English verb conjugation MUST USE

Regular verb: use - used - used

Affirmation

Simple form

I must use
you must use
she must use
we must use
you must use
they must use

V-ing form

I must be using
you must be using
she must be using
we must be using
you must be using
they must be using

Perfect

I must have used
you must have used
she must have used
we must have used
you must have used
they must have used

V-ing perfect

I must have been using
you must have been using
she must have been using
we must have been using
you must have been using
they must have been using

Negation

Simple form

I mustn't use
you mustn't use
she mustn't use
we mustn't use
you mustn't use
they mustn't use

V-ing form

I mustn't be using
you mustn't be using
she mustn't be using
we mustn't be using
you mustn't be using
they mustn't be using

Perfect

I mustn't have used
you mustn't have used
she mustn't have used
we mustn't have used
you mustn't have used
they mustn't have used

V-ing perfect

I mustn't have been using
you mustn't have been using
she mustn't have been using
we mustn't have been using
you mustn't have been using
they mustn't have been using

Interrogative form

Simple form

must I use?
must you use?
must she use?
must we use?
must you use?
must they use?

V-ing form

must I be using?
must you be using?
must she be using?
must we be using?
must you be using?
must they be using?

Perfect

must I have used?
must you have used?
must she have used?
must we have used?
must you have used?
must they have used?

V-ing perfect

must I have been using?
must you have been using?
must she have been using?
must we have been using?
must you have been using?
must they have been using?

Interro-negative form

Simple form

mustn't I use?
mustn't you use?
mustn't she use?
mustn't we use?
mustn't you use?
mustn't they use?

V-ing form

mustn't I be using?
mustn't you be using?
mustn't she be using?
mustn't we be using?
mustn't you be using?
mustn't they be using?

Perfect

mustn't I have used?
mustn't you have used?
mustn't she have used?
mustn't we have used?
mustn't you have used?
mustn't they have used?

V-ing perfect

mustn't I have been using?
mustn't you have been using?
mustn't she have been using?
mustn't we have been using?
mustn't you have been using?
mustn't they have been using?

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