Conjugación del verbo inglés
COULD DESCEND

Verbo regular: descend - descended - descended

Afirmación

Forma simple	Forma con V-ing
I could descend you could descend she could descend we could descend you could descend they could descend	I could be descending you could be descending she could be descending we could be descending you could be descending they could be descending
Perfecto	Perfecto con V-ing
I could have descended you could have descended she could have descended we could have descended you could have descended they could have descended	I could have been descending you could have been descending she could have been descending we could have been descending you could have been descending they could have been descending

Negación

Forma simple	Forma con V-ing
I couldn't descend you couldn't descend she couldn't descend we couldn't descend you couldn't descend they couldn't descend	I couldn't be descending you couldn't be descending she couldn't be descending we couldn't be descending you couldn't be descending they couldn't be descending
Perfecto	Perfecto con V-ing
I couldn't have descended you couldn't have descended she couldn't have descended we couldn't have descended you couldn't have descended they couldn't have descended	I couldn't have been descending you couldn't have been descending she couldn't have been descending we couldn't have been descending you couldn't have been descending they couldn't have been descending

Forma interrogativa

Forma simple	Forma con V-ing
could I descend? could you descend? could she descend? could we descend? could you descend? could they descend?	could I be descending? could you be descending? could she be descending? could we be descending? could you be descending? could they be descending?
Perfecto	Perfecto con V-ing
could I have descended? could you have descended? could she have descended? could we have descended? could you have descended? could they have descended?	could I have been descending? could you have been descending? could she have been descending? could we have been descending? could you have been descending? could they have been descending?

Forma interro-negativa

Forma simple	Forma con V-ing
couldn't I descend? couldn't you descend? couldn't she descend? couldn't we descend? couldn't you descend? couldn't they descend?	couldn't I be descending? couldn't you be descending? couldn't she be descending? couldn't we be descending? couldn't you be descending? couldn't they be descending?
Perfecto	Perfecto con V-ing
couldn't I have descended? couldn't you have descended? couldn't she have descended? couldn't we have descended? couldn't you have descended? couldn't they have descended?	couldn't I have been descending? couldn't you have been descending? couldn't she have been descending? couldn't we have been descending? couldn't you have been descending? couldn't they have been descending?