Verbo regular: underperform - underperformed - underperformed
Afirmación
Forma simple
I could underperform you could underperform she could underperform we could underperform you could underperform they could underperform
Forma con V-ing
I could be underperforming you could be underperforming she could be underperforming we could be underperforming you could be underperforming they could be underperforming
Perfecto
I could have underperformed you could have underperformed she could have underperformed we could have underperformed you could have underperformed they could have underperformed
Perfecto con V-ing
I could have been underperforming you could have been underperforming she could have been underperforming we could have been underperforming you could have been underperforming they could have been underperforming
Negación
Forma simple
I couldn't underperform you couldn't underperform she couldn't underperform we couldn't underperform you couldn't underperform they couldn't underperform
Forma con V-ing
I couldn't be underperforming you couldn't be underperforming she couldn't be underperforming we couldn't be underperforming you couldn't be underperforming they couldn't be underperforming
Perfecto
I couldn't have underperformed you couldn't have underperformed she couldn't have underperformed we couldn't have underperformed you couldn't have underperformed they couldn't have underperformed
Perfecto con V-ing
I couldn't have been underperforming you couldn't have been underperforming she couldn't have been underperforming we couldn't have been underperforming you couldn't have been underperforming they couldn't have been underperforming
Forma interrogativa
Forma simple
could I underperform? could you underperform? could she underperform? could we underperform? could you underperform? could they underperform?
Forma con V-ing
could I be underperforming? could you be underperforming? could she be underperforming? could we be underperforming? could you be underperforming? could they be underperforming?
Perfecto
could I have underperformed? could you have underperformed? could she have underperformed? could we have underperformed? could you have underperformed? could they have underperformed?
Perfecto con V-ing
could I have been underperforming? could you have been underperforming? could she have been underperforming? could we have been underperforming? could you have been underperforming? could they have been underperforming?
Forma interro-negativa
Forma simple
couldn't I underperform? couldn't you underperform? couldn't she underperform? couldn't we underperform? couldn't you underperform? couldn't they underperform?
Forma con V-ing
couldn't I be underperforming? couldn't you be underperforming? couldn't she be underperforming? couldn't we be underperforming? couldn't you be underperforming? couldn't they be underperforming?
Perfecto
couldn't I have underperformed? couldn't you have underperformed? couldn't she have underperformed? couldn't we have underperformed? couldn't you have underperformed? couldn't they have underperformed?
Perfecto con V-ing
couldn't I have been underperforming? couldn't you have been underperforming? couldn't she have been underperforming? couldn't we have been underperforming? couldn't you have been underperforming? couldn't they have been underperforming?