使用现在完成进行时应注意：
We\'ve just been talking about you . 我们正谈你来着。(动作刚刚停止)
The CCTV has been broadcasting English programmes ever since 1977 . (SEFC SBIA P46) 自1977年起中央电视台一直在播送英语节目。(动作仍在继续)
现在完成进行时也可以用来表示现在以前这段时间反复发生的事情。如：
She has been cycling to work for the last three weeks . 最近三星期她一直骑自行车上班。
现在完成时与现在完成进行时用法比较：
1 . 现在完成时强调的是完成或对现在有影响的动作，而现在完成进行时强调的是持续了一段时间的动作，这个动作刚刚停止或仍在继续。请比较：
I have written an article . (已完成)
I have been writing an article . (还在写) 又如：
The Chinese have been making paper for two thousand years . (SBIB , P22) 中国人造纸已有两千年的历史了。(动作仍在继续)
They have been widening the road . (还在进行)
They have widened the road . (已经完成)
2 . 表示状态、感觉、心理活动的静态动词一般不用于现在完成进行时；若表示状态一直持续到现在，可用现在完成时。即现在完成进行时不能代替以下例句中的现在完成时。
We have known each other since childhood .
I haven\'t seen him for years .
They have always had a big garden . 他们一直有座大花园。
How long have you known that ? 你知道这事多久了 ?
3 . 现在完成进行时可以和时间短语连用，也可以不用，其意义区别不大；而现在完成时一般要与象 for two years、since July , since early morning , these few days 等一些时间短语连用，若不用时间短语，现在完成时只表示完成了的单一动作。如：
My shoe has been pressing against my foot . So it hurts a bit . (SB2A , P61)
我的鞋子挤脚，所以脚有点疼。(不用时间短语)
I have already closed the door . 我已经把门关上了。(表示完成的单一动作)
He has been back for two days . 他回来两天了。(与时间短语连用)
He has been trying to work out the maths problem since early morning .
We have been having fine weather for the past few days .
I\'m rather tired . I\'ve been playing basketball since breakfast .
4 . 有些延续性动词，如 live , teach , work , study , learn , stay 有时用现在完成时与用现在完成进行时意义区别不大。如：
I have lived here for ten years . (= I have been living here for ten years .) 我住在这儿已十年了。
How long have you studied English ? (=How long have you been studying English ? ) 你学习英语多久了 ?
另需注意的是：现在完成进行时一般不用于被动语态。
5. 在现代英语中，动词 sit , lie , wait , stay 等用现在完成进行时比用现在完成时更合习惯。
I\'ve been sitting here all afternoon .
I\'ve been waiting for you since morning .
I\'ve been staying in a hotel so far .
6. 用“How long … ?”结构询问目前正在进行的动作的时间长度时多用现在完成进行时。
How long have you been sewing ?
How long have you been learning English .
◆ I\'m sorry to have done that . 我那样作，真对不起。
〖 释疑〗本句中的 to have done 时不定式的完成式，表示动作提前完成。使用不定式的完成式应注意：
1 . 动词不定式的完成体
1) 如果不定式动作是瞬间动作动词，它表示一个在现在或过去某时之前已经完成的动作；如果是持续动作动词，它表示一个一直持续到现在或过去某时的动作。
a . 常见的可接不定式完成体的动词有： happen / see / appear / prove / pretend / seem , etc .
He seemed to have lived a happy life .