English verb conjugation MUST INTERVENE

Regular verb: intervene - intervened - intervened


Affirmation

Simple form

I must intervene
you must intervene
he must intervene
we must intervene
you must intervene
they must intervene

V-ing form

I must be intervening
you must be intervening
he must be intervening
we must be intervening
you must be intervening
they must be intervening

Perfect

I must have intervened
you must have intervened
he must have intervened
we must have intervened
you must have intervened
they must have intervened

V-ing perfect

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

Negation

Simple form

I must not intervene
you must not intervene
he must not intervene
we must not intervene
you must not intervene
they must not intervene

V-ing form

I must not be intervening
you must not be intervening
he must not be intervening
we must not be intervening
you must not be intervening
they must not be intervening

Perfect

I must not have intervened
you must not have intervened
he must not have intervened
we must not have intervened
you must not have intervened
they must not have intervened

V-ing perfect

I must not have been intervening
you must not have been intervening
he must not have been intervening
we must not have been intervening
you must not have been intervening
they must not have been intervening

Interrogative form

Simple form

must I intervene?
must you intervene?
must he intervene?
must we intervene?
must you intervene?
must they intervene?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

must I not intervene?
must you not intervene?
must he not intervene?
must we not intervene?
must you not intervene?
must they not intervene?

V-ing form

must I not be intervening?
must you not be intervening?
must he not be intervening?
must we not be intervening?
must you not be intervening?
must they not be intervening?

Perfect

must I not have intervened?
must you not have intervened?
must he not have intervened?
must we not have intervened?
must you not have intervened?
must they not have intervened?

V-ing perfect

must I not have been intervening?
must you not have been intervening?
must he not have been intervening?
must we not have been intervening?
must you not have been intervening?
must they not have been intervening?