could roast
Verbo regular: roast - roasted- roasted

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could roast
you could roast
she could roast
we could roast
you could roast
they could roast 	I could be roasting
you could be roasting
she could be roasting
we could be roasting
you could be roasting
they could be roasting	I could have roasted
you could have roasted
she could have roasted
we could have roasted
you could have roasted
they could have roasted	I could have been roasting
you could have been roasting
she could have been roasting
we could have been roasting
you could have been roasting
they could have been roasting	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not roast
you could not roast
she could not roast
we could not roast
you could not roast
they could not roast 	I could not be roasting
you could not be roasting
she could not be roasting
we could not be roasting
you could not be roasting
they could not be roasting	I could not have roasted
you could not have roasted
she could not have roasted
we could not have roasted
you could not have roasted
they could not have roasted	I could not have been roasting
you could not have been roasting
she could not have been roasting
we could not have been roasting
you could not have been roasting
they could not have been roasting	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I roast?
could you roast?
could she roast?
could we roast?
could you roast?
could they roast? 	could I be roasting?
could you be roasting?
could she be roasting?
could we be roasting?
could you be roasting?
could they be roasting? 	could I have roasted?
could you have roasted?
could she have roasted?
could we have roasted?
could you have roasted?
could they have roasted? 	could I have been roasting?
could you have been roasting?
could she have been roasting?
could we have been roasting?
could you have been roasting?
could they have been roasting? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not roast?
could you not roast?
could she not roast?
could we not roast?
could you not roast?
could they not roast? 	could I not be roasting?
could you not be roasting?
could she not be roasting?
could we not be roasting?
could you not be roasting?
could they not be roasting? 	could I not have roasted?
could you not have roasted?
could she not have roasted?
could we not have roasted?
could you not have roasted?
could they not have roasted? 	could I not have been roasting?
could you not have been roasting?
could she not have been roasting?
could we not have been roasting?
could you not have been roasting?
could they not have been roasting?