must sew
Verbo irregular: sew - sewed- sewn

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must sew
you must sew
he must sew
we must sew
you must sew
they must sew 	I must be sewing
you must be sewing
he must be sewing
we must be sewing
you must be sewing
they must be sewing	I must have sewn
you must have sewn
he must have sewn
we must have sewn
you must have sewn
they must have sewn	I must have been sewing
you must have been sewing
he must have been sewing
we must have been sewing
you must have been sewing
they must have been sewing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't sew
you mustn't sew
he mustn't sew
we mustn't sew
you mustn't sew
they mustn't sew 	I mustn't be sewing
you mustn't be sewing
he mustn't be sewing
we mustn't be sewing
you mustn't be sewing
they mustn't be sewing	I mustn't have sewn
you mustn't have sewn
he mustn't have sewn
we mustn't have sewn
you mustn't have sewn
they mustn't have sewn	I mustn't have been sewing
you mustn't have been sewing
he mustn't have been sewing
we mustn't have been sewing
you mustn't have been sewing
they mustn't have been sewing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I sew?
must you sew?
must he sew?
must we sew?
must you sew?
must they sew? 	must I be sewing?
must you be sewing?
must he be sewing?
must we be sewing?
must you be sewing?
must they be sewing? 	must I have sewn?
must you have sewn?
must he have sewn?
must we have sewn?
must you have sewn?
must they have sewn? 	must I have been sewing?
must you have been sewing?
must he have been sewing?
must we have been sewing?
must you have been sewing?
must they have been sewing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I sew?
mustn't you sew?
mustn't he sew?
mustn't we sew?
mustn't you sew?
mustn't they sew? 	mustn't I be sewing?
mustn't you be sewing?
mustn't he be sewing?
mustn't we be sewing?
mustn't you be sewing?
mustn't they be sewing? 	mustn't I have sewn?
mustn't you have sewn?
mustn't he have sewn?
mustn't we have sewn?
mustn't you have sewn?
mustn't they have sewn? 	mustn't I have been sewing?
mustn't you have been sewing?
mustn't he have been sewing?
mustn't we have been sewing?
mustn't you have been sewing?
mustn't they have been sewing?