I must melt you must melt he must melt we must melt you must melt they must melt
Forme en 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
Perfect
I must have melted you must have melted he must have melted we must have melted you must have melted they must have melted
Perfect en 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
Négation
Forme simple
I mustn't melt you mustn't melt he mustn't melt we mustn't melt you mustn't melt they mustn't melt
Forme en V-ing
I mustn't be melting you mustn't be melting he mustn't be melting we mustn't be melting you mustn't be melting they mustn't be melting
Perfect
I mustn't have melted you mustn't have melted he mustn't have melted we mustn't have melted you mustn't have melted they mustn't have melted
Perfect en V-ing
I mustn't have been melting you mustn't have been melting he mustn't have been melting we mustn't have been melting you mustn't have been melting they mustn't have been melting
Forme interrogative
Forme simple
must I melt? must you melt? must he melt? must we melt? must you melt? must they melt?
Forme en 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?
Perfect
must I have melted? must you have melted? must he have melted? must we have melted? must you have melted? must they have melted?
Perfect en 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?
Forme interro-négative
Forme simple
mustn't I melt? mustn't you melt? mustn't he melt? mustn't we melt? mustn't you melt? mustn't they melt?
Forme en V-ing
mustn't I be melting? mustn't you be melting? mustn't he be melting? mustn't we be melting? mustn't you be melting? mustn't they be melting?
Perfect
mustn't I have melted? mustn't you have melted? mustn't he have melted? mustn't we have melted? mustn't you have melted? mustn't they have melted?
Perfect en V-ing
mustn't I have been melting? mustn't you have been melting? mustn't he have been melting? mustn't we have been melting? mustn't you have been melting? mustn't they have been melting?