What you must keep in mind is that "while" doesn't only carry the literal meaning of "during a period of time".
For example, the first sentence would read completely differently depending on whether you use "while" or not.
"Being a good person, he devoured kittens" means that he devours kittens because he's a good person. Compare, for example, "Being stubborn as always, he disagreed with us" - it means that he disagreed with us because he was stubborn.
"While being a good person, he devoured kittens" means that the person is generally good, but despite that they devour kittens. Compare "While being stubborn as always, he could see our point" - he was still stubborn, but despite that he agreed to something.
In the second sentence, "while/when" might technically be correct, but it reads awkwardly - something like "you agree to our terms as long as you're using the services". I'd rather use "by using" here - meaning that "starting to use the services carries an implicit agreement to our terms".
In the third one, "during providing" is ugly - you generally avoid two -ings in a row. Otherwise, I think both are fine, though "while providing" reads better to me personally.
The fourth is a bit similar to the first - the meaning flips when you apply "while" to the sentence. So either this low must be applied because it's the main instrument etc. (without "while"), or despite that (with "while").
We have the adjective drunk which means "inebriated, physically and mentally showing the effects of having consumed too much alcohol".
It is used as a predicate complement:
That man is very drunk. Stop serving him and find him a taxicab.
His car was broadsided by a man driving drunk.
It is used also as an adjective before the noun:
He was broadsided by a drunk driver.
drunken is an older form of the past participle of the verb drink, and it hasn't been used much as past-participle for the last 200 years though it exists alongside drunk as an adjective.
You drunken hooligans, get out of my donut shop now, or I'll call the police!
Best Answer
I was bored describes how you felt. Was is simple past, and bored is an adjective (though "was bored" could also be parsed as a passive, with "was bored" being the past form of the passive; either way, the meaning is the same). It can be used to discuss your past feelings: I was bored yesterday during the long lecture; I was bored by his constant moaning.
I had been bored is the past perfect (had been) plus the adjective (bored): I had been bored before I received the new book.
I had bored is the past perfect of the transitive verb to bore, as in: The professor then realised that he had bored the students almost to death.