I must summer you must summer she must summer we must summer you must summer they must summer
Forma com V-ing
I must be summering you must be summering she must be summering we must be summering you must be summering they must be summering
Perfeito
I must have summered you must have summered she must have summered we must have summered you must have summered they must have summered
Perfeito com V-ing
I must have been summering you must have been summering she must have been summering we must have been summering you must have been summering they must have been summering
Negação
Forma simple
I mustn't summer you mustn't summer she mustn't summer we mustn't summer you mustn't summer they mustn't summer
Forma com V-ing
I mustn't be summering you mustn't be summering she mustn't be summering we mustn't be summering you mustn't be summering they mustn't be summering
Perfeito
I mustn't have summered you mustn't have summered she mustn't have summered we mustn't have summered you mustn't have summered they mustn't have summered
Perfeito com V-ing
I mustn't have been summering you mustn't have been summering she mustn't have been summering we mustn't have been summering you mustn't have been summering they mustn't have been summering
Forma interrogativa
Forma simple
must I summer? must you summer? must she summer? must we summer? must you summer? must they summer?
Forma com V-ing
must I be summering? must you be summering? must she be summering? must we be summering? must you be summering? must they be summering?
Perfeito
must I have summered? must you have summered? must she have summered? must we have summered? must you have summered? must they have summered?
Perfeito com V-ing
must I have been summering? must you have been summering? must she have been summering? must we have been summering? must you have been summering? must they have been summering?
Forma interro-Negação
Forma simple
mustn't I summer? mustn't you summer? mustn't she summer? mustn't we summer? mustn't you summer? mustn't they summer?
Forma com V-ing
mustn't I be summering? mustn't you be summering? mustn't she be summering? mustn't we be summering? mustn't you be summering? mustn't they be summering?
Perfeito
mustn't I have summered? mustn't you have summered? mustn't she have summered? mustn't we have summered? mustn't you have summered? mustn't they have summered?
Perfeito com V-ing
mustn't I have been summering? mustn't you have been summering? mustn't she have been summering? mustn't we have been summering? mustn't you have been summering? mustn't they have been summering?