Atención, este verbo puede no existir, se da como ejemplo la conjugación.
Afirmación
Forma simple
I could breath you could breath he could breath we could breath you could breath they could breath
Forma con V-ing
I could be breathing you could be breathing he could be breathing we could be breathing you could be breathing they could be breathing
Perfecto
I could have breathed you could have breathed he could have breathed we could have breathed you could have breathed they could have breathed
Perfecto con V-ing
I could have been breathing you could have been breathing he could have been breathing we could have been breathing you could have been breathing they could have been breathing
Negación
Forma simple
I couldn't breath you couldn't breath he couldn't breath we couldn't breath you couldn't breath they couldn't breath
Forma con V-ing
I couldn't be breathing you couldn't be breathing he couldn't be breathing we couldn't be breathing you couldn't be breathing they couldn't be breathing
Perfecto
I couldn't have breathed you couldn't have breathed he couldn't have breathed we couldn't have breathed you couldn't have breathed they couldn't have breathed
Perfecto con V-ing
I couldn't have been breathing you couldn't have been breathing he couldn't have been breathing we couldn't have been breathing you couldn't have been breathing they couldn't have been breathing
Forma interrogativa
Forma simple
could I breath? could you breath? could he breath? could we breath? could you breath? could they breath?
Forma con V-ing
could I be breathing? could you be breathing? could he be breathing? could we be breathing? could you be breathing? could they be breathing?
Perfecto
could I have breathed? could you have breathed? could he have breathed? could we have breathed? could you have breathed? could they have breathed?
Perfecto con V-ing
could I have been breathing? could you have been breathing? could he have been breathing? could we have been breathing? could you have been breathing? could they have been breathing?
Forma interro-negativa
Forma simple
couldn't I breath? couldn't you breath? couldn't he breath? couldn't we breath? couldn't you breath? couldn't they breath?
Forma con V-ing
couldn't I be breathing? couldn't you be breathing? couldn't he be breathing? couldn't we be breathing? couldn't you be breathing? couldn't they be breathing?
Perfecto
couldn't I have breathed? couldn't you have breathed? couldn't he have breathed? couldn't we have breathed? couldn't you have breathed? couldn't they have breathed?
Perfecto con V-ing
couldn't I have been breathing? couldn't you have been breathing? couldn't he have been breathing? couldn't we have been breathing? couldn't you have been breathing? couldn't they have been breathing?