English verb conjugation COULD SAIL

Regular verb: sail - sailed - sailed

Affirmation

Simple form

I could sail
you could sail
she could sail
we could sail
you could sail
they could sail

V-ing form

I could be sailing
you could be sailing
she could be sailing
we could be sailing
you could be sailing
they could be sailing

Perfect

I could have sailed
you could have sailed
she could have sailed
we could have sailed
you could have sailed
they could have sailed

V-ing perfect

I could have been sailing
you could have been sailing
she could have been sailing
we could have been sailing
you could have been sailing
they could have been sailing

Negation

Simple form

I could not sail
you could not sail
she could not sail
we could not sail
you could not sail
they could not sail

V-ing form

I could not be sailing
you could not be sailing
she could not be sailing
we could not be sailing
you could not be sailing
they could not be sailing

Perfect

I could not have sailed
you could not have sailed
she could not have sailed
we could not have sailed
you could not have sailed
they could not have sailed

V-ing perfect

I could not have been sailing
you could not have been sailing
she could not have been sailing
we could not have been sailing
you could not have been sailing
they could not have been sailing

Interrogative form

Simple form

could I sail?
could you sail?
could she sail?
could we sail?
could you sail?
could they sail?

V-ing form

could I be sailing?
could you be sailing?
could she be sailing?
could we be sailing?
could you be sailing?
could they be sailing?

Perfect

could I have sailed?
could you have sailed?
could she have sailed?
could we have sailed?
could you have sailed?
could they have sailed?

V-ing perfect

could I have been sailing?
could you have been sailing?
could she have been sailing?
could we have been sailing?
could you have been sailing?
could they have been sailing?

Interro-negative form

Simple form

could I not sail?
could you not sail?
could she not sail?
could we not sail?
could you not sail?
could they not sail?

V-ing form

could I not be sailing?
could you not be sailing?
could she not be sailing?
could we not be sailing?
could you not be sailing?
could they not be sailing?

Perfect

could I not have sailed?
could you not have sailed?
could she not have sailed?
could we not have sailed?
could you not have sailed?
could they not have sailed?

V-ing perfect

could I not have been sailing?
could you not have been sailing?
could she not have been sailing?
could we not have been sailing?
could you not have been sailing?
could they not have been sailing?

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