I must switch you must switch she must switch we must switch you must switch they must switch
Forma com V-ing
I must be switching you must be switching she must be switching we must be switching you must be switching they must be switching
Perfeito
I must have switched you must have switched she must have switched we must have switched you must have switched they must have switched
Perfeito com V-ing
I must have been switching you must have been switching she must have been switching we must have been switching you must have been switching they must have been switching
Negação
Forma simple
I mustn't switch you mustn't switch she mustn't switch we mustn't switch you mustn't switch they mustn't switch
Forma com V-ing
I mustn't be switching you mustn't be switching she mustn't be switching we mustn't be switching you mustn't be switching they mustn't be switching
Perfeito
I mustn't have switched you mustn't have switched she mustn't have switched we mustn't have switched you mustn't have switched they mustn't have switched
Perfeito com V-ing
I mustn't have been switching you mustn't have been switching she mustn't have been switching we mustn't have been switching you mustn't have been switching they mustn't have been switching
Forma interrogativa
Forma simple
must I switch? must you switch? must she switch? must we switch? must you switch? must they switch?
Forma com V-ing
must I be switching? must you be switching? must she be switching? must we be switching? must you be switching? must they be switching?
Perfeito
must I have switched? must you have switched? must she have switched? must we have switched? must you have switched? must they have switched?
Perfeito com V-ing
must I have been switching? must you have been switching? must she have been switching? must we have been switching? must you have been switching? must they have been switching?
Forma interro-Negação
Forma simple
mustn't I switch? mustn't you switch? mustn't she switch? mustn't we switch? mustn't you switch? mustn't they switch?
Forma com V-ing
mustn't I be switching? mustn't you be switching? mustn't she be switching? mustn't we be switching? mustn't you be switching? mustn't they be switching?
Perfeito
mustn't I have switched? mustn't you have switched? mustn't she have switched? mustn't we have switched? mustn't you have switched? mustn't they have switched?
Perfeito com V-ing
mustn't I have been switching? mustn't you have been switching? mustn't she have been switching? mustn't we have been switching? mustn't you have been switching? mustn't they have been switching?