to be - быть, являться (для описания объектов)

​ +
I am (a manager).
You are (a manager).
We are (managers).
They are (managers).
He is (a manager).
She is (a manager).
It is (a billboard).

I am = I'm / He is = He's / You are = You're

​​ --
I am not (a manager).
You are not (a manager).
We are not (managers).
They are not (managers).
He is not (a manager).
She is not (a manager).
It is not (a billboard).

are not = aren't
is not = isn't

​​​ ?
Am I (a manager)?
Are you (a manager)?
Are we (managers)?
Are they (managers)?
Is he (a manager)?
Is she (a manager)?
Is it (a billboard)?

​verbs - глаголы (для указания действий)

+
I see (a poster).
You see (a poster).
We see (a poster).
They see (a poster).
He sees (a poster).
She sees (a poster).
It costs (100rub).

​--
I don't see (a poster).
You don't see (a poster).
We don't see (a poster).
They don't see (a poster).
He doesn't see (a poster).
She doesn't see (a poster).
It doesn't cost (100rub).

do not = don't
does not = doesn't

​?
Do I see (a poster)?
Do you see (a poster)?
Do we see (a poster)?
Do they see (a poster)?
Does he see (a poster)?
Does she see (a poster)?
Does it cost (a lot)?