El verbo "to be" en presente y pasado progresivo se usa con algunos adjetivos
y sustantivos para referirse a un comportamiento momentáneo, pero
no con adjetivos que describan estados.
PRESENTE PROGRESIVO
PASADO PROGRESIVO
I
am
being
You
are
being
He
is
being
She
is
being
It
is
being
We
are
being
You
are
being
They
are
being
I
was being
You
were being
He
was being
She
was being
It
was being
We
were being
You
were being
They
were being
Ejemplos:
1. Your brother is being a fool today.
2. Your brother was being naughty yesterday.