I could stain you could stain she could stain we could stain you could stain they could stain
Forma com V-ing
I could be staining you could be staining she could be staining we could be staining you could be staining they could be staining
Perfeito
I could have stained you could have stained she could have stained we could have stained you could have stained they could have stained
Perfeito com V-ing
I could have been staining you could have been staining she could have been staining we could have been staining you could have been staining they could have been staining
Negação
Forma simple
I couldn't stain you couldn't stain she couldn't stain we couldn't stain you couldn't stain they couldn't stain
Forma com V-ing
I couldn't be staining you couldn't be staining she couldn't be staining we couldn't be staining you couldn't be staining they couldn't be staining
Perfeito
I couldn't have stained you couldn't have stained she couldn't have stained we couldn't have stained you couldn't have stained they couldn't have stained
Perfeito com V-ing
I couldn't have been staining you couldn't have been staining she couldn't have been staining we couldn't have been staining you couldn't have been staining they couldn't have been staining
Forma interrogativa
Forma simple
could I stain? could you stain? could she stain? could we stain? could you stain? could they stain?
Forma com V-ing
could I be staining? could you be staining? could she be staining? could we be staining? could you be staining? could they be staining?
Perfeito
could I have stained? could you have stained? could she have stained? could we have stained? could you have stained? could they have stained?
Perfeito com V-ing
could I have been staining? could you have been staining? could she have been staining? could we have been staining? could you have been staining? could they have been staining?
Forma interro-Negação
Forma simple
couldn't I stain? couldn't you stain? couldn't she stain? couldn't we stain? couldn't you stain? couldn't they stain?
Forma com V-ing
couldn't I be staining? couldn't you be staining? couldn't she be staining? couldn't we be staining? couldn't you be staining? couldn't they be staining?
Perfeito
couldn't I have stained? couldn't you have stained? couldn't she have stained? couldn't we have stained? couldn't you have stained? couldn't they have stained?
Perfeito com V-ing
couldn't I have been staining? couldn't you have been staining? couldn't she have been staining? couldn't we have been staining? couldn't you have been staining? couldn't they have been staining?