I must while you must while she must while we must while you must while they must while
Forma com V-ing
I must be whiling you must be whiling she must be whiling we must be whiling you must be whiling they must be whiling
Perfeito
I must have whiled you must have whiled she must have whiled we must have whiled you must have whiled they must have whiled
Perfeito com V-ing
I must have been whiling you must have been whiling she must have been whiling we must have been whiling you must have been whiling they must have been whiling
Negação
Forma simple
I mustn't while you mustn't while she mustn't while we mustn't while you mustn't while they mustn't while
Forma com V-ing
I mustn't be whiling you mustn't be whiling she mustn't be whiling we mustn't be whiling you mustn't be whiling they mustn't be whiling
Perfeito
I mustn't have whiled you mustn't have whiled she mustn't have whiled we mustn't have whiled you mustn't have whiled they mustn't have whiled
Perfeito com V-ing
I mustn't have been whiling you mustn't have been whiling she mustn't have been whiling we mustn't have been whiling you mustn't have been whiling they mustn't have been whiling
Forma interrogativa
Forma simple
must I while? must you while? must she while? must we while? must you while? must they while?
Forma com V-ing
must I be whiling? must you be whiling? must she be whiling? must we be whiling? must you be whiling? must they be whiling?
Perfeito
must I have whiled? must you have whiled? must she have whiled? must we have whiled? must you have whiled? must they have whiled?
Perfeito com V-ing
must I have been whiling? must you have been whiling? must she have been whiling? must we have been whiling? must you have been whiling? must they have been whiling?
Forma interro-Negação
Forma simple
mustn't I while? mustn't you while? mustn't she while? mustn't we while? mustn't you while? mustn't they while?
Forma com V-ing
mustn't I be whiling? mustn't you be whiling? mustn't she be whiling? mustn't we be whiling? mustn't you be whiling? mustn't they be whiling?
Perfeito
mustn't I have whiled? mustn't you have whiled? mustn't she have whiled? mustn't we have whiled? mustn't you have whiled? mustn't they have whiled?
Perfeito com V-ing
mustn't I have been whiling? mustn't you have been whiling? mustn't she have been whiling? mustn't we have been whiling? mustn't you have been whiling? mustn't they have been whiling?