Conjugación del verbo inglés
COULD SIGHTSEE

Verbo regular: sightsee - sightseed - sightseed

Afirmación

Forma simple	Forma con V-ing
I could sightsee you could sightsee she could sightsee we could sightsee you could sightsee they could sightsee	I could be sightseeing you could be sightseeing she could be sightseeing we could be sightseeing you could be sightseeing they could be sightseeing
Perfecto	Perfecto con V-ing
I could have sightseed you could have sightseed she could have sightseed we could have sightseed you could have sightseed they could have sightseed	I could have been sightseeing you could have been sightseeing she could have been sightseeing we could have been sightseeing you could have been sightseeing they could have been sightseeing

Negación

Forma simple	Forma con V-ing
I could not sightsee you could not sightsee she could not sightsee we could not sightsee you could not sightsee they could not sightsee	I could not be sightseeing you could not be sightseeing she could not be sightseeing we could not be sightseeing you could not be sightseeing they could not be sightseeing
Perfecto	Perfecto con V-ing
I could not have sightseed you could not have sightseed she could not have sightseed we could not have sightseed you could not have sightseed they could not have sightseed	I could not have been sightseeing you could not have been sightseeing she could not have been sightseeing we could not have been sightseeing you could not have been sightseeing they could not have been sightseeing

Forma interrogativa

Forma simple	Forma con V-ing
could I sightsee? could you sightsee? could she sightsee? could we sightsee? could you sightsee? could they sightsee?	could I be sightseeing? could you be sightseeing? could she be sightseeing? could we be sightseeing? could you be sightseeing? could they be sightseeing?
Perfecto	Perfecto con V-ing
could I have sightseed? could you have sightseed? could she have sightseed? could we have sightseed? could you have sightseed? could they have sightseed?	could I have been sightseeing? could you have been sightseeing? could she have been sightseeing? could we have been sightseeing? could you have been sightseeing? could they have been sightseeing?

Forma interro-negativa

Forma simple	Forma con V-ing
could I not sightsee? could you not sightsee? could she not sightsee? could we not sightsee? could you not sightsee? could they not sightsee?	could I not be sightseeing? could you not be sightseeing? could she not be sightseeing? could we not be sightseeing? could you not be sightseeing? could they not be sightseeing?
Perfecto	Perfecto con V-ing
could I not have sightseed? could you not have sightseed? could she not have sightseed? could we not have sightseed? could you not have sightseed? could they not have sightseed?	could I not have been sightseeing? could you not have been sightseeing? could she not have been sightseeing? could we not have been sightseeing? could you not have been sightseeing? could they not have been sightseeing?