英语新人教必修二Unit3Period-4语法现在完成时的被动课件

Unit3TheInternet

DiscoveringUsefulStructures

Teachingobjectives:Bytheendofthisperiod,youwillbeableto…analyzetheformsandfeaturesofthepresentperfectpassivevoice.findoutthedifferencesinmeaningandfunctionbetweentheactiveandpassiveforms.masterthefunctionsofthepresentperfectpassivevoiceinthecontextanduseitinrealsituations.WhataspectsinyourlifehavebeenchangedsincetheappearanceoftheInternet?Leadin

BeforeAfterTransport

Reading

Payment

Entertainment

Trytotellthechangesaccordingtothetableusingthepresentperfectpassivevoice.

foot;bike;bus;trainplane;high-speedrailpaperbooksE-booksincash;bycreditE-paymentwatchmoviesinthetheater…Streammoviesandmusic;chatonline…一、现在进行时被动语态（一）构成1.肯定形式2.否定形式（二）用法1.表示说话时正在进行的被动动作；2.表示现阶段正在进行的被动动作；3.表示一种经常性的被动行为，带有感情色彩。is/am/arebeingdoneis/am/arenotbeingdone1.ThePresentPerfecttense(现在完成时)present(now)futurepast

PresentPerfectTense

现在完成时(1)主语+have/has+V-过去分词(done)助动词,无意义

一：现在完成时的结构Winter

has

already

come(came,come)，willitstillbefarinspring?注：主语若是第三人称单数助动词用hasActive__________________Passive

_________________Theformofthepresentperfectpassivevoice

Verbformhave/has+v-edhave/hasbeen+v-edYou_have___plantedallthetrees.I_have___plantedallthetrees.He/she_has___plantedallthetrees.They__have__plantedallthetrees.

练习：区别have和has的用法

主语若是第三人称单数助动词用has1.Jan’slifehasbeengreatlyimprovedbytheInternet.TheInternethasgreatlyimprovedJan’slife.2.MuchhasbeenwrittenaboutthewondersoftheWorldWideWeb.PeoplehavewrittenmuchaboutthewondersoftheWorldWideWeb.ObserveandanalyzeUnderlineandcomparethedifferentverbforms.一、观察例句，归纳现在完成时被动语态的构成。（1）Tom'snovelhasnotbeenpublished.（2）Theexperimenthasbeendonesuccessfully.

（3）Howlonghasthisfilmbeenshown?

（4）Hashisbikebeenrepaired?现在完成时的被动语态肯定形式为:_____________________。如句(2)。2．否定形式为:____________________________。如句(1)。3．一般疑问句式为：________________________。如句(4)。4．特殊疑问句式为：________________________。如句(3)主语+have/hasbeendone主语+have/hasnotbeendoneHave/Has＋主语＋beendone疑问词＋have/has+主语＋beendone现在完成时被动语态PracticeChangethesentencesintothepresentperfectpassivevoice.ExampleTheyhavebuiltakindofnewPCwithmorefunctions.→AkindofnewPChasbeenbuiltwithmorefunctions.1.Ihavedownloadedthesoftwaretohelpmyphonebatterylastlonger.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?Whatarethedifferencesinmeaningandfunctionbetweentheactiveandpassiveforms?Theobjectinanactivesentencebecomesthesubjectinapassivesentence.Bothsentencetypesconveyasimilarmeaning,buttheyareslightlydifferent.Activesentencesareusedoften,astheyaremoredirect.Passivesentencesareoftenusedwhenthedoerofanactionisunknown,notimportant,orpreferrednotnamed.Weuseitwhensomethinghasbeendonebysomeoneatsometimeuptonow.Wearenotinterestedintheactor(行动者).Subjectanditsverbshouldbeinaagreement.thepresentperfectpassivevoiceCompletethenoticewiththecorrectformsoftheverbsinbrackets.(WorkbookP75Activity4)NoticetoparentsDearParents,Wehopeyouwillwelcomethisnews.Almost100computers___________(give)tousbyalocalcomputercompanysincetheendoflastyear.Adecision____________(make)tobeginacomputerteachingexperimentatourschool.Ourplan________________(support)withtechnicalequipmentandadvicewhich_______________(provide)bytheCityInformationTechnologyCenter.Everyteacher_________________(provide)withalaptopsincethebeginningofthisterm.Moreimportantly,mostofourcourses________________(teach)usingcomputers.We________________(help)inourteachingbyalotofinformationfromtheInternet.Also,anewcomputerroom_______________(setup)inourschool.Wehopeyouwillbehappywiththisexcitingnewdevelopmentinourschool.No.8SeniorHighSchoolhasbeenmadehasbeengivenhasbeensupportedhasbeenprovidedhasbeenprovidedhavebeentaughthavebeenhelpedhasbeensetup1.Theproblemhasbeendiscussedfor2days.2.Manynewbuildingshavebeenbuiltinthepastfewyears.3.Twonovelshavebeenwrittenbyhimsofar.

4.ThecomputerhasbeenusedeverydaysinceIboughtit.5.Thedirtyclotheshavealreadybeencleaned.现在完成时被动语态用法

（一）找出表示时间状语的词语并总结用法。表示一个被动的动作或状态从过去开始一直持续到现在，常连用的时间状语有：for+段时间，since+时间状语(从句)，thesedays,sofar,uptonow,inthelast/pastfewyears等,总结如下.

常与现在完成时连用的时间状语：

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在过去的几年里即学即练：Thisclass_________________(teach)byMr.Brownfortwoyears.HisChinese_________________(improve)alotsincehecametoChina.Rowling’snovels___________________(translate)intomanyforeignlanguagessofar.havebeentaught

hasbeenimprovedhavebeentranslated（二）表某被动动作对现在造成的影响或结果，常与already,yet,just,ever,never,recently等连用。即学即练：Thebike____________________(notrepair)yet.I_____

already________________(introduce)toMr.Smith.注意：有些动词没有被动语态,如不及物动词happen,takeplace,breakout等。Greatchanges__________(take)placeinmyhometowninthepasttenyears.hasnotbeenrepairedhavebeenintroduced

havetaken现在完成时被动语态的解题步骤1.找时：找与现在完成相对应的时间状语；2.圈主：主语与动词构成被动关系；3.定谓：确定谓动形式：have/has(not)beendone。一.单句语法填空1．Theirnewhouse_______________(decorate)fortwomonthsandtheywillsettleinitinthenearfuture.2．Theirnewcars_________________(advertise)ontheInternetforalongtime.3．Alltheathletes_______________(select)frommillionsofpeoplealloverthecountryinthepasttwomonths.4．Greatchanges___________(take)placeinmyhometowninthepasttenyears.5.She_________(return)thisbooktothelibraryalready.hasbeendecoratedhavebeenadvertisedhavebeenselectedhavetakenhasreturned二、单选题(

)1.Despitethepreviousroundsoftalks，noagreement________sofarbythetwosides.A．hasbeenreached B．wasreachedC．willreach D．willhavereached(

)2.ItisthemostinstructivelecturethatI________sinceIcametothisschool.A．attended

B．havebeenattendedC．amattending

D．haveattended(

)3.Inthelastfewyearsthousandsoffilms________allovertheword.A．haveproduced

B．havebeenproducedC．areproducing

D．arebeingproducedADB(

)4.Look!Anewlibrary________inthecenter.A．isbeingbuilt

B．isbuiltC．isbuilding

D．building(

)5.Wewon'tstarttheworkuntilallthepreparations________.A．arebeingmade

B．willbemadeC