English verb conjugation COULD SKI

Regular verb: ski - skied - skied


Affirmation

Simple form

I could ski
you could ski
he could ski
we could ski
you could ski
they could ski

V-ing form

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

Perfect

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

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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