English verb conjugation MUST KNOCK

Regular verb: knock - knocked - knocked

Affirmation

Simple form

I must knock
you must knock
he must knock
we must knock
you must knock
they must knock

V-ing form

I must be knocking
you must be knocking
he must be knocking
we must be knocking
you must be knocking
they must be knocking

Perfect

I must have knocked
you must have knocked
he must have knocked
we must have knocked
you must have knocked
they must have knocked

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I knock?
must you knock?
must he knock?
must we knock?
must you knock?
must they knock?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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