could shade
Verbo regular: shade - shaded- shaded

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

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

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

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