Conjugação do verbo inglês
COULD DISTINGUISH

Verbo regular: distinguish - distinguished - distinguished

Afirmação

Forma simple	Forma com V-ing
I could distinguish you could distinguish she could distinguish we could distinguish you could distinguish they could distinguish	I could be distinguishing you could be distinguishing she could be distinguishing we could be distinguishing you could be distinguishing they could be distinguishing
Perfeito	Perfeito com V-ing
I could have distinguished you could have distinguished she could have distinguished we could have distinguished you could have distinguished they could have distinguished	I could have been distinguishing you could have been distinguishing she could have been distinguishing we could have been distinguishing you could have been distinguishing they could have been distinguishing

Negação

Forma simple	Forma com V-ing
I couldn't distinguish you couldn't distinguish she couldn't distinguish we couldn't distinguish you couldn't distinguish they couldn't distinguish	I couldn't be distinguishing you couldn't be distinguishing she couldn't be distinguishing we couldn't be distinguishing you couldn't be distinguishing they couldn't be distinguishing
Perfeito	Perfeito com V-ing
I couldn't have distinguished you couldn't have distinguished she couldn't have distinguished we couldn't have distinguished you couldn't have distinguished they couldn't have distinguished	I couldn't have been distinguishing you couldn't have been distinguishing she couldn't have been distinguishing we couldn't have been distinguishing you couldn't have been distinguishing they couldn't have been distinguishing

Forma interrogativa

Forma simple	Forma com V-ing
could I distinguish? could you distinguish? could she distinguish? could we distinguish? could you distinguish? could they distinguish?	could I be distinguishing? could you be distinguishing? could she be distinguishing? could we be distinguishing? could you be distinguishing? could they be distinguishing?
Perfeito	Perfeito com V-ing
could I have distinguished? could you have distinguished? could she have distinguished? could we have distinguished? could you have distinguished? could they have distinguished?	could I have been distinguishing? could you have been distinguishing? could she have been distinguishing? could we have been distinguishing? could you have been distinguishing? could they have been distinguishing?

Forma interro-Negação

Forma simple	Forma com V-ing
couldn't I distinguish? couldn't you distinguish? couldn't she distinguish? couldn't we distinguish? couldn't you distinguish? couldn't they distinguish?	couldn't I be distinguishing? couldn't you be distinguishing? couldn't she be distinguishing? couldn't we be distinguishing? couldn't you be distinguishing? couldn't they be distinguishing?
Perfeito	Perfeito com V-ing
couldn't I have distinguished? couldn't you have distinguished? couldn't she have distinguished? couldn't we have distinguished? couldn't you have distinguished? couldn't they have distinguished?	couldn't I have been distinguishing? couldn't you have been distinguishing? couldn't she have been distinguishing? couldn't we have been distinguishing? couldn't you have been distinguishing? couldn't they have been distinguishing?