Present perfect vs. Present perfect continuous. Present perfect. For talking about indefinite time and duration of time from past to now http://www.englishpage.com/verbpage/presentperfect.html http://www.englishclub.com/grammar/verb-tenses_present-perfect_u.htm.
For talking about
The present perfect continuous is often used the same as the present perfect, but it emphasizes that an action has just stopped, has recently occurred, or is continuing up until now.
Both possible with slight difference in emphasis:It’s been raining steadily for a week./It has rained steadily for a week.He has been workinghardsince he started this job 20 years ago./He has workedhard since he started this job 20 years ago.
I’ve played soccer twice this week.
Present perfect continuous:
I’ve been playing a lot of soccer recently.
EXAMPLE:You don’t know what page we’re on because you haven’t been paying attention. ***Have you been smoking/drinking? (suggests that the person you are speaking to smells like smoke or liquor)
A: (A unexpectedly sees B) Where have you been? I’vebeen looking for you.
B: Oh, I’vebeen in the library. (I’ve photocopied my term paper) I’vebeen photocopying my term paper. (= I just finished photocopying it.)
Have you ever been going to France?
2. I have never studied Chinese.
I have never been studying Chinese.
I have madeapple pie many times.
I have been making apple pie many times.
PRESENT PERFECT CONTINUOUS
is a continuous form.
(e.g., believe, like, seem, know, etc.)
that are not used in the
present/past/future continuous are also not used in the present perfect continuous.
I’ve only known her for a few days.
I’ve only been knowing her for a few days.
She has had the flu for two weeks.
She has been having the flu for two weeks.