I must toil you must toil he must toil we must toil you must toil they must toil
Forma con V-ing
I must be toiling you must be toiling he must be toiling we must be toiling you must be toiling they must be toiling
Perfecto
I must have toiled you must have toiled he must have toiled we must have toiled you must have toiled they must have toiled
Perfecto con V-ing
I must have been toiling you must have been toiling he must have been toiling we must have been toiling you must have been toiling they must have been toiling
Negación
Forma simple
I mustn't toil you mustn't toil he mustn't toil we mustn't toil you mustn't toil they mustn't toil
Forma con V-ing
I mustn't be toiling you mustn't be toiling he mustn't be toiling we mustn't be toiling you mustn't be toiling they mustn't be toiling
Perfecto
I mustn't have toiled you mustn't have toiled he mustn't have toiled we mustn't have toiled you mustn't have toiled they mustn't have toiled
Perfecto con V-ing
I mustn't have been toiling you mustn't have been toiling he mustn't have been toiling we mustn't have been toiling you mustn't have been toiling they mustn't have been toiling
Forma interrogativa
Forma simple
must I toil? must you toil? must he toil? must we toil? must you toil? must they toil?
Forma con V-ing
must I be toiling? must you be toiling? must he be toiling? must we be toiling? must you be toiling? must they be toiling?
Perfecto
must I have toiled? must you have toiled? must he have toiled? must we have toiled? must you have toiled? must they have toiled?
Perfecto con V-ing
must I have been toiling? must you have been toiling? must he have been toiling? must we have been toiling? must you have been toiling? must they have been toiling?
Forma interro-negativa
Forma simple
mustn't I toil? mustn't you toil? mustn't he toil? mustn't we toil? mustn't you toil? mustn't they toil?
Forma con V-ing
mustn't I be toiling? mustn't you be toiling? mustn't he be toiling? mustn't we be toiling? mustn't you be toiling? mustn't they be toiling?
Perfecto
mustn't I have toiled? mustn't you have toiled? mustn't he have toiled? mustn't we have toiled? mustn't you have toiled? mustn't they have toiled?
Perfecto con V-ing
mustn't I have been toiling? mustn't you have been toiling? mustn't he have been toiling? mustn't we have been toiling? mustn't you have been toiling? mustn't they have been toiling?