Present Perfect Continuous

USES:
- To say how long for unfinished actions which started in the past and continue to the present.
- Actions which have just stopped and have a result.


FORM:

- AFFIRMATIVE: Have been + Verb -ing            *Third person singular use has*
I have been playing basketball.          She has been playing basketball.

- NEGATIVE: Have not been + Verb -ing                *Third person singular use has*
I haven't been playing football.           She hasn't been playing football.

- QUESTION: Have/Has + Subject +  Been + Verb -ing + Complements?    
Have you been playing tennis?         Has she  been playing tennis?

TO HAVE (present) is the auxiliary verb.

Links to exercises:

Present perfect continuous 1

Present perfect continuous 2

Present perfect continuous 3