Definition:-
We use Past perfect Progressive Tense when something was started in a past and was continued in the past with respect to time period.
Formulas:-
Affirmative : Subject+had+been+verb(Present form+ing)+object+Since/for.
Negative : Subject+had+not+been+verb(Present form+ing)+object+Since/for.
Interrogative : Had+subject+been+verb(Present form+ing)+object+Since/for?
InterroNegative : Hadn’t+subject+been+verb(Present form+ing)+object+Since/for?
Short Form:-
· Had not = Hadn’t
Use of “Since” and “For”:-
· Since : Since is used when starting time is given.
· For : For is used when time duration is given.
Examples:-
· I had been learning English for 2 years.
· Bill hadn’t been speaking ill of Robert since morning.
· Had you been giving us cold shoulder for 1 hour?
· Hadn’t Robert been looking for a job for the last 2 months?
· What had you been doing since morning?
· Why had you been staying awake for somedays?
Another Use of Past Perfect Progressive Tense
We can also use past perfect progressive tense when something was going on before past simple.
Examples:-
· Robert had been teaching English before Bill came.
· Robert hadn’t been teaching English before Bill came.
· Had Robert been teaching English before Bill came?
· Hadn’t Robert been teaching English before Bill came?