现在完成进行时：

1．构成：have / has been 现在分词

【随报随学】新概念1-3册体验课

孔程程 苏延奇 李延隆
课时：15

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2．功能：

（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.

（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.

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。）

测试精编

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?

（后设答案，大家不要偷看哦~(*^__^*) 嘻嘻……）

KEYS

1. B    2. A    3. C    4. B    5. D

用所给动词正确时态填空：
1. have been watching           2. have been writing
3. have written                     4. has left
5. have been looking

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