I must maintain you must maintain he must maintain we must maintain you must maintain they must maintain
Forma com V-ing
I must be maintaining you must be maintaining he must be maintaining we must be maintaining you must be maintaining they must be maintaining
Perfeito
I must have maintained you must have maintained he must have maintained we must have maintained you must have maintained they must have maintained
Perfeito com V-ing
I must have been maintaining you must have been maintaining he must have been maintaining we must have been maintaining you must have been maintaining they must have been maintaining
Negação
Forma simple
I mustn't maintain you mustn't maintain he mustn't maintain we mustn't maintain you mustn't maintain they mustn't maintain
Forma com V-ing
I mustn't be maintaining you mustn't be maintaining he mustn't be maintaining we mustn't be maintaining you mustn't be maintaining they mustn't be maintaining
Perfeito
I mustn't have maintained you mustn't have maintained he mustn't have maintained we mustn't have maintained you mustn't have maintained they mustn't have maintained
Perfeito com V-ing
I mustn't have been maintaining you mustn't have been maintaining he mustn't have been maintaining we mustn't have been maintaining you mustn't have been maintaining they mustn't have been maintaining
Forma interrogativa
Forma simple
must I maintain? must you maintain? must he maintain? must we maintain? must you maintain? must they maintain?
Forma com V-ing
must I be maintaining? must you be maintaining? must he be maintaining? must we be maintaining? must you be maintaining? must they be maintaining?
Perfeito
must I have maintained? must you have maintained? must he have maintained? must we have maintained? must you have maintained? must they have maintained?
Perfeito com V-ing
must I have been maintaining? must you have been maintaining? must he have been maintaining? must we have been maintaining? must you have been maintaining? must they have been maintaining?
Forma interro-Negação
Forma simple
mustn't I maintain? mustn't you maintain? mustn't he maintain? mustn't we maintain? mustn't you maintain? mustn't they maintain?
Forma com V-ing
mustn't I be maintaining? mustn't you be maintaining? mustn't he be maintaining? mustn't we be maintaining? mustn't you be maintaining? mustn't they be maintaining?
Perfeito
mustn't I have maintained? mustn't you have maintained? mustn't he have maintained? mustn't we have maintained? mustn't you have maintained? mustn't they have maintained?
Perfeito com V-ing
mustn't I have been maintaining? mustn't you have been maintaining? mustn't he have been maintaining? mustn't we have been maintaining? mustn't you have been maintaining? mustn't they have been maintaining?