Verbo regular: water-ski - water-skied - water-skied
Afirmación
Forma simple
I could water-ski you could water-ski he could water-ski we could water-ski you could water-ski they could water-ski
Forma con V-ing
I could be water-skiing you could be water-skiing he could be water-skiing we could be water-skiing you could be water-skiing they could be water-skiing
Perfecto
I could have water-skied you could have water-skied he could have water-skied we could have water-skied you could have water-skied they could have water-skied
Perfecto con V-ing
I could have been water-skiing you could have been water-skiing he could have been water-skiing we could have been water-skiing you could have been water-skiing they could have been water-skiing
Negación
Forma simple
I could not water-ski you could not water-ski he could not water-ski we could not water-ski you could not water-ski they could not water-ski
Forma con V-ing
I could not be water-skiing you could not be water-skiing he could not be water-skiing we could not be water-skiing you could not be water-skiing they could not be water-skiing
Perfecto
I could not have water-skied you could not have water-skied he could not have water-skied we could not have water-skied you could not have water-skied they could not have water-skied
Perfecto con V-ing
I could not have been water-skiing you could not have been water-skiing he could not have been water-skiing we could not have been water-skiing you could not have been water-skiing they could not have been water-skiing
Forma interrogativa
Forma simple
could I water-ski? could you water-ski? could he water-ski? could we water-ski? could you water-ski? could they water-ski?
Forma con V-ing
could I be water-skiing? could you be water-skiing? could he be water-skiing? could we be water-skiing? could you be water-skiing? could they be water-skiing?
Perfecto
could I have water-skied? could you have water-skied? could he have water-skied? could we have water-skied? could you have water-skied? could they have water-skied?
Perfecto con V-ing
could I have been water-skiing? could you have been water-skiing? could he have been water-skiing? could we have been water-skiing? could you have been water-skiing? could they have been water-skiing?
Forma interro-negativa
Forma simple
could I not water-ski? could you not water-ski? could he not water-ski? could we not water-ski? could you not water-ski? could they not water-ski?
Forma con V-ing
could I not be water-skiing? could you not be water-skiing? could he not be water-skiing? could we not be water-skiing? could you not be water-skiing? could they not be water-skiing?
Perfecto
could I not have water-skied? could you not have water-skied? could he not have water-skied? could we not have water-skied? could you not have water-skied? could they not have water-skied?
Perfecto con V-ing
could I not have been water-skiing? could you not have been water-skiing? could he not have been water-skiing? could we not have been water-skiing? could you not have been water-skiing? could they not have been water-skiing?