Conjugación del verbo inglés
MUST KNOW

Verbo irregular: know - knew - known

Afirmación

Forma simple	Forma con V-ing
I must know you must know she must know we must know you must know they must know	I must be knowing you must be knowing she must be knowing we must be knowing you must be knowing they must be knowing
Perfecto	Perfecto con V-ing
I must have known you must have known she must have known we must have known you must have known they must have known	I must have been knowing you must have been knowing she must have been knowing we must have been knowing you must have been knowing they must have been knowing

Negación

Forma simple	Forma con V-ing
I must not know you must not know she must not know we must not know you must not know they must not know	I must not be knowing you must not be knowing she must not be knowing we must not be knowing you must not be knowing they must not be knowing
Perfecto	Perfecto con V-ing
I must not have known you must not have known she must not have known we must not have known you must not have known they must not have known	I must not have been knowing you must not have been knowing she must not have been knowing we must not have been knowing you must not have been knowing they must not have been knowing

Forma interrogativa

Forma simple	Forma con V-ing
must I know? must you know? must she know? must we know? must you know? must they know?	must I be knowing? must you be knowing? must she be knowing? must we be knowing? must you be knowing? must they be knowing?
Perfecto	Perfecto con V-ing
must I have known? must you have known? must she have known? must we have known? must you have known? must they have known?	must I have been knowing? must you have been knowing? must she have been knowing? must we have been knowing? must you have been knowing? must they have been knowing?

Forma interro-negativa

Forma simple	Forma con V-ing
must I not know? must you not know? must she not know? must we not know? must you not know? must they not know?	must I not be knowing? must you not be knowing? must she not be knowing? must we not be knowing? must you not be knowing? must they not be knowing?
Perfecto	Perfecto con V-ing
must I not have known? must you not have known? must she not have known? must we not have known? must you not have known? must they not have known?	must I not have been knowing? must you not have been knowing? must she not have been knowing? must we not have been knowing? must you not have been knowing? must they not have been knowing?