Conjugación del verbo inglés
COULD SAIL

Verbo regular: sail - sailed - sailed

Afirmación

Forma simple	Forma con V-ing
I could sail you could sail he could sail we could sail you could sail they could sail	I could be sailing you could be sailing he could be sailing we could be sailing you could be sailing they could be sailing
Perfecto	Perfecto con V-ing
I could have sailed you could have sailed he could have sailed we could have sailed you could have sailed they could have sailed	I could have been sailing you could have been sailing he could have been sailing we could have been sailing you could have been sailing they could have been sailing

Negación

Forma simple	Forma con V-ing
I could not sail you could not sail he could not sail we could not sail you could not sail they could not sail	I could not be sailing you could not be sailing he could not be sailing we could not be sailing you could not be sailing they could not be sailing
Perfecto	Perfecto con V-ing
I could not have sailed you could not have sailed he could not have sailed we could not have sailed you could not have sailed they could not have sailed	I could not have been sailing you could not have been sailing he could not have been sailing we could not have been sailing you could not have been sailing they could not have been sailing

Forma interrogativa

Forma simple	Forma con V-ing
could I sail? could you sail? could he sail? could we sail? could you sail? could they sail?	could I be sailing? could you be sailing? could he be sailing? could we be sailing? could you be sailing? could they be sailing?
Perfecto	Perfecto con V-ing
could I have sailed? could you have sailed? could he have sailed? could we have sailed? could you have sailed? could they have sailed?	could I have been sailing? could you have been sailing? could he have been sailing? could we have been sailing? could you have been sailing? could they have been sailing?

Forma interro-negativa

Forma simple	Forma con V-ing
could I not sail? could you not sail? could he not sail? could we not sail? could you not sail? could they not sail?	could I not be sailing? could you not be sailing? could he not be sailing? could we not be sailing? could you not be sailing? could they not be sailing?
Perfecto	Perfecto con V-ing
could I not have sailed? could you not have sailed? could he not have sailed? could we not have sailed? could you not have sailed? could they not have sailed?	could I not have been sailing? could you not have been sailing? could he not have been sailing? could we not have been sailing? could you not have been sailing? could they not have been sailing?