must shade
Verbo regular: shade - shaded- shaded

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must shade
you must shade
he must shade
we must shade
you must shade
they must shade 	I must be shading
you must be shading
he must be shading
we must be shading
you must be shading
they must be shading	I must have shaded
you must have shaded
he must have shaded
we must have shaded
you must have shaded
they must have shaded	I must have been shading
you must have been shading
he must have been shading
we must have been shading
you must have been shading
they must have been shading	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not shade
you must not shade
he must not shade
we must not shade
you must not shade
they must not shade 	I must not be shading
you must not be shading
he must not be shading
we must not be shading
you must not be shading
they must not be shading	I must not have shaded
you must not have shaded
he must not have shaded
we must not have shaded
you must not have shaded
they must not have shaded	I must not have been shading
you must not have been shading
he must not have been shading
we must not have been shading
you must not have been shading
they must not have been shading	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I shade?
must you shade?
must he shade?
must we shade?
must you shade?
must they shade? 	must I be shading?
must you be shading?
must he be shading?
must we be shading?
must you be shading?
must they be shading? 	must I have shaded?
must you have shaded?
must he have shaded?
must we have shaded?
must you have shaded?
must they have shaded? 	must I have been shading?
must you have been shading?
must he have been shading?
must we have been shading?
must you have been shading?
must they have been shading? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not shade?
must you not shade?
must he not shade?
must we not shade?
must you not shade?
must they not shade? 	must I not be shading?
must you not be shading?
must he not be shading?
must we not be shading?
must you not be shading?
must they not be shading? 	must I not have shaded?
must you not have shaded?
must he not have shaded?
must we not have shaded?
must you not have shaded?
must they not have shaded? 	must I not have been shading?
must you not have been shading?
must he not have been shading?
must we not have been shading?
must you not have been shading?
must they not have been shading?