Conjugación del verbo inglés
MUST REFRAIN

Verbo regular: refrain - refrained - refrained

Afirmación

Forma simple	Forma con V-ing
I must refrain you must refrain he must refrain we must refrain you must refrain they must refrain	I must be refraining you must be refraining he must be refraining we must be refraining you must be refraining they must be refraining
Perfecto	Perfecto con V-ing
I must have refrained you must have refrained he must have refrained we must have refrained you must have refrained they must have refrained	I must have been refraining you must have been refraining he must have been refraining we must have been refraining you must have been refraining they must have been refraining

Negación

Forma simple	Forma con V-ing
I mustn't refrain you mustn't refrain he mustn't refrain we mustn't refrain you mustn't refrain they mustn't refrain	I mustn't be refraining you mustn't be refraining he mustn't be refraining we mustn't be refraining you mustn't be refraining they mustn't be refraining
Perfecto	Perfecto con V-ing
I mustn't have refrained you mustn't have refrained he mustn't have refrained we mustn't have refrained you mustn't have refrained they mustn't have refrained	I mustn't have been refraining you mustn't have been refraining he mustn't have been refraining we mustn't have been refraining you mustn't have been refraining they mustn't have been refraining

Forma interrogativa

Forma simple	Forma con V-ing
must I refrain? must you refrain? must he refrain? must we refrain? must you refrain? must they refrain?	must I be refraining? must you be refraining? must he be refraining? must we be refraining? must you be refraining? must they be refraining?
Perfecto	Perfecto con V-ing
must I have refrained? must you have refrained? must he have refrained? must we have refrained? must you have refrained? must they have refrained?	must I have been refraining? must you have been refraining? must he have been refraining? must we have been refraining? must you have been refraining? must they have been refraining?

Forma interro-negativa

Forma simple	Forma con V-ing
mustn't I refrain? mustn't you refrain? mustn't he refrain? mustn't we refrain? mustn't you refrain? mustn't they refrain?	mustn't I be refraining? mustn't you be refraining? mustn't he be refraining? mustn't we be refraining? mustn't you be refraining? mustn't they be refraining?
Perfecto	Perfecto con V-ing
mustn't I have refrained? mustn't you have refrained? mustn't he have refrained? mustn't we have refrained? mustn't you have refrained? mustn't they have refrained?	mustn't I have been refraining? mustn't you have been refraining? mustn't he have been refraining? mustn't we have been refraining? mustn't you have been refraining? mustn't they have been refraining?