现在完成时的被动语态

,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,Grammar,Passive Voice,经典题型：,1.They,clean,the classroom,every day,.,2.They,cleaned,the classroom yesterday.,3.They,will,clean,the classroom,tomorrow.,4.They,must clean,the classroom after class.,The classroom,is,cleaned,by,them,every,day.,The classroom,was cleaned,by,them,yesterday.,The classroom,will be,cleaned,by,them,tomorrow,.,The classroom,must be,cleaned,by,them,after class.,Summary:,被动语态的构成：,be+done,（过去分词）,、一般过去时：,was done,were,1.,一般现在时：,am,is done,are,3.,一般将来时：,will be done,shall,4.,含有情态动词,:can,may,must be done,should,have to,现在完成时的被动,:has/have been+done,1.,表示过去开始的被动动作一直持续到现在，常与之连用的时间状语有：,for+,一段时间，,since+,时间状语（从句），,these days,so far,up to now,in the last/past few years,等。,e.g Up to now,half of the boos have been,read by the students.,2.,表示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,。,e.g.I have already been introduced to Mr.Smith.,一般过去时,则是表示过去某时发生的动作或情况,与现在没有关系。,一般过去时常与表示确定的过去时间的状语连用,如,:,yesterday,two weeks ago,in 1978,等,e.g.The machine,has been repaired,机器已经修好了。,(,说明动作发生在过去，对现在有影响，修好了。,),The machine,was repaired,yesterday,机器昨天修了。,(,只说明动作发生在昨天。,),1.,现在完成时被动语态肯定句,主语,+has/have been+,动词的过去分词,Her motorbike,has been stolen.,她的摩托车被盗了。,All the offices,have been linked,by computer.,所有的售票处由计算机联网工作。,句型,2.They,havent been told,about it yet.,否定式,：,_+,及物动词的过去分词。,3.,Have,his books,been sold out,?,Yes.So you cant buy one now.,一般疑问句形式,：,_+,及物动词的过去分词。,have/has+not+been,Have/Has+,主语,+been,How many experiments,have been done,by the students this month?,特殊疑问句形式：,疑问词,+have/has+been+,及物动词的过去分词。,并不是所有动词都有被动语态,happen,take place,break out,belong to,cost,last,等不及物动词或词组无被动语态,。,误,Great changes have been taken,place in China since 1978.,正,Great changes have,taken place,in,China since 1978.,一、单项选择,1.Both my brothers work at the power station that _ in my hometown.,A.has set up B.has been set up,C.was set up D.is set up,2.-_ the sports meet will be put off.,A.Ive been told B.Ive told,C.Im told D.I told,B,A,3.All the preparation for the task _,and were ready to start.,A.completed,B.complete,C.had been completed,D.have been done,D,4.-How long _ at this job?,-Since 1990.,A.were you employed,B.have you been employed,C.had you been employed,D.will you be employed,B,5.When and where to go for the on-salary holiday _ yet.,A.are not decided,B.have not been decided,C.is not being decided,D.has not been decided,D,6.-Did you move into the new house?,-No.The rooms _ yet.,A.were being painted,B.are painting,C.have not painted,D.have not been painted,D,二、改错,1.A personal computer has bought by us.,A personal computer has,been,bought,by us.,2.Many problems has been found with our new computer.,Many problems,have,been found with,our new computer.,5.The computer was used every day since we bought it.,The computer,has,been,used every day since we bought it.,6.A lot of e-mails had written on the computer in the past 5 years.,A lot of e-mails,have,been,written on,the computer in the past 5 years.,三、用动词正确形式填空。,1.First as a PC and then as a laptop,I,_(use)in offices and,homes,since the 1970s,.,2.,Over,time,my memory _,(develop)so much that,like an elephant,I never forget anything I,_(told).,3.,Since,the,1970s,many new applications,_(find)for me.,have,been,used,has,developed,have,been,told,have,been,found,4.I have also _(put)into,robots and used to make mobile phones,as well as _(help)with medical,operations.,5.I _(put)into,space rockets and sent to explore the,Moon and Mars.,been,put,help,have,even been put,