Conjugación del verbo inglés
MUST UNDERTAKE

Verbo irregular: undertake - undertook - undertaken

Afirmación

Forma simple	Forma con V-ing
I must undertake you must undertake he must undertake we must undertake you must undertake they must undertake	I must be undertaking you must be undertaking he must be undertaking we must be undertaking you must be undertaking they must be undertaking
Perfecto	Perfecto con V-ing
I must have undertaken you must have undertaken he must have undertaken we must have undertaken you must have undertaken they must have undertaken	I must have been undertaking you must have been undertaking he must have been undertaking we must have been undertaking you must have been undertaking they must have been undertaking

Negación

Forma simple	Forma con V-ing
I must not undertake you must not undertake he must not undertake we must not undertake you must not undertake they must not undertake	I must not be undertaking you must not be undertaking he must not be undertaking we must not be undertaking you must not be undertaking they must not be undertaking
Perfecto	Perfecto con V-ing
I must not have undertaken you must not have undertaken he must not have undertaken we must not have undertaken you must not have undertaken they must not have undertaken	I must not have been undertaking you must not have been undertaking he must not have been undertaking we must not have been undertaking you must not have been undertaking they must not have been undertaking

Forma interrogativa

Forma simple	Forma con V-ing
must I undertake? must you undertake? must he undertake? must we undertake? must you undertake? must they undertake?	must I be undertaking? must you be undertaking? must he be undertaking? must we be undertaking? must you be undertaking? must they be undertaking?
Perfecto	Perfecto con V-ing
must I have undertaken? must you have undertaken? must he have undertaken? must we have undertaken? must you have undertaken? must they have undertaken?	must I have been undertaking? must you have been undertaking? must he have been undertaking? must we have been undertaking? must you have been undertaking? must they have been undertaking?

Forma interro-negativa

Forma simple	Forma con V-ing
must I not undertake? must you not undertake? must he not undertake? must we not undertake? must you not undertake? must they not undertake?	must I not be undertaking? must you not be undertaking? must he not be undertaking? must we not be undertaking? must you not be undertaking? must they not be undertaking?
Perfecto	Perfecto con V-ing
must I not have undertaken? must you not have undertaken? must he not have undertaken? must we not have undertaken? must you not have undertaken? must they not have undertaken?	must I not have been undertaking? must you not have been undertaking? must he not have been undertaking? must we not have been undertaking? must you not have been undertaking? must they not have been undertaking?