English verb conjugation MUST UNSCREW

Regular verb: unscrew - unscrewed - unscrewed

Affirmation

Simple form

I must unscrew
you must unscrew
he must unscrew
we must unscrew
you must unscrew
they must unscrew

V-ing form

I must be unscrewing
you must be unscrewing
he must be unscrewing
we must be unscrewing
you must be unscrewing
they must be unscrewing

Perfect

I must have unscrewed
you must have unscrewed
he must have unscrewed
we must have unscrewed
you must have unscrewed
they must have unscrewed

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I unscrew?
must you unscrew?
must he unscrew?
must we unscrew?
must you unscrew?
must they unscrew?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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