English verb conjugation MUST FURTHER

Regular verb: further - furthered - furthered

Affirmation

Simple form

I must further
you must further
he must further
we must further
you must further
they must further

V-ing form

I must be furthering
you must be furthering
he must be furthering
we must be furthering
you must be furthering
they must be furthering

Perfect

I must have furthered
you must have furthered
he must have furthered
we must have furthered
you must have furthered
they must have furthered

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I further?
must you further?
must he further?
must we further?
must you further?
must they further?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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