English verb conjugation MUST FIGHT

Irregular verb: fight - fought - fought

Affirmation

Simple form

I must fight
you must fight
she must fight
we must fight
you must fight
they must fight

V-ing form

I must be fighting
you must be fighting
she must be fighting
we must be fighting
you must be fighting
they must be fighting

Perfect

I must have fought
you must have fought
she must have fought
we must have fought
you must have fought
they must have fought

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I fight?
must you fight?
must she fight?
must we fight?
must you fight?
must they fight?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Page top