English verb conjugation MUST FIRE

Regular verb: fire - fired - fired

Affirmation

Simple form

I must fire
you must fire
he must fire
we must fire
you must fire
they must fire

V-ing form

I must be firing
you must be firing
he must be firing
we must be firing
you must be firing
they must be firing

Perfect

I must have fired
you must have fired
he must have fired
we must have fired
you must have fired
they must have fired

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I fire?
must you fire?
must he fire?
must we fire?
must you fire?
must they fire?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Page top