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 mustn't undertake you mustn't undertake he mustn't undertake we mustn't undertake you mustn't undertake they mustn't undertake	I mustn't be undertaking you mustn't be undertaking he mustn't be undertaking we mustn't be undertaking you mustn't be undertaking they mustn't be undertaking
Perfecto	Perfecto con V-ing
I mustn't have undertaken you mustn't have undertaken he mustn't have undertaken we mustn't have undertaken you mustn't have undertaken they mustn't have undertaken	I mustn't have been undertaking you mustn't have been undertaking he mustn't have been undertaking we mustn't have been undertaking you mustn't have been undertaking they mustn't 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
mustn't I undertake? mustn't you undertake? mustn't he undertake? mustn't we undertake? mustn't you undertake? mustn't they undertake?	mustn't I be undertaking? mustn't you be undertaking? mustn't he be undertaking? mustn't we be undertaking? mustn't you be undertaking? mustn't they be undertaking?
Perfecto	Perfecto con V-ing
mustn't I have undertaken? mustn't you have undertaken? mustn't he have undertaken? mustn't we have undertaken? mustn't you have undertaken? mustn't they have undertaken?	mustn't I have been undertaking? mustn't you have been undertaking? mustn't he have been undertaking? mustn't we have been undertaking? mustn't you have been undertaking? mustn't they have been undertaking?