Conjugação do verbo inglês
COULD BACKFIRE

Verbo regular: backfire - backfired - backfired

Afirmação

Forma simple	Forma com V-ing
I could backfire you could backfire she could backfire we could backfire you could backfire they could backfire	I could be backfiring you could be backfiring she could be backfiring we could be backfiring you could be backfiring they could be backfiring
Perfeito	Perfeito com V-ing
I could have backfired you could have backfired she could have backfired we could have backfired you could have backfired they could have backfired	I could have been backfiring you could have been backfiring she could have been backfiring we could have been backfiring you could have been backfiring they could have been backfiring

Negação

Forma simple	Forma com V-ing
I couldn't backfire you couldn't backfire she couldn't backfire we couldn't backfire you couldn't backfire they couldn't backfire	I couldn't be backfiring you couldn't be backfiring she couldn't be backfiring we couldn't be backfiring you couldn't be backfiring they couldn't be backfiring
Perfeito	Perfeito com V-ing
I couldn't have backfired you couldn't have backfired she couldn't have backfired we couldn't have backfired you couldn't have backfired they couldn't have backfired	I couldn't have been backfiring you couldn't have been backfiring she couldn't have been backfiring we couldn't have been backfiring you couldn't have been backfiring they couldn't have been backfiring

Forma interrogativa

Forma simple	Forma com V-ing
could I backfire? could you backfire? could she backfire? could we backfire? could you backfire? could they backfire?	could I be backfiring? could you be backfiring? could she be backfiring? could we be backfiring? could you be backfiring? could they be backfiring?
Perfeito	Perfeito com V-ing
could I have backfired? could you have backfired? could she have backfired? could we have backfired? could you have backfired? could they have backfired?	could I have been backfiring? could you have been backfiring? could she have been backfiring? could we have been backfiring? could you have been backfiring? could they have been backfiring?

Forma interro-Negação

Forma simple	Forma com V-ing
couldn't I backfire? couldn't you backfire? couldn't she backfire? couldn't we backfire? couldn't you backfire? couldn't they backfire?	couldn't I be backfiring? couldn't you be backfiring? couldn't she be backfiring? couldn't we be backfiring? couldn't you be backfiring? couldn't they be backfiring?
Perfeito	Perfeito com V-ing
couldn't I have backfired? couldn't you have backfired? couldn't she have backfired? couldn't we have backfired? couldn't you have backfired? couldn't they have backfired?	couldn't I have been backfiring? couldn't you have been backfiring? couldn't she have been backfiring? couldn't we have been backfiring? couldn't you have been backfiring? couldn't they have been backfiring?