English verb conjugation MUST MASTER

Regular verb: master - mastered - mastered

Affirmation

Simple form

I must master
you must master
he must master
we must master
you must master
they must master

V-ing form

I must be mastering
you must be mastering
he must be mastering
we must be mastering
you must be mastering
they must be mastering

Perfect

I must have mastered
you must have mastered
he 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
he must have been mastering
we must have been mastering
you must have been mastering
they must have been mastering

Negation

Simple form

I mustn't master
you mustn't master
he mustn't master
we mustn't master
you mustn't master
they mustn't master

V-ing form

I mustn't be mastering
you mustn't be mastering
he mustn't be mastering
we mustn't be mastering
you mustn't be mastering
they mustn't be mastering

Perfect

I mustn't have mastered
you mustn't have mastered
he mustn't have mastered
we mustn't have mastered
you mustn't have mastered
they mustn't have mastered

V-ing perfect

I mustn't have been mastering
you mustn't have been mastering
he mustn't have been mastering
we mustn't have been mastering
you mustn't have been mastering
they mustn't have been mastering

Interrogative form

Simple form

must I master?
must you master?
must he master?
must we master?
must you master?
must they master?

V-ing form

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

Perfect

must I have mastered?
must you have mastered?
must he 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 he have been mastering?
must we have been mastering?
must you have been mastering?
must they have been mastering?

Interro-negative form

Simple form

mustn't I master?
mustn't you master?
mustn't he master?
mustn't we master?
mustn't you master?
mustn't they master?

V-ing form

mustn't I be mastering?
mustn't you be mastering?
mustn't he be mastering?
mustn't we be mastering?
mustn't you be mastering?
mustn't they be mastering?

Perfect

mustn't I have mastered?
mustn't you have mastered?
mustn't he have mastered?
mustn't we have mastered?
mustn't you have mastered?
mustn't they have mastered?

V-ing perfect

mustn't I have been mastering?
mustn't you have been mastering?
mustn't he have been mastering?
mustn't we have been mastering?
mustn't you have been mastering?
mustn't they have been mastering?

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