must shave
Verbo irregular: shave - shaved- shaven, shaved

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must shave
you must shave
he must shave
we must shave
you must shave
they must shave 	I must be shaving
you must be shaving
he must be shaving
we must be shaving
you must be shaving
they must be shaving	I must have shaven, shaved
you must have shaven, shaved
he must have shaven, shaved
we must have shaven, shaved
you must have shaven, shaved
they must have shaven, shaved	I must have been shaving
you must have been shaving
he must have been shaving
we must have been shaving
you must have been shaving
they must have been shaving	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't shave
you mustn't shave
he mustn't shave
we mustn't shave
you mustn't shave
they mustn't shave 	I mustn't be shaving
you mustn't be shaving
he mustn't be shaving
we mustn't be shaving
you mustn't be shaving
they mustn't be shaving	I mustn't have shaven, shaved
you mustn't have shaven, shaved
he mustn't have shaven, shaved
we mustn't have shaven, shaved
you mustn't have shaven, shaved
they mustn't have shaven, shaved	I mustn't have been shaving
you mustn't have been shaving
he mustn't have been shaving
we mustn't have been shaving
you mustn't have been shaving
they mustn't have been shaving	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I shave?
must you shave?
must he shave?
must we shave?
must you shave?
must they shave? 	must I be shaving?
must you be shaving?
must he be shaving?
must we be shaving?
must you be shaving?
must they be shaving? 	must I have shaven, shaved?
must you have shaven, shaved?
must he have shaven, shaved?
must we have shaven, shaved?
must you have shaven, shaved?
must they have shaven, shaved? 	must I have been shaving?
must you have been shaving?
must he have been shaving?
must we have been shaving?
must you have been shaving?
must they have been shaving? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I shave?
mustn't you shave?
mustn't he shave?
mustn't we shave?
mustn't you shave?
mustn't they shave? 	mustn't I be shaving?
mustn't you be shaving?
mustn't he be shaving?
mustn't we be shaving?
mustn't you be shaving?
mustn't they be shaving? 	mustn't I have shaven, shaved?
mustn't you have shaven, shaved?
mustn't he have shaven, shaved?
mustn't we have shaven, shaved?
mustn't you have shaven, shaved?
mustn't they have shaven, shaved? 	mustn't I have been shaving?
mustn't you have been shaving?
mustn't he have been shaving?
mustn't we have been shaving?
mustn't you have been shaving?
mustn't they have been shaving?