English verb conjugation MUST HISS

Regular verb: hiss - hissed - hissed

Affirmation

Simple form

I must hiss
you must hiss
he must hiss
we must hiss
you must hiss
they must hiss

V-ing form

I must be hissing
you must be hissing
he must be hissing
we must be hissing
you must be hissing
they must be hissing

Perfect

I must have hissed
you must have hissed
he must have hissed
we must have hissed
you must have hissed
they must have hissed

V-ing perfect

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

Negation

Simple form

I must not hiss
you must not hiss
he must not hiss
we must not hiss
you must not hiss
they must not hiss

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I hiss?
must you hiss?
must he hiss?
must we hiss?
must you hiss?
must they hiss?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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