Conjugación del verbo inglés
COULD TENSE

Verbo regular: tense - tensed - tensed

Afirmación

Forma simple	Forma con V-ing
I could tense you could tense he could tense we could tense you could tense they could tense	I could be tensing you could be tensing he could be tensing we could be tensing you could be tensing they could be tensing
Perfecto	Perfecto con V-ing
I could have tensed you could have tensed he could have tensed we could have tensed you could have tensed they could have tensed	I could have been tensing you could have been tensing he could have been tensing we could have been tensing you could have been tensing they could have been tensing

Negación

Forma simple	Forma con V-ing
I couldn't tense you couldn't tense he couldn't tense we couldn't tense you couldn't tense they couldn't tense	I couldn't be tensing you couldn't be tensing he couldn't be tensing we couldn't be tensing you couldn't be tensing they couldn't be tensing
Perfecto	Perfecto con V-ing
I couldn't have tensed you couldn't have tensed he couldn't have tensed we couldn't have tensed you couldn't have tensed they couldn't have tensed	I couldn't have been tensing you couldn't have been tensing he couldn't have been tensing we couldn't have been tensing you couldn't have been tensing they couldn't have been tensing

Forma interrogativa

Forma simple	Forma con V-ing
could I tense? could you tense? could he tense? could we tense? could you tense? could they tense?	could I be tensing? could you be tensing? could he be tensing? could we be tensing? could you be tensing? could they be tensing?
Perfecto	Perfecto con V-ing
could I have tensed? could you have tensed? could he have tensed? could we have tensed? could you have tensed? could they have tensed?	could I have been tensing? could you have been tensing? could he have been tensing? could we have been tensing? could you have been tensing? could they have been tensing?

Forma interro-negativa

Forma simple	Forma con V-ing
couldn't I tense? couldn't you tense? couldn't he tense? couldn't we tense? couldn't you tense? couldn't they tense?	couldn't I be tensing? couldn't you be tensing? couldn't he be tensing? couldn't we be tensing? couldn't you be tensing? couldn't they be tensing?
Perfecto	Perfecto con V-ing
couldn't I have tensed? couldn't you have tensed? couldn't he have tensed? couldn't we have tensed? couldn't you have tensed? couldn't they have tensed?	couldn't I have been tensing? couldn't you have been tensing? couldn't he have been tensing? couldn't we have been tensing? couldn't you have been tensing? couldn't they have been tensing?