English verb conjugation COULD KEEP

Irregular verb: keep - kept - kept


Affirmation

Simple form

I could keep
you could keep
he could keep
we could keep
you could keep
they could keep

V-ing form

I could be keeping
you could be keeping
he could be keeping
we could be keeping
you could be keeping
they could be keeping

Perfect

I could have kept
you could have kept
he could have kept
we could have kept
you could have kept
they could have kept

V-ing perfect

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

Negation

Simple form

I could not keep
you could not keep
he could not keep
we could not keep
you could not keep
they could not keep

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I keep?
could you keep?
could he keep?
could we keep?
could you keep?
could they keep?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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