I must chat you must chat he must chat we must chat you must chat they must chat
Forma com V-ing
I must be chatting you must be chatting he must be chatting we must be chatting you must be chatting they must be chatting
Perfeito
I must have chatted you must have chatted he must have chatted we must have chatted you must have chatted they must have chatted
Perfeito com V-ing
I must have been chatting you must have been chatting he must have been chatting we must have been chatting you must have been chatting they must have been chatting
Negação
Forma simple
I mustn't chat you mustn't chat he mustn't chat we mustn't chat you mustn't chat they mustn't chat
Forma com V-ing
I mustn't be chatting you mustn't be chatting he mustn't be chatting we mustn't be chatting you mustn't be chatting they mustn't be chatting
Perfeito
I mustn't have chatted you mustn't have chatted he mustn't have chatted we mustn't have chatted you mustn't have chatted they mustn't have chatted
Perfeito com V-ing
I mustn't have been chatting you mustn't have been chatting he mustn't have been chatting we mustn't have been chatting you mustn't have been chatting they mustn't have been chatting
Forma interrogativa
Forma simple
must I chat? must you chat? must he chat? must we chat? must you chat? must they chat?
Forma com V-ing
must I be chatting? must you be chatting? must he be chatting? must we be chatting? must you be chatting? must they be chatting?
Perfeito
must I have chatted? must you have chatted? must he have chatted? must we have chatted? must you have chatted? must they have chatted?
Perfeito com V-ing
must I have been chatting? must you have been chatting? must he have been chatting? must we have been chatting? must you have been chatting? must they have been chatting?
Forma interro-Negação
Forma simple
mustn't I chat? mustn't you chat? mustn't he chat? mustn't we chat? mustn't you chat? mustn't they chat?
Forma com V-ing
mustn't I be chatting? mustn't you be chatting? mustn't he be chatting? mustn't we be chatting? mustn't you be chatting? mustn't they be chatting?
Perfeito
mustn't I have chatted? mustn't you have chatted? mustn't he have chatted? mustn't we have chatted? mustn't you have chatted? mustn't they have chatted?
Perfeito com V-ing
mustn't I have been chatting? mustn't you have been chatting? mustn't he have been chatting? mustn't we have been chatting? mustn't you have been chatting? mustn't they have been chatting?