1) We use the Present Perfect Continuous to talk about actions that started in the past and continue into the present.
The structure:
Have/has (not) + been + …Ing
What have you been doing lately?
I’ve been working two jobs for the last six months.
How long has she been studying English?
She’s been studying English for 2 years.
2) The present perfect continuous can also be used without a time expression to describe an activity that started in the past but it is still in progress:
I’ve been thinking about taking a trip.