English verb conjugation MUST SERVE

Regular verb: serve - served - served

Affirmation

Simple form

I must serve
you must serve
she must serve
we must serve
you must serve
they must serve

V-ing form

I must be serving
you must be serving
she must be serving
we must be serving
you must be serving
they must be serving

Perfect

I must have served
you must have served
she must have served
we must have served
you must have served
they must have served

V-ing perfect

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

Negation

Simple form

I mustn't serve
you mustn't serve
she mustn't serve
we mustn't serve
you mustn't serve
they mustn't serve

V-ing form

I mustn't be serving
you mustn't be serving
she mustn't be serving
we mustn't be serving
you mustn't be serving
they mustn't be serving

Perfect

I mustn't have served
you mustn't have served
she mustn't have served
we mustn't have served
you mustn't have served
they mustn't have served

V-ing perfect

I mustn't have been serving
you mustn't have been serving
she mustn't have been serving
we mustn't have been serving
you mustn't have been serving
they mustn't have been serving

Interrogative form

Simple form

must I serve?
must you serve?
must she serve?
must we serve?
must you serve?
must they serve?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

mustn't I serve?
mustn't you serve?
mustn't she serve?
mustn't we serve?
mustn't you serve?
mustn't they serve?

V-ing form

mustn't I be serving?
mustn't you be serving?
mustn't she be serving?
mustn't we be serving?
mustn't you be serving?
mustn't they be serving?

Perfect

mustn't I have served?
mustn't you have served?
mustn't she have served?
mustn't we have served?
mustn't you have served?
mustn't they have served?

V-ing perfect

mustn't I have been serving?
mustn't you have been serving?
mustn't she have been serving?
mustn't we have been serving?
mustn't you have been serving?
mustn't they have been serving?

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