Unit3TheInternetDiscoveringUsefulStructures课件高中英语人教版2

Unit3TheInternetDiscoveringUsefulStructuresWatchthevideoandcompletethesentences.Warm

up1.You________________anenemy.2.Anenemy________________________.3.Yourteam____________________aturret.4.Yourturret___________________________.havehashashasDoyoufindanydifference?slainbeenslaindestroyedbeendestroyedWarm

upReadthepairsofsentences.Underlineandcomparethedifferentverbforms.have/hasbeen+v-edhave/hasv-ed现在完成时的被动语态Warm

up现在完成时的构成present(now)futurepast主语Anenemyhasbeenslain.助动词，无意义主语若是第三人称单数助动词用hasV-ed(过去分词)+have/has+区别have和has的用法Youhaveplantedallthetrees.Ihaveplantedallthetrees.He/shehasplantedallthetrees.Theyhaveplantedallthetrees.主语若是第三人称单数助动词用has现在完成时的用法(1)表示到现在为止已经完成或刚刚完成的动作。Nowwehaveplantedallthetrees.(2)表示过去发生的动作。强调结果或对现在的影响。Ihavealreadylostthekey.常与already(已经)，yet(到现在还没有)，just(刚刚)，ever(曾经)等词连用.现在完成时的用法(3)表示从过去开始并持续到现在的动作或状态，常与包括现在在内的一段时间的状语连用。ShehaslearnedEnglishfor5years.她学英语有五年了。HehaslivedinBeijingsince5yearsago.他五年前就住在北京了。for+时间段(一段时间)since+一个时间点一段时间十ago从句现在完成时的被动语态肯定式:have/has+beendoneAlotoffactorieshavebeensetupsincelastyear.自从去年以来,已经建立了许多工厂。否定式:have/hasnot+beendoneTom’snovelhasnotbeenpublished.汤姆的小说还没有被出版。现在完成时的被动语态一般疑问式:Have/Has+主语+beendone?Ican'tseeanycoffeeinthiscupboard.Has

itallbeenfinished?我看不见这碗柜里有咖啡。都喝完了吗?特殊疑问式:疑问词+have/has(+主语)+beendone?Who

hasbeeninvited?谁受到了邀请?PracticeChangethesentencesintothepresentperfectpassivevoice.1.Ihavedownloadedthesoftwaretohelpmyphonebatterylastlonger.Thesoftwarehasbeendownloadedtohelpmyphonebatterylastlonger.2.Someonehaslostanidentitycard.Anidentitycardhasbeenlost.3.Someonehaslostanidentitycard.HastheWi-Fipasswordbeenconfirmed?PracticeChangethesentencesintothepresentperfectpassivevoice.4.HaveyouconfirmedtheWi-Fipassword?Hasthebuttonbeenpressedyettocopythefile?5.Hasanyonemadeacommentabouttheonlinedatabase?Hasa/anycommentbeenmadeabouttheonlinedatabase?现在完成时的被动语态的用法1.表示一个被动的动作在说话之前已完成,强调过去的动作对现在造成的影响或结果,通常与already,yet,just,never,recently等副词连用。Igotcaughtintherainandmysuithasbeenruined.我被雨淋了,衣服全毁了。Hisbrotherhasbeenfiredbythecompanyrecently.他弟弟最近被公司解雇了。现在完成时的被动语态的用法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或since引出的时间状语连用,或用于howlong引出的句子中。Agreatmanymachineshavealreadybeenproducedbythefactorysincethetechnologicalrevolution.自从技术革命以来，这家工厂已经生产了许多机器。IhavebeenlivinginNewYorksince2010.自2010年以来，我一直生活在纽约。现在完成时的被动语态的用法3.用在时间或条件状语从句中，表示将来已完成的被动动作，即用现在完成时的被动语态代替将来完成时的被动语态。Shewillleaveforthecinemaassoonastheapplicationformhasbeencompleted.申请表一填好，她就去看电影。常与现在完成时连用的时间状语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在最近几年里注意事项1.与一般过去时的被动语态的区别动作发生的时间对现在有无影响一般过去时的被动语态过去无现在完成时的被动语态过去有注意事项2.borrow,begin,start,buy,marry,open,join等非延续性动词的现在完成时的被动语态不能与表示一段时间的状语连用。若要表达相应的意思，需要改变动词或时态。这本书借了一周了。Thebookhasbeenborrowedforaweek.Thebookhasbeenkeptforaweek.这个工程已经开始多久了?Howlonghasthisprojectbeenstarted?Howlongagowasthisprojectstarted?注意事项3.带有复合宾语(宾语+宾语补足语)的动词变为被动语态时，只能将宾语变为主语，原来的宾语补足语保持不动。主动语态中不带to的不定式作宾补，在被动语态中要加上to。Theworkershavebeenmadetoworkawholedaywithoutstop.工人们被迫不停地干了一整天。注意事项4.短语动词变为被动语态时，要注意保持短语动词的完整性，不可漏掉动词后面原有的介词或副词。此类短语动词有:①动词+介词referto,lookafter,callon,relyon,lookfor,lookat,listento,dreamof,meetwith,laughat,resultin,waitfor,dealwith,operateonThesecaseshavebeenreferredtointheexpert'sreport.专家的报告中提到了这些案例。注意事项②动词+名词+介词payattentionto,makeuseof,takepartin,keepaneyeon,makefunof,catchsightof,takeanoteof,takecareofThepoorboyhasbeenmadefunofinthepublicformanytimes.这个可怜的男孩在公共场合被取笑了很多次。注意事项③动词+副词turnon,turnoff,carryon,carryout,thinkover,makeup,setup,putdown,handin,pointout,callupSeveralspecializedhospitalshavebeensetuptohelpcurethepatientsoftheterribledisease.已经建立了几家专科医院来帮助治疗这种可怕疾病的病人。LanguagePointsfunctionn.功能;作用;机能performafunction发挥功能;履行职责vi.起作用;正常工作;运转functionas起······作用，具有……功能functionwell/normally运转良好/正常练习：Comparedtothetraditionalones,theyhavethreenewunique_____________(function).functionLanguagePointsconfirmv.确认;使确信;批准confirmthat/wh-...证实……Ithasbeenconfirmedthat...已经证实……confirmsb.insth.使某人确信某事confirmsb.assth.任命某人担任某职位练习：ThePresidentconfirmedhim_________SecretaryofState.asLanguagePointspressvt.按;压;敦促press...against/on...把……按在……上pressabutton/switch/key按下按钮/开关;按键pressuren.压力;劝说,强迫underpressure处于压力下练习：Michaeltookafewstepsbackwardsandpressedhisback_____________thewall.against/onPractice1.Theirnewhouse_______________________(decorate)fortwomonthsandtheywillsettleinitinthenearfuture.

2.Hundredsofexcellentathletes_________________(select)frommillionsofpeoplealloverthecountryinthepasttwomonths.4.Greatchanges____________(take)placeinmyhometownandalotoffactories_____________(set)upinthepasttenyears.3.Anewlibraryandagyminourschool_______________(set)upsofarandtheywillbeputintouseverysoon.用所给词的适当形式填空hasbeendecoratedhasbeenselectedhavebeensethavetakenhavebeensetPractice5.Everypossiblemeans_______________(try)tosavethewoundedsoldieruptonow.

6.Howmanysuggestions________________(give)toyousofar?8.Inthelastfewyearsthousandsoffilms___________________(produce)allovertheworld.7.Allthepreparationsforthetask_______________(make),andwe'rereadytostart.9.Despitethepreviousroundsoftalks,noagreement_____________________(reach)sofarbythetwosides.用所给词的适当形式填空hasbeentriedhavebeengivenhavebeenmadehavebeenproducedhasbeenreachedPractice将下列句子改为被动语态1.Theyhavejustconnectedtheprintertothecomputer.2.Wehaveplantedmanytreesonthehillinthelastfiveyears.3.Tomhasn'tsoldoutallthemagazines.4.Haveyoufoundwaystomakewastewaterclean?Theprinterhasjustbeenconnectedtothecomputer(bythem)