could sleep
Verbo irregular: sleep - slept- slept

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could sleep
you could sleep
he could sleep
we could sleep
you could sleep
they could sleep 	I could be sleeping
you could be sleeping
he could be sleeping
we could be sleeping
you could be sleeping
they could be sleeping	I could have slept
you could have slept
he could have slept
we could have slept
you could have slept
they could have slept	I could have been sleeping
you could have been sleeping
he could have been sleeping
we could have been sleeping
you could have been sleeping
they could have been sleeping	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not sleep
you could not sleep
he could not sleep
we could not sleep
you could not sleep
they could not sleep 	I could not be sleeping
you could not be sleeping
he could not be sleeping
we could not be sleeping
you could not be sleeping
they could not be sleeping	I could not have slept
you could not have slept
he could not have slept
we could not have slept
you could not have slept
they could not have slept	I could not have been sleeping
you could not have been sleeping
he could not have been sleeping
we could not have been sleeping
you could not have been sleeping
they could not have been sleeping	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I sleep?
could you sleep?
could he sleep?
could we sleep?
could you sleep?
could they sleep? 	could I be sleeping?
could you be sleeping?
could he be sleeping?
could we be sleeping?
could you be sleeping?
could they be sleeping? 	could I have slept?
could you have slept?
could he have slept?
could we have slept?
could you have slept?
could they have slept? 	could I have been sleeping?
could you have been sleeping?
could he have been sleeping?
could we have been sleeping?
could you have been sleeping?
could they have been sleeping? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not sleep?
could you not sleep?
could he not sleep?
could we not sleep?
could you not sleep?
could they not sleep? 	could I not be sleeping?
could you not be sleeping?
could he not be sleeping?
could we not be sleeping?
could you not be sleeping?
could they not be sleeping? 	could I not have slept?
could you not have slept?
could he not have slept?
could we not have slept?
could you not have slept?
could they not have slept? 	could I not have been sleeping?
could you not have been sleeping?
could he not have been sleeping?
could we not have been sleeping?
could you not have been sleeping?
could they not have been sleeping?