I must fray you must fray she must fray we must fray you must fray they must fray
Forma con V-ing
I must be fraying you must be fraying she must be fraying we must be fraying you must be fraying they must be fraying
Perfecto
I must have frayed you must have frayed she must have frayed we must have frayed you must have frayed they must have frayed
Perfecto con V-ing
I must have been fraying you must have been fraying she must have been fraying we must have been fraying you must have been fraying they must have been fraying
Negación
Forma simple
I mustn't fray you mustn't fray she mustn't fray we mustn't fray you mustn't fray they mustn't fray
Forma con V-ing
I mustn't be fraying you mustn't be fraying she mustn't be fraying we mustn't be fraying you mustn't be fraying they mustn't be fraying
Perfecto
I mustn't have frayed you mustn't have frayed she mustn't have frayed we mustn't have frayed you mustn't have frayed they mustn't have frayed
Perfecto con V-ing
I mustn't have been fraying you mustn't have been fraying she mustn't have been fraying we mustn't have been fraying you mustn't have been fraying they mustn't have been fraying
Forma interrogativa
Forma simple
must I fray? must you fray? must she fray? must we fray? must you fray? must they fray?
Forma con V-ing
must I be fraying? must you be fraying? must she be fraying? must we be fraying? must you be fraying? must they be fraying?
Perfecto
must I have frayed? must you have frayed? must she have frayed? must we have frayed? must you have frayed? must they have frayed?
Perfecto con V-ing
must I have been fraying? must you have been fraying? must she have been fraying? must we have been fraying? must you have been fraying? must they have been fraying?
Forma interro-negativa
Forma simple
mustn't I fray? mustn't you fray? mustn't she fray? mustn't we fray? mustn't you fray? mustn't they fray?
Forma con V-ing
mustn't I be fraying? mustn't you be fraying? mustn't she be fraying? mustn't we be fraying? mustn't you be fraying? mustn't they be fraying?
Perfecto
mustn't I have frayed? mustn't you have frayed? mustn't she have frayed? mustn't we have frayed? mustn't you have frayed? mustn't they have frayed?
Perfecto con V-ing
mustn't I have been fraying? mustn't you have been fraying? mustn't she have been fraying? mustn't we have been fraying? mustn't you have been fraying? mustn't they have been fraying?