must melt
Verbo regular: melt - melted- melted

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must melt
you must melt
she must melt
we must melt
you must melt
they must melt 	I must be melting
you must be melting
she must be melting
we must be melting
you must be melting
they must be melting	I must have melted
you must have melted
she must have melted
we must have melted
you must have melted
they must have melted	I must have been melting
you must have been melting
she must have been melting
we must have been melting
you must have been melting
they must have been melting	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't melt
you mustn't melt
she mustn't melt
we mustn't melt
you mustn't melt
they mustn't melt 	I mustn't be melting
you mustn't be melting
she mustn't be melting
we mustn't be melting
you mustn't be melting
they mustn't be melting	I mustn't have melted
you mustn't have melted
she mustn't have melted
we mustn't have melted
you mustn't have melted
they mustn't have melted	I mustn't have been melting
you mustn't have been melting
she mustn't have been melting
we mustn't have been melting
you mustn't have been melting
they mustn't have been melting	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I melt?
must you melt?
must she melt?
must we melt?
must you melt?
must they melt? 	must I be melting?
must you be melting?
must she be melting?
must we be melting?
must you be melting?
must they be melting? 	must I have melted?
must you have melted?
must she have melted?
must we have melted?
must you have melted?
must they have melted? 	must I have been melting?
must you have been melting?
must she have been melting?
must we have been melting?
must you have been melting?
must they have been melting? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I melt?
mustn't you melt?
mustn't she melt?
mustn't we melt?
mustn't you melt?
mustn't they melt? 	mustn't I be melting?
mustn't you be melting?
mustn't she be melting?
mustn't we be melting?
mustn't you be melting?
mustn't they be melting? 	mustn't I have melted?
mustn't you have melted?
mustn't she have melted?
mustn't we have melted?
mustn't you have melted?
mustn't they have melted? 	mustn't I have been melting?
mustn't you have been melting?
mustn't she have been melting?
mustn't we have been melting?
mustn't you have been melting?
mustn't they have been melting?