English verb conjugation COULD SWIM

Irregular verb: swim - swam - swum

Affirmation

Simple form

I could swim
you could swim
he could swim
we could swim
you could swim
they could swim

V-ing form

I could be swimming
you could be swimming
he could be swimming
we could be swimming
you could be swimming
they could be swimming

Perfect

I could have swum
you could have swum
he could have swum
we could have swum
you could have swum
they could have swum

V-ing perfect

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

Negation

Simple form

I could not swim
you could not swim
he could not swim
we could not swim
you could not swim
they could not swim

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I swim?
could you swim?
could he swim?
could we swim?
could you swim?
could they swim?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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