I must fold you must fold he must fold we must fold you must fold they must fold
Forma com V-ing
I must be folding you must be folding he must be folding we must be folding you must be folding they must be folding
Perfeito
I must have folded you must have folded he must have folded we must have folded you must have folded they must have folded
Perfeito com V-ing
I must have been folding you must have been folding he must have been folding we must have been folding you must have been folding they must have been folding
Negação
Forma simple
I mustn't fold you mustn't fold he mustn't fold we mustn't fold you mustn't fold they mustn't fold
Forma com V-ing
I mustn't be folding you mustn't be folding he mustn't be folding we mustn't be folding you mustn't be folding they mustn't be folding
Perfeito
I mustn't have folded you mustn't have folded he mustn't have folded we mustn't have folded you mustn't have folded they mustn't have folded
Perfeito com V-ing
I mustn't have been folding you mustn't have been folding he mustn't have been folding we mustn't have been folding you mustn't have been folding they mustn't have been folding
Forma interrogativa
Forma simple
must I fold? must you fold? must he fold? must we fold? must you fold? must they fold?
Forma com V-ing
must I be folding? must you be folding? must he be folding? must we be folding? must you be folding? must they be folding?
Perfeito
must I have folded? must you have folded? must he have folded? must we have folded? must you have folded? must they have folded?
Perfeito com V-ing
must I have been folding? must you have been folding? must he have been folding? must we have been folding? must you have been folding? must they have been folding?
Forma interro-Negação
Forma simple
mustn't I fold? mustn't you fold? mustn't he fold? mustn't we fold? mustn't you fold? mustn't they fold?
Forma com V-ing
mustn't I be folding? mustn't you be folding? mustn't he be folding? mustn't we be folding? mustn't you be folding? mustn't they be folding?
Perfeito
mustn't I have folded? mustn't you have folded? mustn't he have folded? mustn't we have folded? mustn't you have folded? mustn't they have folded?
Perfeito com V-ing
mustn't I have been folding? mustn't you have been folding? mustn't he have been folding? mustn't we have been folding? mustn't you have been folding? mustn't they have been folding?