I must screen you must screen she must screen we must screen you must screen they must screen
Forma com V-ing
I must be screening you must be screening she must be screening we must be screening you must be screening they must be screening
Perfeito
I must have screened you must have screened she must have screened we must have screened you must have screened they must have screened
Perfeito com V-ing
I must have been screening you must have been screening she must have been screening we must have been screening you must have been screening they must have been screening
Negação
Forma simple
I mustn't screen you mustn't screen she mustn't screen we mustn't screen you mustn't screen they mustn't screen
Forma com V-ing
I mustn't be screening you mustn't be screening she mustn't be screening we mustn't be screening you mustn't be screening they mustn't be screening
Perfeito
I mustn't have screened you mustn't have screened she mustn't have screened we mustn't have screened you mustn't have screened they mustn't have screened
Perfeito com V-ing
I mustn't have been screening you mustn't have been screening she mustn't have been screening we mustn't have been screening you mustn't have been screening they mustn't have been screening
Forma interrogativa
Forma simple
must I screen? must you screen? must she screen? must we screen? must you screen? must they screen?
Forma com V-ing
must I be screening? must you be screening? must she be screening? must we be screening? must you be screening? must they be screening?
Perfeito
must I have screened? must you have screened? must she have screened? must we have screened? must you have screened? must they have screened?
Perfeito com V-ing
must I have been screening? must you have been screening? must she have been screening? must we have been screening? must you have been screening? must they have been screening?
Forma interro-Negação
Forma simple
mustn't I screen? mustn't you screen? mustn't she screen? mustn't we screen? mustn't you screen? mustn't they screen?
Forma com V-ing
mustn't I be screening? mustn't you be screening? mustn't she be screening? mustn't we be screening? mustn't you be screening? mustn't they be screening?
Perfeito
mustn't I have screened? mustn't you have screened? mustn't she have screened? mustn't we have screened? mustn't you have screened? mustn't they have screened?
Perfeito com V-ing
mustn't I have been screening? mustn't you have been screening? mustn't she have been screening? mustn't we have been screening? mustn't you have been screening? mustn't they have been screening?