English verb conjugation CAN KNOW

Irregular verb: know - knew - known


Affirmation

Simple form

I can know
you can know
he can know
we can know
you can know
they can know

V-ing form

I can be knowing
you can be knowing
he can be knowing
we can be knowing
you can be knowing
they can be knowing

Perfect

I can have known
you can have known
he can have known
we can have known
you can have known
they can have known

V-ing perfect

I can have been knowing
you can have been knowing
he can have been knowing
we can have been knowing
you can have been knowing
they can have been knowing

Negation

Simple form

I cannot know
you cannot know
he cannot know
we cannot know
you cannot know
they cannot know

V-ing form

I cannot be knowing
you cannot be knowing
he cannot be knowing
we cannot be knowing
you cannot be knowing
they cannot be knowing

Perfect

I cannot have known
you cannot have known
he cannot have known
we cannot have known
you cannot have known
they cannot have known

V-ing perfect

I cannot have been knowing
you cannot have been knowing
he cannot have been knowing
we cannot have been knowing
you cannot have been knowing
they cannot have been knowing

Interrogative form

Simple form

can I know?
can you know?
can he know?
can we know?
can you know?
can they know?

V-ing form

can I be knowing?
can you be knowing?
can he be knowing?
can we be knowing?
can you be knowing?
can they be knowing?

Perfect

can I have known?
can you have known?
can he have known?
can we have known?
can you have known?
can they have known?

V-ing perfect

can I have been knowing?
can you have been knowing?
can he have been knowing?
can we have been knowing?
can you have been knowing?
can they have been knowing?

Interro-negative form

Simple form

can I not know?
can you not know?
can he not know?
can we not know?
can you not know?
can they not know?

V-ing form

can I not be knowing?
can you not be knowing?
can he not be knowing?
can we not be knowing?
can you not be knowing?
can they not be knowing?

Perfect

can I not have known?
can you not have known?
can he not have known?
can we not have known?
can you not have known?
can they not have known?

V-ing perfect

can I not have been knowing?
can you not have been knowing?
can he not have been knowing?
can we not have been knowing?
can you not have been knowing?
can they not have been knowing?