Using the present perfect continuous
(also called the present perfect progressive)
1: To say how long for unfinished actions which started in the past and continue to the present. We often use this with 'for' and 'since' (see the the present perfect simple page for more about 'for' and 'since').
- I've been living in London for two years.
- She's been working here since 2004.
- We've been waiting for the bus for hours.
- I've been here for hours.
I've been being here for hours.
- I've been going to the gym a lot recently.
- They've been living with his mother while they look for a house.
- I've been reading a lot recently.
3: Actions which have recently stopped (though the whole action can be unfinished) and have a result, which we can often see, hear, or feel, in the present. We don't use a time word here.
- I'm so tired, I've been studying.
- I've been running, so I'm really hot.
- It's been raining so the pavement is wet.
If you want to learn more about the tenses, especially about how to use them when you're speaking, you could try my video course, Terrific Tenses, which is part of Perfect English Grammar Plus.