(1) -Is Rick here? -He is gone.
(2) -I am finished with that customer. Who's next?
(3) -Where are you? -I am stopped at a red light.
Such using "to be + adjective" as in the examples above is rather hard for me to understand.
I know I can just replace it with "to have + past participle" but I want to understand it literally.
And the problem is that I don't know how to call this in terms of English grammar.
So could you tell me please what grammar term I should type in the google to find the topic about it to not deal with every single case separately but to know the sense of such using as a whole?
Usual examples which I understand:
I was pleased after talking to the young lady. = Something / someone pleased me. — most likely "talking to the young lady pleased me" but that's not the point
I am a little confused now. = Something / someone confused me a little.
They are quite understandable to me because I perceive them like a passive.
He is gone. ≠ Something / someone went me. (a strange sentence)
I am finished with that customer. ≠ Something /someone finished me.
I am stopped at a red light. ≠ Something / someone stopped me at a red light.
Also: I am stopped at a red light. ≠ A red light stopped me. — because for this equality to be true, it must be with "by": I am stopped by a red light. = A red light stopped me.
That is, I can't perceive these examples as a passive. That's why they are different from the usual ones.