could delay
Verbo regular: delay - delayed- delayed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could delay
you could delay
he could delay
we could delay
you could delay
they could delay 	I could be delaying
you could be delaying
he could be delaying
we could be delaying
you could be delaying
they could be delaying	I could have delayed
you could have delayed
he could have delayed
we could have delayed
you could have delayed
they could have delayed	I could have been delaying
you could have been delaying
he could have been delaying
we could have been delaying
you could have been delaying
they could have been delaying	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not delay
you could not delay
he could not delay
we could not delay
you could not delay
they could not delay 	I could not be delaying
you could not be delaying
he could not be delaying
we could not be delaying
you could not be delaying
they could not be delaying	I could not have delayed
you could not have delayed
he could not have delayed
we could not have delayed
you could not have delayed
they could not have delayed	I could not have been delaying
you could not have been delaying
he could not have been delaying
we could not have been delaying
you could not have been delaying
they could not have been delaying	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I delay?
could you delay?
could he delay?
could we delay?
could you delay?
could they delay? 	could I be delaying?
could you be delaying?
could he be delaying?
could we be delaying?
could you be delaying?
could they be delaying? 	could I have delayed?
could you have delayed?
could he have delayed?
could we have delayed?
could you have delayed?
could they have delayed? 	could I have been delaying?
could you have been delaying?
could he have been delaying?
could we have been delaying?
could you have been delaying?
could they have been delaying? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not delay?
could you not delay?
could he not delay?
could we not delay?
could you not delay?
could they not delay? 	could I not be delaying?
could you not be delaying?
could he not be delaying?
could we not be delaying?
could you not be delaying?
could they not be delaying? 	could I not have delayed?
could you not have delayed?
could he not have delayed?
could we not have delayed?
could you not have delayed?
could they not have delayed? 	could I not have been delaying?
could you not have been delaying?
could he not have been delaying?
could we not have been delaying?
could you not have been delaying?
could they not have been delaying?