Verbo regular: reference - referenced - referenced
Afirmação
Forma simple
I could reference you could reference she could reference we could reference you could reference they could reference
Forma com V-ing
I could be referencing you could be referencing she could be referencing we could be referencing you could be referencing they could be referencing
Perfeito
I could have referenced you could have referenced she could have referenced we could have referenced you could have referenced they could have referenced
Perfeito com V-ing
I could have been referencing you could have been referencing she could have been referencing we could have been referencing you could have been referencing they could have been referencing
Negação
Forma simple
I could not reference you could not reference she could not reference we could not reference you could not reference they could not reference
Forma com V-ing
I could not be referencing you could not be referencing she could not be referencing we could not be referencing you could not be referencing they could not be referencing
Perfeito
I could not have referenced you could not have referenced she could not have referenced we could not have referenced you could not have referenced they could not have referenced
Perfeito com V-ing
I could not have been referencing you could not have been referencing she could not have been referencing we could not have been referencing you could not have been referencing they could not have been referencing
Forma interrogativa
Forma simple
could I reference? could you reference? could she reference? could we reference? could you reference? could they reference?
Forma com V-ing
could I be referencing? could you be referencing? could she be referencing? could we be referencing? could you be referencing? could they be referencing?
Perfeito
could I have referenced? could you have referenced? could she have referenced? could we have referenced? could you have referenced? could they have referenced?
Perfeito com V-ing
could I have been referencing? could you have been referencing? could she have been referencing? could we have been referencing? could you have been referencing? could they have been referencing?
Forma interro-Negação
Forma simple
could I not reference? could you not reference? could she not reference? could we not reference? could you not reference? could they not reference?
Forma com V-ing
could I not be referencing? could you not be referencing? could she not be referencing? could we not be referencing? could you not be referencing? could they not be referencing?
Perfeito
could I not have referenced? could you not have referenced? could she not have referenced? could we not have referenced? could you not have referenced? could they not have referenced?
Perfeito com V-ing
could I not have been referencing? could you not have been referencing? could she not have been referencing? could we not have been referencing? could you not have been referencing? could they not have been referencing?