I am not quite sure how to use "will had", "had" and "had been" to make sentences. All I know is…
I will have eaten my breakfast by 2pm.
I have finished my project already.
I have been working on my assignment since last Monday.
But I'm not quite sure how to use "will had", "had", "had been"
Best Answer
"will had" is incorrect.
"had" is the past tense or the past participle of "have". i.e. either "I had a taco" or "I had played the game too long". "played" could any verb.
The difference between "have been" and "had been" is that "have been" describes something you have done occasionally and might be ongoing:
"I have been to that restaurant many times."
Had been describes a specific past action, usually indicating something has changed:
"I had been to the restaurant before, but never with a large group."