English verb conjugation OUGHT TO KNOW

Irregular verb: know - knew - known

Affirmation

Simple form

I ought to know
you ought to know
he ought to know
we ought to know
you ought to know
they ought to know

V-ing form

I ought to be knowing
you ought to be knowing
he ought to be knowing
we ought to be knowing
you ought to be knowing
they ought to be knowing

Perfect

I ought to have known
you ought to have known
he ought to have known
we ought to have known
you ought to have known
they ought to have known

V-ing perfect

I ought to have been knowing
you ought to have been knowing
he ought to have been knowing
we ought to have been knowing
you ought to have been knowing
they ought to have been knowing

Negation

Simple form

I oughtn't to know
you oughtn't to know
he oughtn't to know
we oughtn't to know
you oughtn't to know
they oughtn't to know

V-ing form

I oughtn't to be knowing
you oughtn't to be knowing
he oughtn't to be knowing
we oughtn't to be knowing
you oughtn't to be knowing
they oughtn't to be knowing

Perfect

I oughtn't to have known
you oughtn't to have known
he oughtn't to have known
we oughtn't to have known
you oughtn't to have known
they oughtn't to have known

V-ing perfect

I oughtn't to have been knowing
you oughtn't to have been knowing
he oughtn't to have been knowing
we oughtn't to have been knowing
you oughtn't to have been knowing
they oughtn't to have been knowing

Interrogative form

Simple form

ought to I know?
ought to you know?
ought to he know?
ought to we know?
ought to you know?
ought to they know?

V-ing form

ought to I be knowing?
ought to you be knowing?
ought to he be knowing?
ought to we be knowing?
ought to you be knowing?
ought to they be knowing?

Perfect

ought to I have known?
ought to you have known?
ought to he have known?
ought to we have known?
ought to you have known?
ought to they have known?

V-ing perfect

ought to I have been knowing?
ought to you have been knowing?
ought to he have been knowing?
ought to we have been knowing?
ought to you have been knowing?
ought to they have been knowing?

Interro-negative form

Simple form

oughtn't I to know?
oughtn't you to know?
oughtn't he to know?
oughtn't we to know?
oughtn't you to know?
oughtn't they to know?

V-ing form

oughtn't I to be knowing?
oughtn't you to be knowing?
oughtn't he to be knowing?
oughtn't we to be knowing?
oughtn't you to be knowing?
oughtn't they to be knowing?

Perfect

oughtn't I to have known?
oughtn't you to have known?
oughtn't he to have known?
oughtn't we to have known?
oughtn't you to have known?
oughtn't they to have known?

V-ing perfect

oughtn't I to have been knowing?
oughtn't you to have been knowing?
oughtn't he to have been knowing?
oughtn't we to have been knowing?
oughtn't you to have been knowing?
oughtn't they to have been knowing?

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