完成进行时强调动作的过程，完成时强调动作的结果。
现在完成进行时所强调的是在过去一段时期内某项活动的持续性，因此强调的是动作本身。现在完成时则是强调动作的结果。
a. My hands are very dirty. I’ve been painting the house.
我的手很脏，我一直在给房子刷漆。
b. I have painted the house green.（The house was white, but now it’s green.）
我把房子刷成了绿色。
c. Sorry about the mess—I’ve been painting the house.
（painting活动还没有结束，房子还没有收拾，所以屋子很乱。）
d. I’ve painted two rooms since lunchtime.
（painted的结果是“两间房子都已粉刷完毕”。）
e. I have been reading your grammar book. After I finish it,I’ll discuss some problems with you.
f.I have read your grammar book and I have questions to ask you.
g. I have been reading the book you lent me but I haven’t finished it yet.
h. I have read the book you lent me, so you can have it back now.
i. — Oh, I have been sitting in the same position too long. My legs have fallen asleep.
噢，我一个姿势坐得太久了，两条腿都麻木了。
—Shake it a little before you get up.
站起来之前，你先把腿抖一抖。
从上一句我们可看出：由于长时间持续地坐着 (have been sitting)，造成的结果是My legs have fallen asleep。因此，完成进行时表示活动的延续性；完成时强调动作的结果。