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现在完成时被动语态表示发生在过去的动作，它强调动作已经完成以及动作对现在造成的影响，并且主语与谓语动词之间为被动关系。现在完成时的结构为have/has done, 而被动语态的结构为be+v-ed, 故现在完成时的被动语态则可以两者相结合，即用have/has been+v-ed结构构成。下面我们可以针对现在完成时的肯定、否定、疑问的形式来造几个句子。如:
Our classroom has been cleaned, so you needn’t clean it now.
我们的教室已经被打扫过，你现在没必要再打扫了。
The books have not been borrowed by the teacher.
那些书还没有被老师借走。
—Has his bike been repaired?
—No, it hasn’t.
他的自行车修好了吗？
不，还没有被修好。
How long have the machine been repaired？
这些机器已经修好多长时间了？
Who has been invited?
谁受到了邀请？
现在完成时还要注意以下问题：
1. 现在完成时的被动语态同主动语态一样强调过去动作的延续或对现在造成的影响
That important problem has been discussed for nearly two weeks.
那个重要的问题已经讨论近两周了。
How many new words have been learned by the students?
这些学生学会了多少新单词？
2. 被动语态没有完成进行时，现在完成进行时的主动语态改为被动语态用现在完成时
如：He has been writing the report for two days.
那份报告他已经写了两天了。
变为被动语态应为
The report has been written by him for two days.
3. 主动语态变为被动语态时还要注意主谓一致问题
如：We have used this computer for three years.
变为被动语态应为
The computer has been used by us for three years.
后句中的主语为第三人称单数，所以谓语要用相应的has。
4. 副词的位置
often, usually, always, never, hardly, seldom等副词置于have/has和been中间。
如：[误] Such a man has been hardly believed.
[正] Such a man has hardly been believed.
5. 并不是所有动词都有被动语态，像happen, take place, break out, belong to, cost, last等不及物动词或词组就没有被动语态。
如：[误] Great changes have been taken place in China since 1978.
[正] Great changes have taken place in China since 1978.
另外，open, break, drop等不强调动作发出者的动词的现在完成时常用主动语态。
如：[误] The door has been opened of itself.
[正]The door has opened of itself.
6. 动词短语不可分割或省略其中的介词或副词。
如：The SARS patients have been taken good care of.
The problem has been paid enough attention to.
[【练习】]
1. With the development of medical science, more and more treatment methods (被发现了) in the past years.(discover)
2. Every possible means (已采用) to prevent the air pollution, but the sky is still not clear. (use)
3. So far six Chinese Americans
(已被授予) the Nobel Prize for their outstanding contributions to science. (award)
4. Three fifths of the workers in our factory (已经受过训练) in that technical and engineering school. (train)
5. Seldom tractor (使用拖拉机) since 1998. (use)
6. The works of Beethoven (被演出). (perform)
7. I wonder whether the doctor is one of those who (已被派往国外) to help the patients. (send)
8. To help children solve psychological problem, more hotlines (建立起来了) in recent years. (set)
9. Many mysteries about the universe
(没有破解) so far. (solve)
10. Up to now, all that can be eaten
(已经吃光了) by them. (eat)
[【参考答案】
1. have been sent discovered
2. has been used
3. have been awarded
4. have been trained
5. have tractor been used
6. have been performed
7. have been sent abroad
8. have been set up
9. haven’t been solved
10. has been eaten up
Our classroom has been cleaned, so you needn’t clean it now.
我们的教室已经被打扫过，你现在没必要再打扫了。
The books have not been borrowed by the teacher.
那些书还没有被老师借走。
—Has his bike been repaired?
—No, it hasn’t.
他的自行车修好了吗？
不，还没有被修好。
How long have the machine been repaired？
这些机器已经修好多长时间了？
Who has been invited?
谁受到了邀请？
现在完成时还要注意以下问题：
1. 现在完成时的被动语态同主动语态一样强调过去动作的延续或对现在造成的影响
That important problem has been discussed for nearly two weeks.
那个重要的问题已经讨论近两周了。
How many new words have been learned by the students?
这些学生学会了多少新单词？
2. 被动语态没有完成进行时，现在完成进行时的主动语态改为被动语态用现在完成时
如：He has been writing the report for two days.
那份报告他已经写了两天了。
变为被动语态应为
The report has been written by him for two days.
3. 主动语态变为被动语态时还要注意主谓一致问题
如：We have used this computer for three years.
变为被动语态应为
The computer has been used by us for three years.
后句中的主语为第三人称单数，所以谓语要用相应的has。
4. 副词的位置
often, usually, always, never, hardly, seldom等副词置于have/has和been中间。
如：[误] Such a man has been hardly believed.
[正] Such a man has hardly been believed.
5. 并不是所有动词都有被动语态，像happen, take place, break out, belong to, cost, last等不及物动词或词组就没有被动语态。
如：[误] Great changes have been taken place in China since 1978.
[正] Great changes have taken place in China since 1978.
另外，open, break, drop等不强调动作发出者的动词的现在完成时常用主动语态。
如：[误] The door has been opened of itself.
[正]The door has opened of itself.
6. 动词短语不可分割或省略其中的介词或副词。
如：The SARS patients have been taken good care of.
The problem has been paid enough attention to.
1. With the development of medical science, more and more treatment methods (被发现了) in the past years.(discover)
2. Every possible means (已采用) to prevent the air pollution, but the sky is still not clear. (use)
3. So far six Chinese Americans
(已被授予) the Nobel Prize for their outstanding contributions to science. (award)
4. Three fifths of the workers in our factory (已经受过训练) in that technical and engineering school. (train)
5. Seldom tractor (使用拖拉机) since 1998. (use)
6. The works of Beethoven (被演出). (perform)
7. I wonder whether the doctor is one of those who (已被派往国外) to help the patients. (send)
8. To help children solve psychological problem, more hotlines (建立起来了) in recent years. (set)
9. Many mysteries about the universe
(没有破解) so far. (solve)
10. Up to now, all that can be eaten
(已经吃光了) by them. (eat)
[【参考答案】
1. have been sent discovered
2. has been used
3. have been awarded
4. have been trained
5. have tractor been used
6. have been performed
7. have been sent abroad
8. have been set up
9. haven’t been solved
10. has been eaten up