English verb conjugation COULD WATER-SKI

Regular verb: water-ski - water-skied - water-skied

Affirmation

Simple form

I could water-ski
you could water-ski
he could water-ski
we could water-ski
you could water-ski
they could water-ski

V-ing form

I could be water-skiing
you could be water-skiing
he could be water-skiing
we could be water-skiing
you could be water-skiing
they could be water-skiing

Perfect

I could have water-skied
you could have water-skied
he could have water-skied
we could have water-skied
you could have water-skied
they could have water-skied

V-ing perfect

I could have been water-skiing
you could have been water-skiing
he could have been water-skiing
we could have been water-skiing
you could have been water-skiing
they could have been water-skiing

Negation

Simple form

I could not water-ski
you could not water-ski
he could not water-ski
we could not water-ski
you could not water-ski
they could not water-ski

V-ing form

I could not be water-skiing
you could not be water-skiing
he could not be water-skiing
we could not be water-skiing
you could not be water-skiing
they could not be water-skiing

Perfect

I could not have water-skied
you could not have water-skied
he could not have water-skied
we could not have water-skied
you could not have water-skied
they could not have water-skied

V-ing perfect

I could not have been water-skiing
you could not have been water-skiing
he could not have been water-skiing
we could not have been water-skiing
you could not have been water-skiing
they could not have been water-skiing

Interrogative form

Simple form

could I water-ski?
could you water-ski?
could he water-ski?
could we water-ski?
could you water-ski?
could they water-ski?

V-ing form

could I be water-skiing?
could you be water-skiing?
could he be water-skiing?
could we be water-skiing?
could you be water-skiing?
could they be water-skiing?

Perfect

could I have water-skied?
could you have water-skied?
could he have water-skied?
could we have water-skied?
could you have water-skied?
could they have water-skied?

V-ing perfect

could I have been water-skiing?
could you have been water-skiing?
could he have been water-skiing?
could we have been water-skiing?
could you have been water-skiing?
could they have been water-skiing?

Interro-negative form

Simple form

could I not water-ski?
could you not water-ski?
could he not water-ski?
could we not water-ski?
could you not water-ski?
could they not water-ski?

V-ing form

could I not be water-skiing?
could you not be water-skiing?
could he not be water-skiing?
could we not be water-skiing?
could you not be water-skiing?
could they not be water-skiing?

Perfect

could I not have water-skied?
could you not have water-skied?
could he not have water-skied?
could we not have water-skied?
could you not have water-skied?
could they not have water-skied?

V-ing perfect

could I not have been water-skiing?
could you not have been water-skiing?
could he not have been water-skiing?
could we not have been water-skiing?
could you not have been water-skiing?
could they not have been water-skiing?

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