"do" versus "be"
Verb "do" in support of another verb
Why did you shout?
Verb "be" taking support of "do"
Do not be angry.
Verb "be" NOT taking support of "do"
I am not angry.
Verb "be" in support of another verb
We are called.
I am calling others.
Verb "be" in support of "do"
My work is done.
He is doing his duty.