I must scratch you must scratch he must scratch we must scratch you must scratch they must scratch
Forma com V-ing
I must be scratching you must be scratching he must be scratching we must be scratching you must be scratching they must be scratching
Perfeito
I must have scratched you must have scratched he must have scratched we must have scratched you must have scratched they must have scratched
Perfeito com V-ing
I must have been scratching you must have been scratching he must have been scratching we must have been scratching you must have been scratching they must have been scratching
Negação
Forma simple
I mustn't scratch you mustn't scratch he mustn't scratch we mustn't scratch you mustn't scratch they mustn't scratch
Forma com V-ing
I mustn't be scratching you mustn't be scratching he mustn't be scratching we mustn't be scratching you mustn't be scratching they mustn't be scratching
Perfeito
I mustn't have scratched you mustn't have scratched he mustn't have scratched we mustn't have scratched you mustn't have scratched they mustn't have scratched
Perfeito com V-ing
I mustn't have been scratching you mustn't have been scratching he mustn't have been scratching we mustn't have been scratching you mustn't have been scratching they mustn't have been scratching
Forma interrogativa
Forma simple
must I scratch? must you scratch? must he scratch? must we scratch? must you scratch? must they scratch?
Forma com V-ing
must I be scratching? must you be scratching? must he be scratching? must we be scratching? must you be scratching? must they be scratching?
Perfeito
must I have scratched? must you have scratched? must he have scratched? must we have scratched? must you have scratched? must they have scratched?
Perfeito com V-ing
must I have been scratching? must you have been scratching? must he have been scratching? must we have been scratching? must you have been scratching? must they have been scratching?
Forma interro-Negação
Forma simple
mustn't I scratch? mustn't you scratch? mustn't he scratch? mustn't we scratch? mustn't you scratch? mustn't they scratch?
Forma com V-ing
mustn't I be scratching? mustn't you be scratching? mustn't he be scratching? mustn't we be scratching? mustn't you be scratching? mustn't they be scratching?
Perfeito
mustn't I have scratched? mustn't you have scratched? mustn't he have scratched? mustn't we have scratched? mustn't you have scratched? mustn't they have scratched?
Perfeito com V-ing
mustn't I have been scratching? mustn't you have been scratching? mustn't he have been scratching? mustn't we have been scratching? mustn't you have been scratching? mustn't they have been scratching?