must shear
Verbo irregular: shear - sheared- sheared, shorn

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must shear
you must shear
she must shear
we must shear
you must shear
they must shear 	I must be shearing
you must be shearing
she must be shearing
we must be shearing
you must be shearing
they must be shearing	I must have sheared, shorn
you must have sheared, shorn
she must have sheared, shorn
we must have sheared, shorn
you must have sheared, shorn
they must have sheared, shorn	I must have been shearing
you must have been shearing
she must have been shearing
we must have been shearing
you must have been shearing
they must have been shearing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not shear
you must not shear
she must not shear
we must not shear
you must not shear
they must not shear 	I must not be shearing
you must not be shearing
she must not be shearing
we must not be shearing
you must not be shearing
they must not be shearing	I must not have sheared, shorn
you must not have sheared, shorn
she must not have sheared, shorn
we must not have sheared, shorn
you must not have sheared, shorn
they must not have sheared, shorn	I must not have been shearing
you must not have been shearing
she must not have been shearing
we must not have been shearing
you must not have been shearing
they must not have been shearing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I shear?
must you shear?
must she shear?
must we shear?
must you shear?
must they shear? 	must I be shearing?
must you be shearing?
must she be shearing?
must we be shearing?
must you be shearing?
must they be shearing? 	must I have sheared, shorn?
must you have sheared, shorn?
must she have sheared, shorn?
must we have sheared, shorn?
must you have sheared, shorn?
must they have sheared, shorn? 	must I have been shearing?
must you have been shearing?
must she have been shearing?
must we have been shearing?
must you have been shearing?
must they have been shearing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not shear?
must you not shear?
must she not shear?
must we not shear?
must you not shear?
must they not shear? 	must I not be shearing?
must you not be shearing?
must she not be shearing?
must we not be shearing?
must you not be shearing?
must they not be shearing? 	must I not have sheared, shorn?
must you not have sheared, shorn?
must she not have sheared, shorn?
must we not have sheared, shorn?
must you not have sheared, shorn?
must they not have sheared, shorn? 	must I not have been shearing?
must you not have been shearing?
must she not have been shearing?
must we not have been shearing?
must you not have been shearing?
must they not have been shearing?