English verb conjugation MUST SUBSTITUTE

Regular verb: substitute - substituted - substituted

Affirmation

Simple form

I must substitute
you must substitute
he must substitute
we must substitute
you must substitute
they must substitute

V-ing form

I must be substituting
you must be substituting
he must be substituting
we must be substituting
you must be substituting
they must be substituting

Perfect

I must have substituted
you must have substituted
he must have substituted
we must have substituted
you must have substituted
they must have substituted

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I substitute?
must you substitute?
must he substitute?
must we substitute?
must you substitute?
must they substitute?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Page top