I must go you must go he must go we must go you must go they must go
Forma com V-ing
I must be going you must be going he must be going we must be going you must be going they must be going
Perfeito
I must have gone you must have gone he must have gone we must have gone you must have gone they must have gone
Perfeito com V-ing
I must have been going you must have been going he must have been going we must have been going you must have been going they must have been going
Negação
Forma simple
I mustn't go you mustn't go he mustn't go we mustn't go you mustn't go they mustn't go
Forma com V-ing
I mustn't be going you mustn't be going he mustn't be going we mustn't be going you mustn't be going they mustn't be going
Perfeito
I mustn't have gone you mustn't have gone he mustn't have gone we mustn't have gone you mustn't have gone they mustn't have gone
Perfeito com V-ing
I mustn't have been going you mustn't have been going he mustn't have been going we mustn't have been going you mustn't have been going they mustn't have been going
Forma interrogativa
Forma simple
must I go? must you go? must he go? must we go? must you go? must they go?
Forma com V-ing
must I be going? must you be going? must he be going? must we be going? must you be going? must they be going?
Perfeito
must I have gone? must you have gone? must he have gone? must we have gone? must you have gone? must they have gone?
Perfeito com V-ing
must I have been going? must you have been going? must he have been going? must we have been going? must you have been going? must they have been going?
Forma interro-Negação
Forma simple
mustn't I go? mustn't you go? mustn't he go? mustn't we go? mustn't you go? mustn't they go?
Forma com V-ing
mustn't I be going? mustn't you be going? mustn't he be going? mustn't we be going? mustn't you be going? mustn't they be going?
Perfeito
mustn't I have gone? mustn't you have gone? mustn't he have gone? mustn't we have gone? mustn't you have gone? mustn't they have gone?
Perfeito com V-ing
mustn't I have been going? mustn't you have been going? mustn't he have been going? mustn't we have been going? mustn't you have been going? mustn't they have been going?