must sheer
Verbo regular: sheer - sheered- sheered

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must sheer
you must sheer
he must sheer
we must sheer
you must sheer
they must sheer 	I must be sheering
you must be sheering
he must be sheering
we must be sheering
you must be sheering
they must be sheering	I must have sheered
you must have sheered
he must have sheered
we must have sheered
you must have sheered
they must have sheered	I must have been sheering
you must have been sheering
he must have been sheering
we must have been sheering
you must have been sheering
they must have been sheering	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't sheer
you mustn't sheer
he mustn't sheer
we mustn't sheer
you mustn't sheer
they mustn't sheer 	I mustn't be sheering
you mustn't be sheering
he mustn't be sheering
we mustn't be sheering
you mustn't be sheering
they mustn't be sheering	I mustn't have sheered
you mustn't have sheered
he mustn't have sheered
we mustn't have sheered
you mustn't have sheered
they mustn't have sheered	I mustn't have been sheering
you mustn't have been sheering
he mustn't have been sheering
we mustn't have been sheering
you mustn't have been sheering
they mustn't have been sheering	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I sheer?
must you sheer?
must he sheer?
must we sheer?
must you sheer?
must they sheer? 	must I be sheering?
must you be sheering?
must he be sheering?
must we be sheering?
must you be sheering?
must they be sheering? 	must I have sheered?
must you have sheered?
must he have sheered?
must we have sheered?
must you have sheered?
must they have sheered? 	must I have been sheering?
must you have been sheering?
must he have been sheering?
must we have been sheering?
must you have been sheering?
must they have been sheering? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I sheer?
mustn't you sheer?
mustn't he sheer?
mustn't we sheer?
mustn't you sheer?
mustn't they sheer? 	mustn't I be sheering?
mustn't you be sheering?
mustn't he be sheering?
mustn't we be sheering?
mustn't you be sheering?
mustn't they be sheering? 	mustn't I have sheered?
mustn't you have sheered?
mustn't he have sheered?
mustn't we have sheered?
mustn't you have sheered?
mustn't they have sheered? 	mustn't I have been sheering?
mustn't you have been sheering?
mustn't he have been sheering?
mustn't we have been sheering?
mustn't you have been sheering?
mustn't they have been sheering?