The Present Perfect Continuous:
An action which began in the past and is still continuing or has just finished can be either the present perfect or present perfect continuous.
l began working______now___________l
He has been working (in progress)

Structure:
The present perfect form of the verb to be with the present participle.
(I, you, we, they) have been + verb -ing
(he she it) has been + verb -ing

Negative
Subject+ have not/haven't, has not/ hasn't + been +verb ing

Interrogative
Has/have + subject + been + verb –ing?

Examples:
The team has been working together for two years.
They haven't been working very hard.
Has the boss been running the project?

Conditions:
Verbs such as expect, hope, learn, lie, live, look, rain, sleep.
Time expressions are not necessary. (for since yet already etc…)