Conjugación del verbo inglés
COULD APPEAR

Verbo regular: appear - appeared - appeared

Afirmación

Forma simple	Forma con 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
Perfecto	Perfecto con 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

Negación

Forma simple	Forma con V-ing
I couldn't appear you couldn't appear he couldn't appear we couldn't appear you couldn't appear they couldn't appear	I couldn't be appearing you couldn't be appearing he couldn't be appearing we couldn't be appearing you couldn't be appearing they couldn't be appearing
Perfecto	Perfecto con V-ing
I couldn't have appeared you couldn't have appeared he couldn't have appeared we couldn't have appeared you couldn't have appeared they couldn't have appeared	I couldn't have been appearing you couldn't have been appearing he couldn't have been appearing we couldn't have been appearing you couldn't have been appearing they couldn't have been appearing

Forma interrogativa

Forma simple	Forma con 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?
Perfecto	Perfecto con 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-negativa

Forma simple	Forma con V-ing
couldn't I appear? couldn't you appear? couldn't he appear? couldn't we appear? couldn't you appear? couldn't they appear?	couldn't I be appearing? couldn't you be appearing? couldn't he be appearing? couldn't we be appearing? couldn't you be appearing? couldn't they be appearing?
Perfecto	Perfecto con V-ing
couldn't I have appeared? couldn't you have appeared? couldn't he have appeared? couldn't we have appeared? couldn't you have appeared? couldn't they have appeared?	couldn't I have been appearing? couldn't you have been appearing? couldn't he have been appearing? couldn't we have been appearing? couldn't you have been appearing? couldn't they have been appearing?