Past Perfect Continuous Tense
Past Perfect Continuous Tense: Past Perfect Continuous Tense is used to refer to the action that had been going on for sometimes before another past action happened
Had been is used as an auxiliary verb ing is added with the main verb.
Example: It had been raining since morning.
I had been working for two hours.
He had been waiting for you since morning.
***Structure: Sub+had been+v+ing+ob+extension.
I had been working in this company for five years.
We had been reading in this school for ten years.
They had been doing the work in the garden for two hours.
My mother had been cooking food since morning.
***Structure: Sub+had+not+ been+v+ing+ob+extension.
He had not been working since morning
The boys had not been coming to play for few days.
The old man had not been working here since last Monday.
Had not the teacher coming to your school since last Sunday?
*** Noted that if sub is noun then not is used before subject.
Had he not been working here for one week?
Had we not been waiting for you for two hours?
Had not your father working in this company?