English verb conjugation MUST THREATEN

Regular verb: threaten - threatened - threatened

Affirmation

Simple form

I must threaten
you must threaten
he must threaten
we must threaten
you must threaten
they must threaten

V-ing form

I must be threatening
you must be threatening
he must be threatening
we must be threatening
you must be threatening
they must be threatening

Perfect

I must have threatened
you must have threatened
he must have threatened
we must have threatened
you must have threatened
they must have threatened

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I threaten?
must you threaten?
must he threaten?
must we threaten?
must you threaten?
must they threaten?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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