English verb conjugation MUST UNDRESS

Regular verb: undress - undressed - undressed

Affirmation

Simple form

I must undress
you must undress
he must undress
we must undress
you must undress
they must undress

V-ing form

I must be undressing
you must be undressing
he must be undressing
we must be undressing
you must be undressing
they must be undressing

Perfect

I must have undressed
you must have undressed
he must have undressed
we must have undressed
you must have undressed
they must have undressed

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I undress?
must you undress?
must he undress?
must we undress?
must you undress?
must they undress?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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