La
estructura básica del negativo del presente perfecto:
Suj
Aux
Not
Verbo
I
have
not
eaten
something.
No he comido algo.
You
have
not
talked
to somebody.
no has hablado con alguien.
He
has
not
listened
to something.
No ha escuchado algo. (él)
She
has
not
read
something.
No ha leído algo. (ella)
It
has
not
gone
somewhere.
No ha ido a algún sitio.
We
have
not
looked
at something.
No hemos mirado algo.
You
have
not
worn
something.
No habéis llevado algo puesto.
They
have
not
sat
somewhere.
No se han sentado en algún sitio.
Nota: Contracciones: Se suele contraer
"It has" con "it's", "it has not"
con "it hasn't", "you have" con "you've",
"we have not" con "we haven't", etc.