could parasail
Verbo regular: parasail - parasailed- parasailed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could parasail
you could parasail
he could parasail
we could parasail
you could parasail
they could parasail 	I could be parasailing
you could be parasailing
he could be parasailing
we could be parasailing
you could be parasailing
they could be parasailing	I could have parasailed
you could have parasailed
he could have parasailed
we could have parasailed
you could have parasailed
they could have parasailed	I could have been parasailing
you could have been parasailing
he could have been parasailing
we could have been parasailing
you could have been parasailing
they could have been parasailing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not parasail
you could not parasail
he could not parasail
we could not parasail
you could not parasail
they could not parasail 	I could not be parasailing
you could not be parasailing
he could not be parasailing
we could not be parasailing
you could not be parasailing
they could not be parasailing	I could not have parasailed
you could not have parasailed
he could not have parasailed
we could not have parasailed
you could not have parasailed
they could not have parasailed	I could not have been parasailing
you could not have been parasailing
he could not have been parasailing
we could not have been parasailing
you could not have been parasailing
they could not have been parasailing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I parasail?
could you parasail?
could he parasail?
could we parasail?
could you parasail?
could they parasail? 	could I be parasailing?
could you be parasailing?
could he be parasailing?
could we be parasailing?
could you be parasailing?
could they be parasailing? 	could I have parasailed?
could you have parasailed?
could he have parasailed?
could we have parasailed?
could you have parasailed?
could they have parasailed? 	could I have been parasailing?
could you have been parasailing?
could he have been parasailing?
could we have been parasailing?
could you have been parasailing?
could they have been parasailing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not parasail?
could you not parasail?
could he not parasail?
could we not parasail?
could you not parasail?
could they not parasail? 	could I not be parasailing?
could you not be parasailing?
could he not be parasailing?
could we not be parasailing?
could you not be parasailing?
could they not be parasailing? 	could I not have parasailed?
could you not have parasailed?
could he not have parasailed?
could we not have parasailed?
could you not have parasailed?
could they not have parasailed? 	could I not have been parasailing?
could you not have been parasailing?
could he not have been parasailing?
could we not have been parasailing?
could you not have been parasailing?
could they not have been parasailing?