I must melt you must melt he must melt we must melt you must melt they must melt
Forma con V-ing
I must be melting you must be melting he must be melting we must be melting you must be melting they must be melting
Perfecto
I must have melted you must have melted he must have melted we must have melted you must have melted they must have melted
Perfecto con V-ing
I must have been melting you must have been melting he must have been melting we must have been melting you must have been melting they must have been melting
Negación
Forma simple
I must not melt you must not melt he must not melt we must not melt you must not melt they must not melt
Forma con V-ing
I must not be melting you must not be melting he must not be melting we must not be melting you must not be melting they must not be melting
Perfecto
I must not have melted you must not have melted he must not have melted we must not have melted you must not have melted they must not have melted
Perfecto con V-ing
I must not have been melting you must not have been melting he must not have been melting we must not have been melting you must not have been melting they must not have been melting
Forma interrogativa
Forma simple
must I melt? must you melt? must he melt? must we melt? must you melt? must they melt?
Forma con V-ing
must I be melting? must you be melting? must he be melting? must we be melting? must you be melting? must they be melting?
Perfecto
must I have melted? must you have melted? must he have melted? must we have melted? must you have melted? must they have melted?
Perfecto con V-ing
must I have been melting? must you have been melting? must he have been melting? must we have been melting? must you have been melting? must they have been melting?
Forma interro-negativa
Forma simple
must I not melt? must you not melt? must he not melt? must we not melt? must you not melt? must they not melt?
Forma con V-ing
must I not be melting? must you not be melting? must he not be melting? must we not be melting? must you not be melting? must they not be melting?
Perfecto
must I not have melted? must you not have melted? must he not have melted? must we not have melted? must you not have melted? must they not have melted?
Perfecto con V-ing
must I not have been melting? must you not have been melting? must he not have been melting? must we not have been melting? must you not have been melting? must they not have been melting?