroadWithmyclothesonmybackwonderingwhereI’mgonnagoThrowntothegroundnotaloverbutagirlLookingbackatthedayswhenIdidn’tknowtheworldLead-inEnjoythesong！I’________________bythewaysideGotdraggedoutbytheriptideTakemebacktothedaylightIknownowwhatitistoSinksolowthatyoucan’tmoveI’_______________byyouI________________byyouLetmeknowwhattodoIsitallgoneforyouvebeenthrownvebeenparalysed’vebeenparalysedPart2Thepresentperfectpassivevoice现在完成时1.表示到现在为止已经完成，强调结果对现在的影响Thetrainhasleft.（火车已经开走了→现在赶不上了）Shehascookeddinner.（她做完饭了→现在可以吃了）pastfuturenow现在完成时时间状语already

已经(肯定句)

yet

已经（否定句或者疑问句）recently/lately最近sincethen

从那时起eversince

自那以来

ever曾经sofar

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在过去的几年里现在完成时2.表示持续到现在的动作或状态，常与for（持续一段时间）或since（从过去某一时间点开始）连用。

Theyhavelivedherefor10years.（至今仍住在这里）▶Hehasworkedatthecompanysince2015.（从2015年工作到现在）pastfuturenow现在完成时3.表示刚刚完成的动作（just/recently）Thetrainhasleft.（火车已经开走了→现在赶不上了）Shehascookeddinner.（她做完饭了→现在可以吃了）4.表示经历（曾做过某事），常与ever（曾经）或never（从未）连用。HaveyoueverbeentoParis?（询问经历）Ihavenevereatensushi.（至今未尝试过）定义：表示动作发生在过去，持续到现在或对现在产生影响，且主语是动作的承受者。现在完成时的被动语态present(now)futurepast主语Anenemyhasbeenslain.助动词，无意义V-ed(过去分词)+have/has+现在完成时的被动语态现在完成时的被动语态的不同形式肯定式主语＋have/hasbeendone...否定式主语＋have/hasnotbeendone...一般疑问式Have/Has＋主语＋beendone...？特殊疑问式特殊疑问词＋have/has＋主语＋beendone...？现在完成时的被动语态的构成have/has＋been＋done现在完成时的被动语态Readthepairsofsentences.Underlineandcomparethedifferentverbforms.Jan’slifehasbeengreatlyimprovedbytheInternet.TheInternethasgreatlyimprovedJan’slife.PeoplehavewrittenmuchaboutthewondersoftheWorldWideWeb.MuchhasbeenwrittenaboutthewondersoftheWorldWideWeb.主动主动被动被动现在完成时的被动语态Changethesentencesintothepresentperfectpassivevoice.Thesoftwarehasbeendownloadedtohelpmyphonebatterylastlonger.2.Someonehaslostanidentitycard.Anidentitycardhasbeenlost.1.Ihavedownloadedthesoftwaretohelpmyphonebatterylastlonger.现在完成时的被动语态Changethesentencesintothepresentperfectpassivevoice.Hasthebuttonbeenpressedyettocopythefile?5.Hasanyonemadeacommentabouttheonlinedatabase?Hasacommentbeenmadeabouttheonlinedatabase?4.Haveyoupressedthebuttonyettocopythefile?3.HaveyouconfirmedtheWi-Fipassword?HastheWi-Fipasswordbeenconfirmed?现在完成时的被动语态核心用法①

现在完成时的被动语态同它的主动语态一样，强调过去的动作对现在造成的影响或结果。常与already,yet,just,never,ever等副词连用。Thenewlibraryhasbeenbuilt.（图书馆已建成，现在可以使用）Thereporthasalreadybeensubmitted.（报告已提交，现在无需再处理）现在进行时的被动语态的基本用法②表示一个被动的动作或状态从过去开始一直持续到现在，常与for+时间段或since+时间点连用（此时动词需为延续性动词），或用于“Howlong...?”句型中。Themachinehasbeenusedforfiveyears.（机器已使用五年，仍在使用中）Thehousehasbeenownedbythefamilysince2000.（房子自2000年起归该家庭所有）现在进行时的被动语态的基本用法③用在时间或条件状语从句中，表示将来已完成的动作，即用现在完成时的被动语态代替将来完成时的被动语态。Whenthereporthasbeensubmitted,wecanstartthenextproject.（等报告被提交后，我们就可以开始下一个项目。）Ifthepackagehasbeendeliveredby3PM,Iwillsignforit.（如果包裹在下午3点前被送达，我会签收。）注意1.不可用于被动语态的动词：静态动词（表示状态、情感或所属关系）：have（有）,belong,love,know,seem等；不及物动词（无宾语）：arrive,happen,die,occur等。❌Mypenhasbeenbelongedtomeforyears.❌Theaccidenthasbeenhappenedrecently.注意2.与现在进行时被动语态的区别时态结构含义例句现在完成时被动have/hasbeendone动作已完成，对现在有影响Thecakehasbeeneaten.（蛋糕已被吃完）现在进行时被动am/is/arebeingdone动作正在进行中Thecakeisbeingeaten.（蛋糕正在被吃）注意3.与一般过去时的被动语态的区别：一般过去时的被动语态所表示的动作或状态与现在的情况没有联系，而现在完成时的被动语态则强调与现在的情况有联系。Themuseumwasopenedtothepubliclastyear.去年这家博物馆向公众开放。(说明动作发生于过去)Themuseumhasbeenopenedtothepublic.这家博物馆已向公众开放。(说明动作发生于过去，但对现在有影响，即现在公园已经开放了)注意4.特殊短语/动词的被动语态：动词+介词/副词（如lookafter,takecareof）：介词/副词不可省略；含双宾语的动词（如give,send）：可将“间接宾语（人）或直接宾语（物）”变为主语。Theoldmanhasbeenlookedafterbyhisson.（不可省略after）Shehasbeengivenaprize.（=Aprizehasbeengiventoher.）注意5.带有复合宾语的动词变为被动语态时，只能将宾语变为主语，原来的宾补改为主语补足语。注意：原来作宾补的省略to的不定式在被动语态中要用带to的不定式。Ihavetoldthemtohelpyou.→Theyhavebeentoldtohelpyou.Themanagerhasnevermadetheemployeesworkdayandnight.

→Theemployeeshaveneverbeenmadetoworkdayandnight.

Summary现在完成时的被动语态含义结构表示动作发生在过去，持续到现在或对现在产生影响，且主语是动作的承受者。have/hasbeendone形式肯定式否定式疑问式have/hasbeendonehave/hasnotbeendone一般疑问：Have/Has+主语+beendone?特殊疑问：特殊疑问词+have/has+主语+beendone?用法强调过去的动作对现在造成的影响或结果表示开始于过去并可能持续下去的被动动作用在时间或条件状语从句中，表示将来已完成的动作Part3Exercise1.Overthepastfouryears,morethan$10million________________(spend)carryingouttheproject.2.Manybuildingsinthiscity__________________(not,build)yet.3.IliketheseEnglishsongsandthey______________(teach)manytimesontheradio.4.Allthepreparationsforthetask__________________(complete),andwe’rereadytostart.5.Nowallthetrees______________(plant)bystudents.havebeentaughthavebeencompletedhavenotbeenbuilthavebeenplantedhavebeenspent请将下列句子转换成相应的被动语