English verb conjugation MUST CAUSE

Regular verb: cause - caused - caused

Affirmation

Simple form

I must cause
you must cause
he must cause
we must cause
you must cause
they must cause

V-ing form

I must be causing
you must be causing
he must be causing
we must be causing
you must be causing
they must be causing

Perfect

I must have caused
you must have caused
he must have caused
we must have caused
you must have caused
they must have caused

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I cause?
must you cause?
must he cause?
must we cause?
must you cause?
must they cause?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Page top