Conjugação do verbo inglês
COULD APPEAR

Verbo regular: appear - appeared - appeared

Afirmação

Forma simple	Forma com V-ing
I could appear you could appear he could appear we could appear you could appear they could appear	I could be appearing you could be appearing he could be appearing we could be appearing you could be appearing they could be appearing
Perfeito	Perfeito com V-ing
I could have appeared you could have appeared he could have appeared we could have appeared you could have appeared they could have appeared	I could have been appearing you could have been appearing he could have been appearing we could have been appearing you could have been appearing they could have been appearing

Negação

Forma simple	Forma com V-ing
I could not appear you could not appear he could not appear we could not appear you could not appear they could not appear	I could not be appearing you could not be appearing he could not be appearing we could not be appearing you could not be appearing they could not be appearing
Perfeito	Perfeito com V-ing
I could not have appeared you could not have appeared he could not have appeared we could not have appeared you could not have appeared they could not have appeared	I could not have been appearing you could not have been appearing he could not have been appearing we could not have been appearing you could not have been appearing they could not have been appearing

Forma interrogativa

Forma simple	Forma com V-ing
could I appear? could you appear? could he appear? could we appear? could you appear? could they appear?	could I be appearing? could you be appearing? could he be appearing? could we be appearing? could you be appearing? could they be appearing?
Perfeito	Perfeito com V-ing
could I have appeared? could you have appeared? could he have appeared? could we have appeared? could you have appeared? could they have appeared?	could I have been appearing? could you have been appearing? could he have been appearing? could we have been appearing? could you have been appearing? could they have been appearing?

Forma interro-Negação

Forma simple	Forma com V-ing
could I not appear? could you not appear? could he not appear? could we not appear? could you not appear? could they not appear?	could I not be appearing? could you not be appearing? could he not be appearing? could we not be appearing? could you not be appearing? could they not be appearing?
Perfeito	Perfeito com V-ing
could I not have appeared? could you not have appeared? could he not have appeared? could we not have appeared? could you not have appeared? could they not have appeared?	could I not have been appearing? could you not have been appearing? could he not have been appearing? could we not have been appearing? could you not have been appearing? could they not have been appearing?