English verb conjugation MUST FORDO

Irregular verb: fordo - fordid - fordone

Affirmation

Simple form

I must fordo
you must fordo
he must fordo
we must fordo
you must fordo
they must fordo

V-ing form

I must be fordoing
you must be fordoing
he must be fordoing
we must be fordoing
you must be fordoing
they must be fordoing

Perfect

I must have fordone
you must have fordone
he must have fordone
we must have fordone
you must have fordone
they must have fordone

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I fordo?
must you fordo?
must he fordo?
must we fordo?
must you fordo?
must they fordo?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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