Conjugación del verbo inglés
COULD SCUFF

Verbo regular: scuff - scuffed - scuffed

Afirmación

Forma simple	Forma con V-ing
I could scuff you could scuff he could scuff we could scuff you could scuff they could scuff	I could be scuffing you could be scuffing he could be scuffing we could be scuffing you could be scuffing they could be scuffing
Perfecto	Perfecto con V-ing
I could have scuffed you could have scuffed he could have scuffed we could have scuffed you could have scuffed they could have scuffed	I could have been scuffing you could have been scuffing he could have been scuffing we could have been scuffing you could have been scuffing they could have been scuffing

Negación

Forma simple	Forma con V-ing
I couldn't scuff you couldn't scuff he couldn't scuff we couldn't scuff you couldn't scuff they couldn't scuff	I couldn't be scuffing you couldn't be scuffing he couldn't be scuffing we couldn't be scuffing you couldn't be scuffing they couldn't be scuffing
Perfecto	Perfecto con V-ing
I couldn't have scuffed you couldn't have scuffed he couldn't have scuffed we couldn't have scuffed you couldn't have scuffed they couldn't have scuffed	I couldn't have been scuffing you couldn't have been scuffing he couldn't have been scuffing we couldn't have been scuffing you couldn't have been scuffing they couldn't have been scuffing

Forma interrogativa

Forma simple	Forma con V-ing
could I scuff? could you scuff? could he scuff? could we scuff? could you scuff? could they scuff?	could I be scuffing? could you be scuffing? could he be scuffing? could we be scuffing? could you be scuffing? could they be scuffing?
Perfecto	Perfecto con V-ing
could I have scuffed? could you have scuffed? could he have scuffed? could we have scuffed? could you have scuffed? could they have scuffed?	could I have been scuffing? could you have been scuffing? could he have been scuffing? could we have been scuffing? could you have been scuffing? could they have been scuffing?

Forma interro-negativa

Forma simple	Forma con V-ing
couldn't I scuff? couldn't you scuff? couldn't he scuff? couldn't we scuff? couldn't you scuff? couldn't they scuff?	couldn't I be scuffing? couldn't you be scuffing? couldn't he be scuffing? couldn't we be scuffing? couldn't you be scuffing? couldn't they be scuffing?
Perfecto	Perfecto con V-ing
couldn't I have scuffed? couldn't you have scuffed? couldn't he have scuffed? couldn't we have scuffed? couldn't you have scuffed? couldn't they have scuffed?	couldn't I have been scuffing? couldn't you have been scuffing? couldn't he have been scuffing? couldn't we have been scuffing? couldn't you have been scuffing? couldn't they have been scuffing?