I must prolong you must prolong she must prolong we must prolong you must prolong they must prolong
Forma com V-ing
I must be prolonging you must be prolonging she must be prolonging we must be prolonging you must be prolonging they must be prolonging
Perfeito
I must have prolonged you must have prolonged she must have prolonged we must have prolonged you must have prolonged they must have prolonged
Perfeito com V-ing
I must have been prolonging you must have been prolonging she must have been prolonging we must have been prolonging you must have been prolonging they must have been prolonging
Negação
Forma simple
I mustn't prolong you mustn't prolong she mustn't prolong we mustn't prolong you mustn't prolong they mustn't prolong
Forma com V-ing
I mustn't be prolonging you mustn't be prolonging she mustn't be prolonging we mustn't be prolonging you mustn't be prolonging they mustn't be prolonging
Perfeito
I mustn't have prolonged you mustn't have prolonged she mustn't have prolonged we mustn't have prolonged you mustn't have prolonged they mustn't have prolonged
Perfeito com V-ing
I mustn't have been prolonging you mustn't have been prolonging she mustn't have been prolonging we mustn't have been prolonging you mustn't have been prolonging they mustn't have been prolonging
Forma interrogativa
Forma simple
must I prolong? must you prolong? must she prolong? must we prolong? must you prolong? must they prolong?
Forma com V-ing
must I be prolonging? must you be prolonging? must she be prolonging? must we be prolonging? must you be prolonging? must they be prolonging?
Perfeito
must I have prolonged? must you have prolonged? must she have prolonged? must we have prolonged? must you have prolonged? must they have prolonged?
Perfeito com V-ing
must I have been prolonging? must you have been prolonging? must she have been prolonging? must we have been prolonging? must you have been prolonging? must they have been prolonging?
Forma interro-Negação
Forma simple
mustn't I prolong? mustn't you prolong? mustn't she prolong? mustn't we prolong? mustn't you prolong? mustn't they prolong?
Forma com V-ing
mustn't I be prolonging? mustn't you be prolonging? mustn't she be prolonging? mustn't we be prolonging? mustn't you be prolonging? mustn't they be prolonging?
Perfeito
mustn't I have prolonged? mustn't you have prolonged? mustn't she have prolonged? mustn't we have prolonged? mustn't you have prolonged? mustn't they have prolonged?
Perfeito com V-ing
mustn't I have been prolonging? mustn't you have been prolonging? mustn't she have been prolonging? mustn't we have been prolonging? mustn't you have been prolonging? mustn't they have been prolonging?