Present Perfect

El 'Present Perfect' se construye con el verbo auxiliar have (haber) y el participio pasado del verbo principal. Recuerde que la contracción de have es 've y la de has es 's, y que la forma negativa puede tener dos posibles contracciones, como por ejemplo I've not.../I haven't....

sujeto + have + participio

SINGULAR - PLURAL

I have (´ve) gone
you have (´ve) gone
he has (´s) gone
she has (´s) gone
it has (´s) gone
we (´ve) gone
you (´ve) gone
they (´ve) gone

He has gone to work. - They have gone home.
(Él) se ha ido al trabajo. - Se han ido a casa.

NEGATIVA

sujeto + have + not + participio

SINGULAR - PLURAL

I have not had
you have not had
he has not had
she has not had
it has not had
we have not had
you have not had
they have not had

She hasn't had breakfast. - They´ve not had a bath yet.
(Ella) no ha desayunado. - No se han bañado aún.

INTERROGATIVA

have + sujeto + participio

have I seen?
have you seen?
has he seen?
has she seen?
has it seen?
have we seen?
have you seen?
have they seen?

Have you seen Mary today? - Have they seen the doctor?
¿Has visto a Mary hoy? - ¿Han visto al médico?