Conjugación del verbo inglés
COULD GRAPH

Verbo regular: graph - graphed - graphed

Afirmación

Forma simple	Forma con V-ing
I could graph you could graph he could graph we could graph you could graph they could graph	I could be graphing you could be graphing he could be graphing we could be graphing you could be graphing they could be graphing
Perfecto	Perfecto con V-ing
I could have graphed you could have graphed he could have graphed we could have graphed you could have graphed they could have graphed	I could have been graphing you could have been graphing he could have been graphing we could have been graphing you could have been graphing they could have been graphing

Negación

Forma simple	Forma con V-ing
I could not graph you could not graph he could not graph we could not graph you could not graph they could not graph	I could not be graphing you could not be graphing he could not be graphing we could not be graphing you could not be graphing they could not be graphing
Perfecto	Perfecto con V-ing
I could not have graphed you could not have graphed he could not have graphed we could not have graphed you could not have graphed they could not have graphed	I could not have been graphing you could not have been graphing he could not have been graphing we could not have been graphing you could not have been graphing they could not have been graphing

Forma interrogativa

Forma simple	Forma con V-ing
could I graph? could you graph? could he graph? could we graph? could you graph? could they graph?	could I be graphing? could you be graphing? could he be graphing? could we be graphing? could you be graphing? could they be graphing?
Perfecto	Perfecto con V-ing
could I have graphed? could you have graphed? could he have graphed? could we have graphed? could you have graphed? could they have graphed?	could I have been graphing? could you have been graphing? could he have been graphing? could we have been graphing? could you have been graphing? could they have been graphing?

Forma interro-negativa

Forma simple	Forma con V-ing
could I not graph? could you not graph? could he not graph? could we not graph? could you not graph? could they not graph?	could I not be graphing? could you not be graphing? could he not be graphing? could we not be graphing? could you not be graphing? could they not be graphing?
Perfecto	Perfecto con V-ing
could I not have graphed? could you not have graphed? could he not have graphed? could we not have graphed? could you not have graphed? could they not have graphed?	could I not have been graphing? could you not have been graphing? could he not have been graphing? could we not have been graphing? could you not have been graphing? could they not have been graphing?