Conjugación del verbo inglés
COULD DESCEND

Verbo regular: descend - descended - descended

Afirmación

Forma simple	Forma con V-ing
I could descend you could descend he could descend we could descend you could descend they could descend	I could be descending you could be descending he 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 he 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 he 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 he 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 he 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 he 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 he 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 he descend? could we descend? could you descend? could they descend?	could I be descending? could you be descending? could he 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 he 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 he 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 he 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 he 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 he 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 he have been descending? couldn't we have been descending? couldn't you have been descending? couldn't they have been descending?