English verb conjugation MUST MASTER

Regular verb: master - mastered - mastered

Affirmation

Simple form

I must master
you must master
she must master
we must master
you must master
they must master

V-ing form

I must be mastering
you must be mastering
she must be mastering
we must be mastering
you must be mastering
they must be mastering

Perfect

I must have mastered
you must have mastered
she must have mastered
we must have mastered
you must have mastered
they must have mastered

V-ing perfect

I must have been mastering
you must have been mastering
she must have been mastering
we must have been mastering
you must have been mastering
they must have been mastering

Negation

Simple form

I must not master
you must not master
she must not master
we must not master
you must not master
they must not master

V-ing form

I must not be mastering
you must not be mastering
she must not be mastering
we must not be mastering
you must not be mastering
they must not be mastering

Perfect

I must not have mastered
you must not have mastered
she must not have mastered
we must not have mastered
you must not have mastered
they must not have mastered

V-ing perfect

I must not have been mastering
you must not have been mastering
she must not have been mastering
we must not have been mastering
you must not have been mastering
they must not have been mastering

Interrogative form

Simple form

must I master?
must you master?
must she master?
must we master?
must you master?
must they master?

V-ing form

must I be mastering?
must you be mastering?
must she be mastering?
must we be mastering?
must you be mastering?
must they be mastering?

Perfect

must I have mastered?
must you have mastered?
must she have mastered?
must we have mastered?
must you have mastered?
must they have mastered?

V-ing perfect

must I have been mastering?
must you have been mastering?
must she have been mastering?
must we have been mastering?
must you have been mastering?
must they have been mastering?

Interro-negative form

Simple form

must I not master?
must you not master?
must she not master?
must we not master?
must you not master?
must they not master?

V-ing form

must I not be mastering?
must you not be mastering?
must she not be mastering?
must we not be mastering?
must you not be mastering?
must they not be mastering?

Perfect

must I not have mastered?
must you not have mastered?
must she not have mastered?
must we not have mastered?
must you not have mastered?
must they not have mastered?

V-ing perfect

must I not have been mastering?
must you not have been mastering?
must she not have been mastering?
must we not have been mastering?
must you not have been mastering?
must they not have been mastering?

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