Conjugación del verbo inglés
MUST DO

Verbo irregular: do - did - done

Afirmación

Forma simple	Forma con V-ing
I must do you must do he must do we must do you must do they must do	I must be doing you must be doing he must be doing we must be doing you must be doing they must be doing
Perfecto	Perfecto con V-ing
I must have done you must have done he must have done we must have done you must have done they must have done	I must have been doing you must have been doing he must have been doing we must have been doing you must have been doing they must have been doing

Negación

Forma simple	Forma con V-ing
I mustn't do you mustn't do he mustn't do we mustn't do you mustn't do they mustn't do	I mustn't be doing you mustn't be doing he mustn't be doing we mustn't be doing you mustn't be doing they mustn't be doing
Perfecto	Perfecto con V-ing
I mustn't have done you mustn't have done he mustn't have done we mustn't have done you mustn't have done they mustn't have done	I mustn't have been doing you mustn't have been doing he mustn't have been doing we mustn't have been doing you mustn't have been doing they mustn't have been doing

Forma interrogativa

Forma simple	Forma con V-ing
must I do? must you do? must he do? must we do? must you do? must they do?	must I be doing? must you be doing? must he be doing? must we be doing? must you be doing? must they be doing?
Perfecto	Perfecto con V-ing
must I have done? must you have done? must he have done? must we have done? must you have done? must they have done?	must I have been doing? must you have been doing? must he have been doing? must we have been doing? must you have been doing? must they have been doing?

Forma interro-negativa

Forma simple	Forma con V-ing
mustn't I do? mustn't you do? mustn't he do? mustn't we do? mustn't you do? mustn't they do?	mustn't I be doing? mustn't you be doing? mustn't he be doing? mustn't we be doing? mustn't you be doing? mustn't they be doing?
Perfecto	Perfecto con V-ing
mustn't I have done? mustn't you have done? mustn't he have done? mustn't we have done? mustn't you have done? mustn't they have done?	mustn't I have been doing? mustn't you have been doing? mustn't he have been doing? mustn't we have been doing? mustn't you have been doing? mustn't they have been doing?