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