I must install you must install he must install we must install you must install they must install
Forma com V-ing
I must be installing you must be installing he must be installing we must be installing you must be installing they must be installing
Perfeito
I must have installed you must have installed he must have installed we must have installed you must have installed they must have installed
Perfeito com V-ing
I must have been installing you must have been installing he must have been installing we must have been installing you must have been installing they must have been installing
Negação
Forma simple
I mustn't install you mustn't install he mustn't install we mustn't install you mustn't install they mustn't install
Forma com V-ing
I mustn't be installing you mustn't be installing he mustn't be installing we mustn't be installing you mustn't be installing they mustn't be installing
Perfeito
I mustn't have installed you mustn't have installed he mustn't have installed we mustn't have installed you mustn't have installed they mustn't have installed
Perfeito com V-ing
I mustn't have been installing you mustn't have been installing he mustn't have been installing we mustn't have been installing you mustn't have been installing they mustn't have been installing
Forma interrogativa
Forma simple
must I install? must you install? must he install? must we install? must you install? must they install?
Forma com V-ing
must I be installing? must you be installing? must he be installing? must we be installing? must you be installing? must they be installing?
Perfeito
must I have installed? must you have installed? must he have installed? must we have installed? must you have installed? must they have installed?
Perfeito com V-ing
must I have been installing? must you have been installing? must he have been installing? must we have been installing? must you have been installing? must they have been installing?
Forma interro-Negação
Forma simple
mustn't I install? mustn't you install? mustn't he install? mustn't we install? mustn't you install? mustn't they install?
Forma com V-ing
mustn't I be installing? mustn't you be installing? mustn't he be installing? mustn't we be installing? mustn't you be installing? mustn't they be installing?
Perfeito
mustn't I have installed? mustn't you have installed? mustn't he have installed? mustn't we have installed? mustn't you have installed? mustn't they have installed?
Perfeito com V-ing
mustn't I have been installing? mustn't you have been installing? mustn't he have been installing? mustn't we have been installing? mustn't you have been installing? mustn't they have been installing?