English verb conjugation COULD SAIL

Regular verb: sail - sailed - sailed

Affirmation

Simple form

I could sail
you could sail
he could sail
we could sail
you could sail
they could sail

V-ing form

I could be sailing
you could be sailing
he could be sailing
we could be sailing
you could be sailing
they could be sailing

Perfect

I could have sailed
you could have sailed
he 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
he could have been sailing
we could have been sailing
you could have been sailing
they could have been sailing

Negation

Simple form

I couldn't sail
you couldn't sail
he couldn't sail
we couldn't sail
you couldn't sail
they couldn't sail

V-ing form

I couldn't be sailing
you couldn't be sailing
he couldn't be sailing
we couldn't be sailing
you couldn't be sailing
they couldn't be sailing

Perfect

I couldn't have sailed
you couldn't have sailed
he couldn't have sailed
we couldn't have sailed
you couldn't have sailed
they couldn't have sailed

V-ing perfect

I couldn't have been sailing
you couldn't have been sailing
he couldn't have been sailing
we couldn't have been sailing
you couldn't have been sailing
they couldn't have been sailing

Interrogative form

Simple form

could I sail?
could you sail?
could he sail?
could we sail?
could you sail?
could they sail?

V-ing form

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

Perfect

could I have sailed?
could you have sailed?
could he 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 he have been sailing?
could we have been sailing?
could you have been sailing?
could they have been sailing?

Interro-negative form

Simple form

couldn't I sail?
couldn't you sail?
couldn't he sail?
couldn't we sail?
couldn't you sail?
couldn't they sail?

V-ing form

couldn't I be sailing?
couldn't you be sailing?
couldn't he be sailing?
couldn't we be sailing?
couldn't you be sailing?
couldn't they be sailing?

Perfect

couldn't I have sailed?
couldn't you have sailed?
couldn't he have sailed?
couldn't we have sailed?
couldn't you have sailed?
couldn't they have sailed?

V-ing perfect

couldn't I have been sailing?
couldn't you have been sailing?
couldn't he have been sailing?
couldn't we have been sailing?
couldn't you have been sailing?
couldn't they have been sailing?

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