I must fold you must fold she must fold we must fold you must fold they must fold
Forma com V-ing
I must be folding you must be folding she must be folding we must be folding you must be folding they must be folding
Perfeito
I must have folded you must have folded she 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 she 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 she 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 she 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 she 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 she 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 she fold? must we fold? must you fold? must they fold?
Forma com V-ing
must I be folding? must you be folding? must she be folding? must we be folding? must you be folding? must they be folding?
Perfeito
must I have folded? must you have folded? must she 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 she 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 she 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 she 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 she 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 she have been folding? mustn't we have been folding? mustn't you have been folding? mustn't they have been folding?