新概念英语第二册语法解析及练习题(21)

2018-10-10 14:14:00来源:网络

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  六.现在完成进行时:have / has + been + 现在分词

  1.表示从过去某时开始发生,一直延续到现在且可能延续下去的动作。(最好将此定义读 5遍)

  I've been waiting for an hour but she hasn't come.

  He has been running after her for 8 years.(run after: 追求)

  2.表某种感情色彩。

  I've been wanting to see you for so many years.

  Who's been telling you such nonsense.

  释惑要点:现在完成时与现在完成进行时的对比:

  现在完成时强调“结果”,而完成进行时强调“动作的延续”。

  I have thought of it.(我已想到了这一点。)

  I have been thinking of it.(我一直在想这一点。)

  Jim has painted the door.(杰姆已将门油漆过了。)

  Jim has been painting the door.(杰姆一直在油漆门。)

  练习:

  1. They ________ us since five o'clock this morning.

  A. are helping B. have been helping

  C. have been helped D. have helped

  2. I ________ the book the whole day, yet I haven't finished it.

  A. have been reading B. have read

  C. am reading D. had been reading

  3. Please come in. We ________ about your paper.

  A. talk B. had been talking

  C. have been talking D. would have talked

  4. Such natural resources as coal and petroleum ________.

  A. gradually are exhausted B. are being gradually exhausted

  C. have gradually exhausting D. have been exhausting gradually

  5. It ________ almost every day so far this month.

  A. is raining B. rained C. rains D. has been raining

  用所给动词正确时态填空。

  1. You should go to bed. You ________ (watch) TV for 5 hours.

  2. I ________ (write) letters since breakfast.

  3. I ________ (write) 3 letters since breakfast.

  4. Sorry, but Mr. Smith ________ (leave) for Beijing.

  5. I ________ (look) for him everywhere, where can he be?

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