高中英语Unit3ComputersSection2LearningaboutLanguage课件新人教版必修2.ppt

Unit3,Computers,SectionLearningaboutLanguage,语法精讲,现在完成时的被动语态,自主预习,用所给词的适当的时态、语态填空。1OvertimeI_(change)quitealot.2FirstasaPCandthenasalaptop，I_(use)inofficesandhomessincethe1970s.3Sincethe1970smanynewapplications_(find)forme.4I_also_(put)intorobotsand_(use)tomakemobilephonesaswellashelpwithmedicaloperations.5I_even_(put)intospacerocketsand_(send)toexploretheMoonandMars.,havebeenchanged,havebeenused,havebeenfound,1have,beenput,used,have,beenput,sent,合作探究,一、现在完成时的被动语态的基本用法1基本概念。现在完成时的被动语态强调一个发生在过去的被动性的动作，动作已完成并强调对现在造成的影响或结果，主语和谓语之间为被动关系。Thenewschoolhasbeensetup.新学校已经建成了。Ihavebeenemployedatthejobsince2000.自从2000年，我就做这份工作。,2基本构成。现在完成时的被动语态的结构为has/havebeendone。主语为单数时用hasbeendone，而主语为复数时则用havebeendone。Theexperimenthasbeendonesuccessfully.这个实验做得很成功。Hisnovelshavebeentranslatedintoseverallanguages.他的小说已被译成了几种语言。,3现在完成时的被动语态的各种句式。,Hehasbeenadmittedtotheclub.他已被接纳为俱乐部成员了。Tomsnovelhasnotbeenpublished.汤姆的小说还没有被出版。Hashisbikebeenrepaired?他的自行车修好了吗？Whohasbeeninvited?谁受到了邀请？,(1)sincethen，since从句，sofar，bynow，uptonow，recently，lately，already，yet，inthelast/past时间段等常用于现在完成时的句子中。(2)非延续性动词，如borrow，finish，begin，start，buy，marry，open，join等构成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，则要变换动词或时态。Sincetheproductswereputinmarket，theyhavebeenwellreceived.自从这些产品被投入市场，它们已得到好评。这本书已借了两周了。Thebookhasbeenborrowedfortwoweeks.FThebookhasbeenkeptfortwoweekssinceitwasborrowed.T,将下列句子变为被动语态。Theyhavecarriedouttheplansincelastmonth.Theplan_sincelastmonth.Thehosthasinvitedallhisgueststotheparty.Allhisguests_totheparty.根据要求改写句子。Thoseoldhomelessmenhavebeenwelllookedafter.Thoseoldhomelessmen_.(否定句)_thoseoldhomelessmen_？(一般疑问句),hasbeencarriedout,havebeeninvited,haventbeenwelllookedafter,Have,beenwelllookedafter,二、使用现在完成时的被动语态的几点注意事项1只带有一个宾语的动词变为被动语态时，将主动语态的宾语变为被动语态的主语。Hisbosshasalreadypunishedhim.Hehasalreadybeenpunished(byhisboss),2带有双宾语的动词，如give，send，bring，take，teach，show，tell，make，sing，write，read，sell，buy，pay，lend，pass，promise等，变为被动语态时，一般将间接宾语变为被动语态的主语，若将直接宾语变为被动语态的主语时，间接宾语前面要用相应的介词。Thecompanyhasgivenhimachancetoworkabroadrecently.Hehasbeengivenachancetoworkabroadrecently(bythecompany)Achancetoworkabroadhasbeengiventohimrecently(bythecompany),3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，原来的宾语补足语变为主语补足语。Withthesedecorations，theworkershavemadetheroommorebeautiful.Withthesedecorations，theroomhasbeenmademorebeautiful(bytheworkers)M名师点津带有复合宾语的动词变为被动语态时，若宾语补足语为省略to的不定式充当时，在被动语态中需将省掉的to加上。Thebosshasmadehismenworkawholedaytomakeaplan.Hismenhavebeenmadetoworkawholedaytomakeaplan(bytheboss),4短语动词是一个不可分割的整体，在被动语态中要保持完整性，其中的介词或副词不可省略。Theorphanhasbeenwelllookedafter.这个孤儿一直受到很好的照顾。,单句改错。Shehasbeenmadestudythematerialforalm