could promise
Verbo regular: promise - promised- promised

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could promise
you could promise
he could promise
we could promise
you could promise
they could promise 	I could be promising
you could be promising
he could be promising
we could be promising
you could be promising
they could be promising	I could have promised
you could have promised
he could have promised
we could have promised
you could have promised
they could have promised	I could have been promising
you could have been promising
he could have been promising
we could have been promising
you could have been promising
they could have been promising	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not promise
you could not promise
he could not promise
we could not promise
you could not promise
they could not promise 	I could not be promising
you could not be promising
he could not be promising
we could not be promising
you could not be promising
they could not be promising	I could not have promised
you could not have promised
he could not have promised
we could not have promised
you could not have promised
they could not have promised	I could not have been promising
you could not have been promising
he could not have been promising
we could not have been promising
you could not have been promising
they could not have been promising	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I promise?
could you promise?
could he promise?
could we promise?
could you promise?
could they promise? 	could I be promising?
could you be promising?
could he be promising?
could we be promising?
could you be promising?
could they be promising? 	could I have promised?
could you have promised?
could he have promised?
could we have promised?
could you have promised?
could they have promised? 	could I have been promising?
could you have been promising?
could he have been promising?
could we have been promising?
could you have been promising?
could they have been promising? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not promise?
could you not promise?
could he not promise?
could we not promise?
could you not promise?
could they not promise? 	could I not be promising?
could you not be promising?
could he not be promising?
could we not be promising?
could you not be promising?
could they not be promising? 	could I not have promised?
could you not have promised?
could he not have promised?
could we not have promised?
could you not have promised?
could they not have promised? 	could I not have been promising?
could you not have been promising?
could he not have been promising?
could we not have been promising?
could you not have been promising?
could they not have been promising?