Conjugación del verbo inglés
MUST SERVE

Verbo regular: serve - served - served

Afirmación

Forma simple	Forma con V-ing
I must serve you must serve he must serve we must serve you must serve they must serve	I must be serving you must be serving he must be serving we must be serving you must be serving they must be serving
Perfecto	Perfecto con V-ing
I must have served you must have served he must have served we must have served you must have served they must have served	I must have been serving you must have been serving he must have been serving we must have been serving you must have been serving they must have been serving

Negación

Forma simple	Forma con V-ing
I mustn't serve you mustn't serve he mustn't serve we mustn't serve you mustn't serve they mustn't serve	I mustn't be serving you mustn't be serving he mustn't be serving we mustn't be serving you mustn't be serving they mustn't be serving
Perfecto	Perfecto con V-ing
I mustn't have served you mustn't have served he mustn't have served we mustn't have served you mustn't have served they mustn't have served	I mustn't have been serving you mustn't have been serving he mustn't have been serving we mustn't have been serving you mustn't have been serving they mustn't have been serving

Forma interrogativa

Forma simple	Forma con V-ing
must I serve? must you serve? must he serve? must we serve? must you serve? must they serve?	must I be serving? must you be serving? must he be serving? must we be serving? must you be serving? must they be serving?
Perfecto	Perfecto con V-ing
must I have served? must you have served? must he have served? must we have served? must you have served? must they have served?	must I have been serving? must you have been serving? must he have been serving? must we have been serving? must you have been serving? must they have been serving?

Forma interro-negativa

Forma simple	Forma con V-ing
mustn't I serve? mustn't you serve? mustn't he serve? mustn't we serve? mustn't you serve? mustn't they serve?	mustn't I be serving? mustn't you be serving? mustn't he be serving? mustn't we be serving? mustn't you be serving? mustn't they be serving?
Perfecto	Perfecto con V-ing
mustn't I have served? mustn't you have served? mustn't he have served? mustn't we have served? mustn't you have served? mustn't they have served?	mustn't I have been serving? mustn't you have been serving? mustn't he have been serving? mustn't we have been serving? mustn't you have been serving? mustn't they have been serving?