Conjugación del verbo inglés
COULD KNIFE

Verbo regular: knife - knifed - knifed

Afirmación

Forma simple	Forma con V-ing
I could knife you could knife he could knife we could knife you could knife they could knife	I could be knifing you could be knifing he could be knifing we could be knifing you could be knifing they could be knifing
Perfecto	Perfecto con V-ing
I could have knifed you could have knifed he could have knifed we could have knifed you could have knifed they could have knifed	I could have been knifing you could have been knifing he could have been knifing we could have been knifing you could have been knifing they could have been knifing

Negación

Forma simple	Forma con V-ing
I could not knife you could not knife he could not knife we could not knife you could not knife they could not knife	I could not be knifing you could not be knifing he could not be knifing we could not be knifing you could not be knifing they could not be knifing
Perfecto	Perfecto con V-ing
I could not have knifed you could not have knifed he could not have knifed we could not have knifed you could not have knifed they could not have knifed	I could not have been knifing you could not have been knifing he could not have been knifing we could not have been knifing you could not have been knifing they could not have been knifing

Forma interrogativa

Forma simple	Forma con V-ing
could I knife? could you knife? could he knife? could we knife? could you knife? could they knife?	could I be knifing? could you be knifing? could he be knifing? could we be knifing? could you be knifing? could they be knifing?
Perfecto	Perfecto con V-ing
could I have knifed? could you have knifed? could he have knifed? could we have knifed? could you have knifed? could they have knifed?	could I have been knifing? could you have been knifing? could he have been knifing? could we have been knifing? could you have been knifing? could they have been knifing?

Forma interro-negativa

Forma simple	Forma con V-ing
could I not knife? could you not knife? could he not knife? could we not knife? could you not knife? could they not knife?	could I not be knifing? could you not be knifing? could he not be knifing? could we not be knifing? could you not be knifing? could they not be knifing?
Perfecto	Perfecto con V-ing
could I not have knifed? could you not have knifed? could he not have knifed? could we not have knifed? could you not have knifed? could they not have knifed?	could I not have been knifing? could you not have been knifing? could he not have been knifing? could we not have been knifing? could you not have been knifing? could they not have been knifing?