高中英语人教2019版必修2UNIT3THEINTERNETPART3DISCOVERINGUSEFULSTRUCTURE课件(16张)

Unit3The

InternetPart3—Grammar20201.Identifyandsummarizetheformandthefunctionsofthepresentperfectpassivevoice;2.Comparethepresentperfectpassivevoicewiththeactive,andchangetheactiveformintothepassiveform;3.Applythepresentperfectpassivevoiceintouse;LearningAims语法感知感知以下课文原句，完成方框下的小题我方击杀一名敌人。Anenemyhasbeenslained.我方队友被击杀。Anally

hasbeenslained.你被击杀了。Youhavebeenslained.1.以上句子中所使用的时态和语态是

。2.现在完成时的被动语态的构成为：

。现在完成时的被动语态have/hasbeen＋过去分词ThePresentPerfectPassiveVoice现在完成时的被动语态1.被动语态现在完成时形式A.陈述句：主语+have/has(not)+been+doneB.疑问句：

(疑问词)+have/has+主语+been+done?

2.被动语态现在完成时的用法(1)表示某一被动动作发生在过去(现在说话前)，但与现在的情况有联系。常与下列时间状语连用：just,already,yet,before,recently,lately,sofar等。Thedoorhasbeenlocked.

门已经被锁上了。（现在说话时门是锁着的）Compare:

Thedoor

waslocked.门当时是锁着的/被锁上了。（与现在说话时门的状态无关，可能锁上或重新打开了）。(2)表示某一延续性的被动动作或状态从过去某时一直延续到现在说话时，并有可能继续下去。与since,for,allday,in/for/over/duringthepast/lastfewyears等表示的时间状语连用。E.g.

Thebankhasbeenclosed

sinceJuly/forseveralweeks.自从七月以来银行一直关门/已经关门好几个星期了。E.g.

ThechildhasbeentakencareofbyGrandmaWangalltheseyears.

这多些年来这孩子一直又王奶奶照看。(3)用在时间和条件状语从句中,表示将来某时已完成的动作。如：E.g.

We’llstartoutassoonastheworkhasbeenfinished.工作一完成我们将出发。注意：下来情况下用被动语态：1.强调动作的承受者，即动作的承受者是谈话的中心。2.不知道或不必要或为了委婉/礼貌,不便说出动作的发出者。3.当动作的执行者带有较长的定语。1.MuchhasbeenwrittenaboutthewondersoftheWorldWideWeb.2.People’sliveshavebeenchangedbyonlinecommunitiesandsocialnetworks.3.Manypeoplehavebeenhelpedbytheclub.4.Jan’slifehasbeengreatlyimprovedbytheInternet.1.PeoplehavewrittenmuchaboutthewondersoftheWorldWideWeb.2.Onlinecommunitiesandsocialnetworkshavechanged

people’slives.3.Theclubhashelpedmanypeople.4.TheInternethasgreatlyimproved

Jan’slife.Whichgroupisbetter?Why?CompareandFind1.MuchhasbeenwrittenaboutthewondersoftheWorldWideWeb.Observeandtranslatethefollowingsentences,andtrytofindsomethingincommonfromthesesentences.2.People’sliveshavebeenchangedbyonlinecommunitiesandsocialnetworks.3.Manypeoplehavebeenhelpedbytheclub.…已经被书写…已经被改变have/hasbeendone…已经被做表示“某人/某事/某物已经被…”…已经被帮助hasbeenwrittenhavebeenchangedhavebeenhelpedTips:常与现在完成时连用的时间状语(是否都用完成时)already已经 yet已经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for+时间段副词的位置(1)Suchamanhashardlybeenbelieved.(2)Themachinehasalreadybeenrepaired.注意：2.并不是所有动词都有被动语态不及物动词和系动词都没有被动语态形式。但它们中的某些不及物动词虽为主动形式，却可表示被动意义。(1)Thesteelfeelscold.(2)Thebooksmellsold.(3)Goodmedicinetastesbitter.所有的及物动词都有被动语态？often,usually,always,never,hardly,seldom等副词置于have/has和been中间。错，只有及物动词才有被动语态形式，但不是所有的及物动词都是如此，如某些表示状态或表示关系的动词或短语只有主动语态，而无被动语态。常见的这类动词有：cost(花费),

fit(适合),have(有),hold(容纳),lack(缺乏),own(占有),suit(适合),fail(失败),belongto(属于),agreewith(同意)等。e.g.(1)TaiwanbelongstoChina.(2)Thecoatcostme¥300.拓展：所有的及物动词都有被动语态？Thepatientshavebeentakengoodcare

of.3.短语动词不可分割也不可省略其中的介词或副

词。VerbformHowdowefromthepresentperfectpassivevoice?Filltheblank.Activehave/has+donePassive____________________have/hasbeen+done(P30T2)Changethesentencesintothepresentpassivevoice.Example:They'vebulitakindofnewPCwithmorefunctions.→

AkindofnewPChasbeenbuiltwithmorefunctions.1.Ihavedownloadedthesoftwaretohelpmyphonebattery

lastlonger.2.Someonehaslostanidentitycard.3.HaveyouconfirmedtheWi-Fipassword?4.Haveyoupressedthebuttonyettocopythefile?5.Hasanyonemadeacommentabouttheonlinedatabase?1.Ihavedownloadedthesoftwaretohelpmyphonebatterylastlonger.2.Someonehaslostanidentitycard.3.HaveyouconfirmedtheWi-Fipassword?4.Haveyoupressedthebuttonyettocopythefile?5.Hasanyonemadeacommentabouttheonlinedatabase?Thesoftwarehasbeendownloadedtohelpmyphonebatterylastlonger.Anidentitycardhasbeenlost.HastheWi-Fipasswordbeenconfirmed?Hasthebuttonbeenpressedyettocopythefile?Hasa/anycommentbeenmadeabouttheonlinedatabase?SUMMMARY现在完成时的被动语态含义结构表示过去发生的被动动作现在已经完

成或仍将持续,强调对现在的影响have/hasbeendone形式肯定式否定式疑问式have/hasbeendonehave/hasnotbeendoneHave/Has+主语+beendone?特殊疑问词+have/has+主语+beendone?用法表示已经完成的被动动作表示开始于过去并可能持续下去的被动动作在时间状从,条件状从中,表示还未发生的被动动作注意事项区分have/hasbeendone/bebeingdone/bedone不及物动词或词组无被动Prace

Greatchanges1.__________(take)placeinmyhometowninthepastfewdecades.

Thepublicfacilities(设施)2._________________(improve)sofar.Many

3.______(road)havebeenwiden.Besides,

Moreattentionhasbeengiventothe4._____________(environment)protection,somanytreesandflowers5._______________(plant)now.Thewaterintheriversaswellastheair6.___________(become)c