English verb conjugation MUST PREVENT

Regular verb: prevent - prevented - prevented

Affirmation

Simple form

I must prevent
you must prevent
he must prevent
we must prevent
you must prevent
they must prevent

V-ing form

I must be preventing
you must be preventing
he must be preventing
we must be preventing
you must be preventing
they must be preventing

Perfect

I must have prevented
you must have prevented
he must have prevented
we must have prevented
you must have prevented
they must have prevented

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I prevent?
must you prevent?
must he prevent?
must we prevent?
must you prevent?
must they prevent?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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