English verb conjugation COULD IMPROVISE

Regular verb: improvise - improvised - improvised

Affirmation

Simple form

I could improvise
you could improvise
he could improvise
we could improvise
you could improvise
they could improvise

V-ing form

I could be improvising
you could be improvising
he could be improvising
we could be improvising
you could be improvising
they could be improvising

Perfect

I could have improvised
you could have improvised
he could have improvised
we could have improvised
you could have improvised
they could have improvised

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I improvise?
could you improvise?
could he improvise?
could we improvise?
could you improvise?
could they improvise?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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