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
he could roast
we could roast
you could roast
they could roast 	I could be roasting
you could be roasting
he could be roasting
we could be roasting
you could be roasting
they could be roasting	I could have roasted
you could have roasted
he 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
he 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 couldn't roast
you couldn't roast
he couldn't roast
we couldn't roast
you couldn't roast
they couldn't roast 	I couldn't be roasting
you couldn't be roasting
he couldn't be roasting
we couldn't be roasting
you couldn't be roasting
they couldn't be roasting	I couldn't have roasted
you couldn't have roasted
he couldn't have roasted
we couldn't have roasted
you couldn't have roasted
they couldn't have roasted	I couldn't have been roasting
you couldn't have been roasting
he couldn't have been roasting
we couldn't have been roasting
you couldn't have been roasting
they couldn't have been roasting	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I roast?
could you roast?
could he roast?
could we roast?
could you roast?
could they roast? 	could I be roasting?
could you be roasting?
could he be roasting?
could we be roasting?
could you be roasting?
could they be roasting? 	could I have roasted?
could you have roasted?
could he 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 he 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 	
couldn't I roast?
couldn't you roast?
couldn't he roast?
couldn't we roast?
couldn't you roast?
couldn't they roast? 	couldn't I be roasting?
couldn't you be roasting?
couldn't he be roasting?
couldn't we be roasting?
couldn't you be roasting?
couldn't they be roasting? 	couldn't I have roasted?
couldn't you have roasted?
couldn't he have roasted?
couldn't we have roasted?
couldn't you have roasted?
couldn't they have roasted? 	couldn't I have been roasting?
couldn't you have been roasting?
couldn't he have been roasting?
couldn't we have been roasting?
couldn't you have been roasting?
couldn't they have been roasting?