点击现在完成时被动语态

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  现在完成时被动语态的构成及用法是现在完成时和被动语态的重要用法,也是高考的重要考点,学习时应注意下列几点:
  
  一、掌握现在完成时被动语态的构成
  
  现在完成时被动语态的结构为has/have been done,使用has been done时,主语为单数;使用have been done时,主语为复数。
  例1:This book has been translated into many languages.
   这本书已被译成多国文字。
  例2:My homework has been done. 我的家庭作业已经完成了。
  
  二、理解现在完成时被动语态的概念
  
  现在完成时被动语态是强调一个发生在过去的被动性动作对现在造成的影响。
  例1:Our classroom has been cleaned. You needn’t clean it now.
   我们的教室已被打扫,你没必要再打扫了。
  析:该句强调教室已被打扫,对现在造成的影响是教室是干净的,强调这个影响,你就没必要再打扫了。
  例2:These flowers have been watered; you can go home.
   这些花已被浇水,你可以回家了。
  析:这些花已被浇水,对现在造成的影响是你没必要再浇水了,强调这个影响,你可以回家了。
  现在完成时被动语态还可强调到目前为止已存在若干时间的被动性动作或状态。
  例1:This book has been published for two weeks.
   这本书已被出版二周。
  例2:This work has been done for two hours.
  这项工作已被做完两小时了。
  
  三、掌握现在完成时被动语态的用法
  
  1.在不知道动作执行者是谁时
  His bike has been stolen. 他的自行车被人偷了。
  (是被谁偷的,不清楚。)
  2.当动作执行者是泛指或不言自明时
  Not a book in the library has been taken away.
  图书馆里的书没有一本被人拿走。(没人拿书,泛指)
  3.虽然可以说出动作执行者但动作承受者是谈话中心或特别需要强调
  My watch has been repaired. 我的表修好了。
  (表修好了是谈话的主旨,是谁修好的无关紧要,不必提及。)
  4.出于委婉、礼貌而避免提及自己或对方时
  Enough has been said here on this question.
  关于这个问题,已经谈得不少了。(意思是说:大家不要再说了。)
  5.在文章标题、广告、新闻等中(常用省略助动词be的被动语态)
  Road Blocked. 道路已被堵塞。(新闻报道,省略了助动词has been。)
  6.当动作的执行者不是人时
  The house has been washed away by the storm.
  房子已被暴风雨冲走了。
  7.在商务书信中书信起草人是以公司名义时
  Your letter has been received. 来信收到。
  (这是公文往来的用语,朋友之间若这么写就显得太冷漠了。)
  
  四、掌握现在完成时被动语态的各种句型变换
  
  从现在完成时被动语态结构has/have been done可以看出has/have为助动词,因此现在完成时被动语态的各种句型变换均应借助于has/have来完成。构成否定句时直接在has/have后面加not,构成一般疑问句时将has/have提前。
  例1:Has this bridge been finished?这座桥竣工了吗?(一般疑问句)
  例2:His homework hasn’t been finished.
   他的家庭作业还没有被完成。(否定句)
  例3:The blackboard has been cleaned, hasn’t it?
   黑板已被擦了,是吗?(反意疑问句)
  例4:Where has this film been put on many times?
   这场电影在哪儿被上演过多场?(特殊疑问句)
  例5:Has your lost key been found in this room or that one?
   你丢失的钥匙是在这个房间还是那个房间被找到的?(选择疑问句)
  
  五、用现在完成时被动语态容易进入的误区
  
  1. [误]:To my great surprise, she always been admired.
   [正]:To my great surprise, she has always been admired.
   [析]:现在完成时被动语态的构成为has/have been+过去分词。
  2. [误]:No permission has given for anybody to enter the building.
   [正]:No permission has been given for anybody to enter the building.
   [析]:谓语动词同主语存在动宾关系,应该用被动语态。
  3. [误]:The price has been gone down but I doubt whether it will remain so.
   [正]:The price has gone down but I doubt whether it will remain
  so.
   [析]:不及物动词(词组)不可用被动语态。常用的不及物动词(词 组)有:happen, last, take place, rise, break out, belong
  to, give out, run out等。
  4. [误]:It is true that the light has been turned off for two hours.
   [正]:It is true that the light has been out for two hours.
   [析]:短暂性动词可用于完成时,但不可和表示一段时间的状语连
   用。
  5. [误]:Most of the streets in the city have been not widened.
   [正]:Most of the streets in the city have not been widened.
   [析]:现在完成时被动语态的否定形式为has/have not been+过去分词。
  
  跟踪练习:
   1. Great changes ____ in our city, and some schools ____ set up.
   A. have taken place, have been
   B. have taken place, have
   C. have been taken place, have been
   D. were taken place, were
   2. The police found that the house ____ and a lot of things ____.
   A. has broken into, has been stolen
   B. had broken into, had been stolen
   C. has been broken into, stolen
   D. had been broken into, stolen
   3. ——____ the sports meet might be put off.
   ——Yes, it all depends on the weather.
   A. I’ve been told B. I’ve told
   C. I’m told D. I told
   4. ——We want to sit at the table near the window.
   ——I’m sorry, but it ____ already.
   A. has taken B. took C. was taken D. has been taken
   5. ——How are things getting on?
   ——All that can be done ____.
   A. has been done B. had been done
   C. have been done D. has done
  6.It is said that the library ____ 80 years ago.
  A. has been set up B. was built up
  C. was set up D. had been set up
  7.The washing machine ____ by the engineer right now.
  A. has been repaired B. is being repaired
  C. is repaired D. is going to be repaired
  8.The bag, in which she put all her money, ____.
  A. has been not found B. has not been found
  C. having not been found D. had not been found
  9.Why don’t you go to the bookstore to buy some books?Many new books ____ here.
  A. have just brought B. have just been brought
  C. were just brought D. are just to be brought
  10.Come and sit down by the fire. Your hand ____ cold.
  A. has been felt B. feels C. is felt D. has felt
  Key(2)
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