I must forget you must forget he must forget we must forget you must forget they must forget
Forma com V-ing
I must be forgetting you must be forgetting he must be forgetting we must be forgetting you must be forgetting they must be forgetting
Perfeito
I must have forgotten you must have forgotten he must have forgotten we must have forgotten you must have forgotten they must have forgotten
Perfeito com V-ing
I must have been forgetting you must have been forgetting he must have been forgetting we must have been forgetting you must have been forgetting they must have been forgetting
Negação
Forma simple
I mustn't forget you mustn't forget he mustn't forget we mustn't forget you mustn't forget they mustn't forget
Forma com V-ing
I mustn't be forgetting you mustn't be forgetting he mustn't be forgetting we mustn't be forgetting you mustn't be forgetting they mustn't be forgetting
Perfeito
I mustn't have forgotten you mustn't have forgotten he mustn't have forgotten we mustn't have forgotten you mustn't have forgotten they mustn't have forgotten
Perfeito com V-ing
I mustn't have been forgetting you mustn't have been forgetting he mustn't have been forgetting we mustn't have been forgetting you mustn't have been forgetting they mustn't have been forgetting
Forma interrogativa
Forma simple
must I forget? must you forget? must he forget? must we forget? must you forget? must they forget?
Forma com V-ing
must I be forgetting? must you be forgetting? must he be forgetting? must we be forgetting? must you be forgetting? must they be forgetting?
Perfeito
must I have forgotten? must you have forgotten? must he have forgotten? must we have forgotten? must you have forgotten? must they have forgotten?
Perfeito com V-ing
must I have been forgetting? must you have been forgetting? must he have been forgetting? must we have been forgetting? must you have been forgetting? must they have been forgetting?
Forma interro-Negação
Forma simple
mustn't I forget? mustn't you forget? mustn't he forget? mustn't we forget? mustn't you forget? mustn't they forget?
Forma com V-ing
mustn't I be forgetting? mustn't you be forgetting? mustn't he be forgetting? mustn't we be forgetting? mustn't you be forgetting? mustn't they be forgetting?
Perfeito
mustn't I have forgotten? mustn't you have forgotten? mustn't he have forgotten? mustn't we have forgotten? mustn't you have forgotten? mustn't they have forgotten?
Perfeito com V-ing
mustn't I have been forgetting? mustn't you have been forgetting? mustn't he have been forgetting? mustn't we have been forgetting? mustn't you have been forgetting? mustn't they have been forgetting?