could fly
Verbo irregular: fly - flew- flown

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could fly
you could fly
he could fly
we could fly
you could fly
they could fly 	I could be flying
you could be flying
he could be flying
we could be flying
you could be flying
they could be flying	I could have flown
you could have flown
he could have flown
we could have flown
you could have flown
they could have flown	I could have been flying
you could have been flying
he could have been flying
we could have been flying
you could have been flying
they could have been flying	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not fly
you could not fly
he could not fly
we could not fly
you could not fly
they could not fly 	I could not be flying
you could not be flying
he could not be flying
we could not be flying
you could not be flying
they could not be flying	I could not have flown
you could not have flown
he could not have flown
we could not have flown
you could not have flown
they could not have flown	I could not have been flying
you could not have been flying
he could not have been flying
we could not have been flying
you could not have been flying
they could not have been flying	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I fly?
could you fly?
could he fly?
could we fly?
could you fly?
could they fly? 	could I be flying?
could you be flying?
could he be flying?
could we be flying?
could you be flying?
could they be flying? 	could I have flown?
could you have flown?
could he have flown?
could we have flown?
could you have flown?
could they have flown? 	could I have been flying?
could you have been flying?
could he have been flying?
could we have been flying?
could you have been flying?
could they have been flying? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not fly?
could you not fly?
could he not fly?
could we not fly?
could you not fly?
could they not fly? 	could I not be flying?
could you not be flying?
could he not be flying?
could we not be flying?
could you not be flying?
could they not be flying? 	could I not have flown?
could you not have flown?
could he not have flown?
could we not have flown?
could you not have flown?
could they not have flown? 	could I not have been flying?
could you not have been flying?
could he not have been flying?
could we not have been flying?
could you not have been flying?
could they not have been flying?