I must summer you must summer he must summer we must summer you must summer they must summer
Forma com V-ing
I must be summering you must be summering he must be summering we must be summering you must be summering they must be summering
Perfeito
I must have summered you must have summered he 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 he must have been summering we must have been summering you must have been summering they must have been summering
Negação
Forma simple
I must not summer you must not summer he must not summer we must not summer you must not summer they must not summer
Forma com V-ing
I must not be summering you must not be summering he must not be summering we must not be summering you must not be summering they must not be summering
Perfeito
I must not have summered you must not have summered he must not have summered we must not have summered you must not have summered they must not have summered
Perfeito com V-ing
I must not have been summering you must not have been summering he must not have been summering we must not have been summering you must not have been summering they must not have been summering
Forma interrogativa
Forma simple
must I summer? must you summer? must he summer? must we summer? must you summer? must they summer?
Forma com V-ing
must I be summering? must you be summering? must he be summering? must we be summering? must you be summering? must they be summering?
Perfeito
must I have summered? must you have summered? must he 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 he have been summering? must we have been summering? must you have been summering? must they have been summering?
Forma interro-Negação
Forma simple
must I not summer? must you not summer? must he not summer? must we not summer? must you not summer? must they not summer?
Forma com V-ing
must I not be summering? must you not be summering? must he not be summering? must we not be summering? must you not be summering? must they not be summering?
Perfeito
must I not have summered? must you not have summered? must he not have summered? must we not have summered? must you not have summered? must they not have summered?
Perfeito com V-ing
must I not have been summering? must you not have been summering? must he not have been summering? must we not have been summering? must you not have been summering? must they not have been summering?