Cuidado, este verbo pode não existir, a conjugação é dada como exemplo.
Afirmação
Forma simple
I could breath you could breath he could breath we could breath you could breath they could breath
Forma com 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
Perfeito
I could have breathed you could have breathed he could have breathed we could have breathed you could have breathed they could have breathed
Perfeito com 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
Negação
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 com 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
Perfeito
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
Perfeito com 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 com 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?
Perfeito
could I have breathed? could you have breathed? could he have breathed? could we have breathed? could you have breathed? could they have breathed?
Perfeito com 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-Negação
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 com 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?
Perfeito
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?
Perfeito com 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?