I must frolic you must frolic she must frolic we must frolic you must frolic they must frolic
Forma com V-ing
I must be frolicing you must be frolicing she must be frolicing we must be frolicing you must be frolicing they must be frolicing
Perfeito
I must have froliced you must have froliced she must have froliced we must have froliced you must have froliced they must have froliced
Perfeito com V-ing
I must have been frolicing you must have been frolicing she must have been frolicing we must have been frolicing you must have been frolicing they must have been frolicing
Negação
Forma simple
I mustn't frolic you mustn't frolic she mustn't frolic we mustn't frolic you mustn't frolic they mustn't frolic
Forma com V-ing
I mustn't be frolicing you mustn't be frolicing she mustn't be frolicing we mustn't be frolicing you mustn't be frolicing they mustn't be frolicing
Perfeito
I mustn't have froliced you mustn't have froliced she mustn't have froliced we mustn't have froliced you mustn't have froliced they mustn't have froliced
Perfeito com V-ing
I mustn't have been frolicing you mustn't have been frolicing she mustn't have been frolicing we mustn't have been frolicing you mustn't have been frolicing they mustn't have been frolicing
Forma interrogativa
Forma simple
must I frolic? must you frolic? must she frolic? must we frolic? must you frolic? must they frolic?
Forma com V-ing
must I be frolicing? must you be frolicing? must she be frolicing? must we be frolicing? must you be frolicing? must they be frolicing?
Perfeito
must I have froliced? must you have froliced? must she have froliced? must we have froliced? must you have froliced? must they have froliced?
Perfeito com V-ing
must I have been frolicing? must you have been frolicing? must she have been frolicing? must we have been frolicing? must you have been frolicing? must they have been frolicing?
Forma interro-Negação
Forma simple
mustn't I frolic? mustn't you frolic? mustn't she frolic? mustn't we frolic? mustn't you frolic? mustn't they frolic?
Forma com V-ing
mustn't I be frolicing? mustn't you be frolicing? mustn't she be frolicing? mustn't we be frolicing? mustn't you be frolicing? mustn't they be frolicing?
Perfeito
mustn't I have froliced? mustn't you have froliced? mustn't she have froliced? mustn't we have froliced? mustn't you have froliced? mustn't they have froliced?
Perfeito com V-ing
mustn't I have been frolicing? mustn't you have been frolicing? mustn't she have been frolicing? mustn't we have been frolicing? mustn't you have been frolicing? mustn't they have been frolicing?