English verb conjugation MUST SING

Irregular verb: sing - sang - sung

Affirmation

Simple form

I must sing
you must sing
he must sing
we must sing
you must sing
they must sing

V-ing form

I must be singing
you must be singing
he must be singing
we must be singing
you must be singing
they must be singing

Perfect

I must have sung
you must have sung
he must have sung
we must have sung
you must have sung
they must have sung

V-ing perfect

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

Negation

Simple form

I must not sing
you must not sing
he must not sing
we must not sing
you must not sing
they must not sing

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I sing?
must you sing?
must he sing?
must we sing?
must you sing?
must they sing?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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