male gender | Modal : no | may | might | can | could | shall | should | will | would | must | ought to
English verb conjugation COULD STAY
Regular verb: stay - stayed - stayed
Affirmation
Simple form
I could stayyou could stay
she could stay
we could stay
you could stay
they could stay
V-ing form
I could be stayingyou could be staying
she could be staying
we could be staying
you could be staying
they could be staying
Perfect
I could have stayedyou could have stayed
she could have stayed
we could have stayed
you could have stayed
they could have stayed
V-ing perfect
I could have been stayingyou could have been staying
she could have been staying
we could have been staying
you could have been staying
they could have been staying
Negation
Simple form
I couldn't stayyou couldn't stay
she couldn't stay
we couldn't stay
you couldn't stay
they couldn't stay
V-ing form
I couldn't be stayingyou couldn't be staying
she couldn't be staying
we couldn't be staying
you couldn't be staying
they couldn't be staying
Perfect
I couldn't have stayedyou couldn't have stayed
she couldn't have stayed
we couldn't have stayed
you couldn't have stayed
they couldn't have stayed
V-ing perfect
I couldn't have been stayingyou couldn't have been staying
she couldn't have been staying
we couldn't have been staying
you couldn't have been staying
they couldn't have been staying
Interrogative form
Simple form
could I stay?could you stay?
could she stay?
could we stay?
could you stay?
could they stay?
V-ing form
could I be staying?could you be staying?
could she be staying?
could we be staying?
could you be staying?
could they be staying?
Perfect
could I have stayed?could you have stayed?
could she have stayed?
could we have stayed?
could you have stayed?
could they have stayed?
V-ing perfect
could I have been staying?could you have been staying?
could she have been staying?
could we have been staying?
could you have been staying?
could they have been staying?
Interro-negative form
Simple form
couldn't I stay?couldn't you stay?
couldn't she stay?
couldn't we stay?
couldn't you stay?
couldn't they stay?
V-ing form
couldn't I be staying?couldn't you be staying?
couldn't she be staying?
couldn't we be staying?
couldn't you be staying?
couldn't they be staying?
Perfect
couldn't I have stayed?couldn't you have stayed?
couldn't she have stayed?
couldn't we have stayed?
couldn't you have stayed?
couldn't they have stayed?
V-ing perfect
couldn't I have been staying?couldn't you have been staying?
couldn't she have been staying?
couldn't we have been staying?
couldn't you have been staying?
couldn't they have been staying?