PRESENT PERFECT CONTINOUS

Express an action that started in the past and is still going on in the present.
Express an action that started in the past and has just finished.

(+) I have been working here since 2011.

(-) You haven't been studying for the final exams.

(?) Has he been living on the next door since 1999?

(=) Yes, he has

How long

since, for

every night, every day

(+) Subject - have/has - been - verb (ing) - complement

(-) Subject - haven't/hasn't - been - verb (ing) - complement.

(?) Have/Has - subject - been - verb (ing) - complement ?

(=) Yes, (I/You/He/She/It/We/They) - have/has; No, (I/You/He/She/It/We/They) - haven't/hasn't.