English verb conjugation COULD TIGHTEN

Regular verb: tighten - tightened - tightened

Affirmation

Simple form

I could tighten
you could tighten
she could tighten
we could tighten
you could tighten
they could tighten

V-ing form

I could be tightening
you could be tightening
she could be tightening
we could be tightening
you could be tightening
they could be tightening

Perfect

I could have tightened
you could have tightened
she could have tightened
we could have tightened
you could have tightened
they could have tightened

V-ing perfect

I could have been tightening
you could have been tightening
she could have been tightening
we could have been tightening
you could have been tightening
they could have been tightening

Negation

Simple form

I could not tighten
you could not tighten
she could not tighten
we could not tighten
you could not tighten
they could not tighten

V-ing form

I could not be tightening
you could not be tightening
she could not be tightening
we could not be tightening
you could not be tightening
they could not be tightening

Perfect

I could not have tightened
you could not have tightened
she could not have tightened
we could not have tightened
you could not have tightened
they could not have tightened

V-ing perfect

I could not have been tightening
you could not have been tightening
she could not have been tightening
we could not have been tightening
you could not have been tightening
they could not have been tightening

Interrogative form

Simple form

could I tighten?
could you tighten?
could she tighten?
could we tighten?
could you tighten?
could they tighten?

V-ing form

could I be tightening?
could you be tightening?
could she be tightening?
could we be tightening?
could you be tightening?
could they be tightening?

Perfect

could I have tightened?
could you have tightened?
could she have tightened?
could we have tightened?
could you have tightened?
could they have tightened?

V-ing perfect

could I have been tightening?
could you have been tightening?
could she have been tightening?
could we have been tightening?
could you have been tightening?
could they have been tightening?

Interro-negative form

Simple form

could I not tighten?
could you not tighten?
could she not tighten?
could we not tighten?
could you not tighten?
could they not tighten?

V-ing form

could I not be tightening?
could you not be tightening?
could she not be tightening?
could we not be tightening?
could you not be tightening?
could they not be tightening?

Perfect

could I not have tightened?
could you not have tightened?
could she not have tightened?
could we not have tightened?
could you not have tightened?
could they not have tightened?

V-ing perfect

could I not have been tightening?
could you not have been tightening?
could she not have been tightening?
could we not have been tightening?
could you not have been tightening?
could they not have been tightening?

Page top