English verb conjugation COULD QUAVER

Regular verb: quaver - quavered - quavered

Affirmation

Simple form

I could quaver
you could quaver
he could quaver
we could quaver
you could quaver
they could quaver

V-ing form

I could be quavering
you could be quavering
he could be quavering
we could be quavering
you could be quavering
they could be quavering

Perfect

I could have quavered
you could have quavered
he could have quavered
we could have quavered
you could have quavered
they could have quavered

V-ing perfect

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

Negation

Simple form

I couldn't quaver
you couldn't quaver
he couldn't quaver
we couldn't quaver
you couldn't quaver
they couldn't quaver

V-ing form

I couldn't be quavering
you couldn't be quavering
he couldn't be quavering
we couldn't be quavering
you couldn't be quavering
they couldn't be quavering

Perfect

I couldn't have quavered
you couldn't have quavered
he couldn't have quavered
we couldn't have quavered
you couldn't have quavered
they couldn't have quavered

V-ing perfect

I couldn't have been quavering
you couldn't have been quavering
he couldn't have been quavering
we couldn't have been quavering
you couldn't have been quavering
they couldn't have been quavering

Interrogative form

Simple form

could I quaver?
could you quaver?
could he quaver?
could we quaver?
could you quaver?
could they quaver?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

couldn't I quaver?
couldn't you quaver?
couldn't he quaver?
couldn't we quaver?
couldn't you quaver?
couldn't they quaver?

V-ing form

couldn't I be quavering?
couldn't you be quavering?
couldn't he be quavering?
couldn't we be quavering?
couldn't you be quavering?
couldn't they be quavering?

Perfect

couldn't I have quavered?
couldn't you have quavered?
couldn't he have quavered?
couldn't we have quavered?
couldn't you have quavered?
couldn't they have quavered?

V-ing perfect

couldn't I have been quavering?
couldn't you have been quavering?
couldn't he have been quavering?
couldn't we have been quavering?
couldn't you have been quavering?
couldn't they have been quavering?

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