I could shade you could shade he could shade we could shade you could shade they could shade
Forma con V-ing
I could be shading you could be shading he could be shading we could be shading you could be shading they could be shading
Perfecto
I could have shaded you could have shaded he could have shaded we could have shaded you could have shaded they could have shaded
Perfecto con V-ing
I could have been shading you could have been shading he could have been shading we could have been shading you could have been shading they could have been shading
Negación
Forma simple
I couldn't shade you couldn't shade he couldn't shade we couldn't shade you couldn't shade they couldn't shade
Forma con V-ing
I couldn't be shading you couldn't be shading he couldn't be shading we couldn't be shading you couldn't be shading they couldn't be shading
Perfecto
I couldn't have shaded you couldn't have shaded he couldn't have shaded we couldn't have shaded you couldn't have shaded they couldn't have shaded
Perfecto con V-ing
I couldn't have been shading you couldn't have been shading he couldn't have been shading we couldn't have been shading you couldn't have been shading they couldn't have been shading
Forma interrogativa
Forma simple
could I shade? could you shade? could he shade? could we shade? could you shade? could they shade?
Forma con V-ing
could I be shading? could you be shading? could he be shading? could we be shading? could you be shading? could they be shading?
Perfecto
could I have shaded? could you have shaded? could he have shaded? could we have shaded? could you have shaded? could they have shaded?
Perfecto con V-ing
could I have been shading? could you have been shading? could he have been shading? could we have been shading? could you have been shading? could they have been shading?
Forma interro-negativa
Forma simple
couldn't I shade? couldn't you shade? couldn't he shade? couldn't we shade? couldn't you shade? couldn't they shade?
Forma con V-ing
couldn't I be shading? couldn't you be shading? couldn't he be shading? couldn't we be shading? couldn't you be shading? couldn't they be shading?
Perfecto
couldn't I have shaded? couldn't you have shaded? couldn't he have shaded? couldn't we have shaded? couldn't you have shaded? couldn't they have shaded?
Perfecto con V-ing
couldn't I have been shading? couldn't you have been shading? couldn't he have been shading? couldn't we have been shading? couldn't you have been shading? couldn't they have been shading?