Conjugación del verbo inglés
MUST UNFASTEN

Verbo regular: unfasten - unfastened - unfastened

Afirmación

Forma simple	Forma con V-ing
I must unfasten you must unfasten he must unfasten we must unfasten you must unfasten they must unfasten	I must be unfastening you must be unfastening he must be unfastening we must be unfastening you must be unfastening they must be unfastening
Perfecto	Perfecto con V-ing
I must have unfastened you must have unfastened he must have unfastened we must have unfastened you must have unfastened they must have unfastened	I must have been unfastening you must have been unfastening he must have been unfastening we must have been unfastening you must have been unfastening they must have been unfastening

Negación

Forma simple	Forma con V-ing
I mustn't unfasten you mustn't unfasten he mustn't unfasten we mustn't unfasten you mustn't unfasten they mustn't unfasten	I mustn't be unfastening you mustn't be unfastening he mustn't be unfastening we mustn't be unfastening you mustn't be unfastening they mustn't be unfastening
Perfecto	Perfecto con V-ing
I mustn't have unfastened you mustn't have unfastened he mustn't have unfastened we mustn't have unfastened you mustn't have unfastened they mustn't have unfastened	I mustn't have been unfastening you mustn't have been unfastening he mustn't have been unfastening we mustn't have been unfastening you mustn't have been unfastening they mustn't have been unfastening

Forma interrogativa

Forma simple	Forma con V-ing
must I unfasten? must you unfasten? must he unfasten? must we unfasten? must you unfasten? must they unfasten?	must I be unfastening? must you be unfastening? must he be unfastening? must we be unfastening? must you be unfastening? must they be unfastening?
Perfecto	Perfecto con V-ing
must I have unfastened? must you have unfastened? must he have unfastened? must we have unfastened? must you have unfastened? must they have unfastened?	must I have been unfastening? must you have been unfastening? must he have been unfastening? must we have been unfastening? must you have been unfastening? must they have been unfastening?

Forma interro-negativa

Forma simple	Forma con V-ing
mustn't I unfasten? mustn't you unfasten? mustn't he unfasten? mustn't we unfasten? mustn't you unfasten? mustn't they unfasten?	mustn't I be unfastening? mustn't you be unfastening? mustn't he be unfastening? mustn't we be unfastening? mustn't you be unfastening? mustn't they be unfastening?
Perfecto	Perfecto con V-ing
mustn't I have unfastened? mustn't you have unfastened? mustn't he have unfastened? mustn't we have unfastened? mustn't you have unfastened? mustn't they have unfastened?	mustn't I have been unfastening? mustn't you have been unfastening? mustn't he have been unfastening? mustn't we have been unfastening? mustn't you have been unfastening? mustn't they have been unfastening?