Conjugación del verbo inglés
COULD STAIN

Verbo regular: stain - stained - stained

Afirmación

Forma simple	Forma con V-ing
I could stain you could stain he could stain we could stain you could stain they could stain	I could be staining you could be staining he could be staining we could be staining you could be staining they could be staining
Perfecto	Perfecto con V-ing
I could have stained you could have stained he could have stained we could have stained you could have stained they could have stained	I could have been staining you could have been staining he could have been staining we could have been staining you could have been staining they could have been staining

Negación

Forma simple	Forma con V-ing
I could not stain you could not stain he could not stain we could not stain you could not stain they could not stain	I could not be staining you could not be staining he could not be staining we could not be staining you could not be staining they could not be staining
Perfecto	Perfecto con V-ing
I could not have stained you could not have stained he could not have stained we could not have stained you could not have stained they could not have stained	I could not have been staining you could not have been staining he could not have been staining we could not have been staining you could not have been staining they could not have been staining

Forma interrogativa

Forma simple	Forma con V-ing
could I stain? could you stain? could he stain? could we stain? could you stain? could they stain?	could I be staining? could you be staining? could he be staining? could we be staining? could you be staining? could they be staining?
Perfecto	Perfecto con V-ing
could I have stained? could you have stained? could he have stained? could we have stained? could you have stained? could they have stained?	could I have been staining? could you have been staining? could he have been staining? could we have been staining? could you have been staining? could they have been staining?

Forma interro-negativa

Forma simple	Forma con V-ing
could I not stain? could you not stain? could he not stain? could we not stain? could you not stain? could they not stain?	could I not be staining? could you not be staining? could he not be staining? could we not be staining? could you not be staining? could they not be staining?
Perfecto	Perfecto con V-ing
could I not have stained? could you not have stained? could he not have stained? could we not have stained? could you not have stained? could they not have stained?	could I not have been staining? could you not have been staining? could he not have been staining? could we not have been staining? could you not have been staining? could they not have been staining?