Present Perfect Progressive
The Present Perfect Progressive is also called present perfect continuous. It is used when a long action has started in the past and has just ended (usually recently) or is still continuing. There has to be a connection to the present. The verbs have to express a long period of time.
Key words: all day, how long, for, since
How to form the Present Perfect Progressive
I, you, we, they - have been + ing form of the verb
he, she, it - has been + ing form of the verb
I've been reading. / They've been listening.
She's been dancing. / He's been watching.
I, you, we, they - have not (haven't) been + ing form of the verb
he, she, it - has not (hasn't) been + ing form of the verb
They haven't been working in the office all day.
Have they been helping you since this morning?
Have/Has - subject - been + ing form of the verb
How long has she been working at the office?
Question word - has/have - subject - been + ing form of the verb
Use of the Present Perfect Progressive
I have been working all day.
She has been watching TV since 7.30.
Nick has been lying in bed for two days. - He is still in bed or has just got up.
She has been working since 4 o'clock. - She is still working, or she has just stopped working.
How long have they been playing?