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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

 新东方在线新概念小编为大家带来新概念英语第二册语法解析及练习题一文,希望对大家的新概念英语学习有所帮助。更多精彩尽请关注新东方在线新概念英语学习网(http://nce.koolearn.com)!

  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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