English verb conjugation COULD HISS

Regular verb: hiss - hissed - hissed

Affirmation

Simple form

I could hiss
you could hiss
he could hiss
we could hiss
you could hiss
they could hiss

V-ing form

I could be hissing
you could be hissing
he could be hissing
we could be hissing
you could be hissing
they could be hissing

Perfect

I could have hissed
you could have hissed
he could have hissed
we could have hissed
you could have hissed
they could have hissed

V-ing perfect

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

Negation

Simple form

I could not hiss
you could not hiss
he could not hiss
we could not hiss
you could not hiss
they could not hiss

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I hiss?
could you hiss?
could he hiss?
could we hiss?
could you hiss?
could they hiss?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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