La estructura básica del respuestas cortas del presente perfecto:



Af.
     
Neg.
 
Yes,
I have.
     
No,
I haven't.
Yes,
you have.
     
No,
you haven't.
Yes,
he has.
     
No,
he hasn't.
Yes,
she has.
     
No,
she hasn't.
Yes,
it has.
     
No,
it hasn't.
Yes,
we have.
     
No,
we haven't.
Yes,
you have.
     
No,
you haven't.
Yes,
they have.
     
No,
they haven't.