現(xiàn)在完成進(jìn)行時：

    1.構(gòu)成：have / has + been + 現(xiàn)在分詞

    2.功能：

    （1 ）表示從過去某時開始發(fā)生，一直延續(xù)到現(xiàn)在且可能延續(xù)下去的動作。

    （最好將此定義讀 5遍）？。 I've been waiting for an hour but she hasn't
come. ？。 He has been running after her for 8 years.

    （2 ）表某種感情色彩。？。 I've been wanting to see you for so many
years.？。 Who's been telling you such nonsense.

    現(xiàn)在完成時與現(xiàn)在完成進(jìn)行時的對比：現(xiàn)在完成時強調(diào)“結(jié)果”，而完成進(jìn)
行時強調(diào)“動作的延續(xù)”。？。 I have thought of it.（我已想到了這一點。）？。

    I have been thinking of it. （我一直在想這一點。）？。 Jim has painted
the door. （杰姆已將門油漆過了。）？。 Jim has been painting the door.
（杰姆一直在油漆門。）

    測試精編

    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

    用所給動詞正確時態(tài)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 ？

    （后設(shè)答案，大家不要偷看哦~ （*^__^*）嘻嘻……）

    KEYS

    1. B 2. A 3. C 4. B 5. D