I must sleep you must sleep she must sleep we must sleep you must sleep they must sleep
Forma com V-ing
I must be sleeping you must be sleeping she must be sleeping we must be sleeping you must be sleeping they must be sleeping
Perfeito
I must have slept you must have slept she must have slept we must have slept you must have slept they must have slept
Perfeito com V-ing
I must have been sleeping you must have been sleeping she must have been sleeping we must have been sleeping you must have been sleeping they must have been sleeping
Negação
Forma simple
I mustn't sleep you mustn't sleep she mustn't sleep we mustn't sleep you mustn't sleep they mustn't sleep
Forma com V-ing
I mustn't be sleeping you mustn't be sleeping she mustn't be sleeping we mustn't be sleeping you mustn't be sleeping they mustn't be sleeping
Perfeito
I mustn't have slept you mustn't have slept she mustn't have slept we mustn't have slept you mustn't have slept they mustn't have slept
Perfeito com V-ing
I mustn't have been sleeping you mustn't have been sleeping she mustn't have been sleeping we mustn't have been sleeping you mustn't have been sleeping they mustn't have been sleeping
Forma interrogativa
Forma simple
must I sleep? must you sleep? must she sleep? must we sleep? must you sleep? must they sleep?
Forma com V-ing
must I be sleeping? must you be sleeping? must she be sleeping? must we be sleeping? must you be sleeping? must they be sleeping?
Perfeito
must I have slept? must you have slept? must she have slept? must we have slept? must you have slept? must they have slept?
Perfeito com V-ing
must I have been sleeping? must you have been sleeping? must she have been sleeping? must we have been sleeping? must you have been sleeping? must they have been sleeping?
Forma interro-Negação
Forma simple
mustn't I sleep? mustn't you sleep? mustn't she sleep? mustn't we sleep? mustn't you sleep? mustn't they sleep?
Forma com V-ing
mustn't I be sleeping? mustn't you be sleeping? mustn't she be sleeping? mustn't we be sleeping? mustn't you be sleeping? mustn't they be sleeping?
Perfeito
mustn't I have slept? mustn't you have slept? mustn't she have slept? mustn't we have slept? mustn't you have slept? mustn't they have slept?
Perfeito com V-ing
mustn't I have been sleeping? mustn't you have been sleeping? mustn't she have been sleeping? mustn't we have been sleeping? mustn't you have been sleeping? mustn't they have been sleeping?