must mat
Verbo regular: mat - matted- matted

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must mat
you must mat
he must mat
we must mat
you must mat
they must mat 	I must be matting
you must be matting
he must be matting
we must be matting
you must be matting
they must be matting	I must have matted
you must have matted
he must have matted
we must have matted
you must have matted
they must have matted	I must have been matting
you must have been matting
he must have been matting
we must have been matting
you must have been matting
they must have been matting	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't mat
you mustn't mat
he mustn't mat
we mustn't mat
you mustn't mat
they mustn't mat 	I mustn't be matting
you mustn't be matting
he mustn't be matting
we mustn't be matting
you mustn't be matting
they mustn't be matting	I mustn't have matted
you mustn't have matted
he mustn't have matted
we mustn't have matted
you mustn't have matted
they mustn't have matted	I mustn't have been matting
you mustn't have been matting
he mustn't have been matting
we mustn't have been matting
you mustn't have been matting
they mustn't have been matting	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I mat?
must you mat?
must he mat?
must we mat?
must you mat?
must they mat? 	must I be matting?
must you be matting?
must he be matting?
must we be matting?
must you be matting?
must they be matting? 	must I have matted?
must you have matted?
must he have matted?
must we have matted?
must you have matted?
must they have matted? 	must I have been matting?
must you have been matting?
must he have been matting?
must we have been matting?
must you have been matting?
must they have been matting? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I mat?
mustn't you mat?
mustn't he mat?
mustn't we mat?
mustn't you mat?
mustn't they mat? 	mustn't I be matting?
mustn't you be matting?
mustn't he be matting?
mustn't we be matting?
mustn't you be matting?
mustn't they be matting? 	mustn't I have matted?
mustn't you have matted?
mustn't he have matted?
mustn't we have matted?
mustn't you have matted?
mustn't they have matted? 	mustn't I have been matting?
mustn't you have been matting?
mustn't he have been matting?
mustn't we have been matting?
mustn't you have been matting?
mustn't they have been matting?