could roar
Verbo regular: roar - roared- roared

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could roar
you could roar
he could roar
we could roar
you could roar
they could roar 	I could be roaring
you could be roaring
he could be roaring
we could be roaring
you could be roaring
they could be roaring	I could have roared
you could have roared
he could have roared
we could have roared
you could have roared
they could have roared	I could have been roaring
you could have been roaring
he could have been roaring
we could have been roaring
you could have been roaring
they could have been roaring	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not roar
you could not roar
he could not roar
we could not roar
you could not roar
they could not roar 	I could not be roaring
you could not be roaring
he could not be roaring
we could not be roaring
you could not be roaring
they could not be roaring	I could not have roared
you could not have roared
he could not have roared
we could not have roared
you could not have roared
they could not have roared	I could not have been roaring
you could not have been roaring
he could not have been roaring
we could not have been roaring
you could not have been roaring
they could not have been roaring	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I roar?
could you roar?
could he roar?
could we roar?
could you roar?
could they roar? 	could I be roaring?
could you be roaring?
could he be roaring?
could we be roaring?
could you be roaring?
could they be roaring? 	could I have roared?
could you have roared?
could he have roared?
could we have roared?
could you have roared?
could they have roared? 	could I have been roaring?
could you have been roaring?
could he have been roaring?
could we have been roaring?
could you have been roaring?
could they have been roaring? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not roar?
could you not roar?
could he not roar?
could we not roar?
could you not roar?
could they not roar? 	could I not be roaring?
could you not be roaring?
could he not be roaring?
could we not be roaring?
could you not be roaring?
could they not be roaring? 	could I not have roared?
could you not have roared?
could he not have roared?
could we not have roared?
could you not have roared?
could they not have roared? 	could I not have been roaring?
could you not have been roaring?
could he not have been roaring?
could we not have been roaring?
could you not have been roaring?
could they not have been roaring?