Cuidado, este verbo pode não existir, a conjugação é dada como exemplo.
Afirmação
Forma simple
I must fiance you must fiance she must fiance we must fiance you must fiance they must fiance
Forma com V-ing
I must be fiancing you must be fiancing she must be fiancing we must be fiancing you must be fiancing they must be fiancing
Perfeito
I must have fianced you must have fianced she must have fianced we must have fianced you must have fianced they must have fianced
Perfeito com V-ing
I must have been fiancing you must have been fiancing she must have been fiancing we must have been fiancing you must have been fiancing they must have been fiancing
Negação
Forma simple
I mustn't fiance you mustn't fiance she mustn't fiance we mustn't fiance you mustn't fiance they mustn't fiance
Forma com V-ing
I mustn't be fiancing you mustn't be fiancing she mustn't be fiancing we mustn't be fiancing you mustn't be fiancing they mustn't be fiancing
Perfeito
I mustn't have fianced you mustn't have fianced she mustn't have fianced we mustn't have fianced you mustn't have fianced they mustn't have fianced
Perfeito com V-ing
I mustn't have been fiancing you mustn't have been fiancing she mustn't have been fiancing we mustn't have been fiancing you mustn't have been fiancing they mustn't have been fiancing
Forma interrogativa
Forma simple
must I fiance? must you fiance? must she fiance? must we fiance? must you fiance? must they fiance?
Forma com V-ing
must I be fiancing? must you be fiancing? must she be fiancing? must we be fiancing? must you be fiancing? must they be fiancing?
Perfeito
must I have fianced? must you have fianced? must she have fianced? must we have fianced? must you have fianced? must they have fianced?
Perfeito com V-ing
must I have been fiancing? must you have been fiancing? must she have been fiancing? must we have been fiancing? must you have been fiancing? must they have been fiancing?
Forma interro-Negação
Forma simple
mustn't I fiance? mustn't you fiance? mustn't she fiance? mustn't we fiance? mustn't you fiance? mustn't they fiance?
Forma com V-ing
mustn't I be fiancing? mustn't you be fiancing? mustn't she be fiancing? mustn't we be fiancing? mustn't you be fiancing? mustn't they be fiancing?
Perfeito
mustn't I have fianced? mustn't you have fianced? mustn't she have fianced? mustn't we have fianced? mustn't you have fianced? mustn't they have fianced?
Perfeito com V-ing
mustn't I have been fiancing? mustn't you have been fiancing? mustn't she have been fiancing? mustn't we have been fiancing? mustn't you have been fiancing? mustn't they have been fiancing?