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