English verb conjugation MUST MARK

Regular verb: mark - marked - marked

Affirmation

Simple form

I must mark
you must mark
he must mark
we must mark
you must mark
they must mark

V-ing form

I must be marking
you must be marking
he must be marking
we must be marking
you must be marking
they must be marking

Perfect

I must have marked
you must have marked
he must have marked
we must have marked
you must have marked
they must have marked

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I mark?
must you mark?
must he mark?
must we mark?
must you mark?
must they mark?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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