Question

when to use has been ,has been and had been​

Answer 1

"Has been" and "have been" are both in the present perfect tense. "Has been" is used in the third-person singular and "have been" is used for first- and second-person singular and all plural uses.

The present perfect tense refers to an action that began at some time in the past and is still in progress.

"Had been" is the past perfect tense and is used in all cases, singular and plural. The past perfect tense refers to something that began in the past and was still true at another time that also was in the past.