English verb conjugation COULD INVENT

Regular verb: invent - invented - invented


Affirmation

Simple form

I could invent
you could invent
he could invent
we could invent
you could invent
they could invent

V-ing form

I could be inventing
you could be inventing
he could be inventing
we could be inventing
you could be inventing
they could be inventing

Perfect

I could have invented
you could have invented
he could have invented
we could have invented
you could have invented
they could have invented

V-ing perfect

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

Negation

Simple form

I could not invent
you could not invent
he could not invent
we could not invent
you could not invent
they could not invent

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I invent?
could you invent?
could he invent?
could we invent?
could you invent?
could they invent?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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