Conjugación del verbo inglés
COULD SHIFT

Verbo regular: shift - shifted - shifted

Afirmación

Forma simple	Forma con V-ing
I could shift you could shift she could shift we could shift you could shift they could shift	I could be shifting you could be shifting she could be shifting we could be shifting you could be shifting they could be shifting
Perfecto	Perfecto con V-ing
I could have shifted you could have shifted she could have shifted we could have shifted you could have shifted they could have shifted	I could have been shifting you could have been shifting she could have been shifting we could have been shifting you could have been shifting they could have been shifting

Negación

Forma simple	Forma con V-ing
I could not shift you could not shift she could not shift we could not shift you could not shift they could not shift	I could not be shifting you could not be shifting she could not be shifting we could not be shifting you could not be shifting they could not be shifting
Perfecto	Perfecto con V-ing
I could not have shifted you could not have shifted she could not have shifted we could not have shifted you could not have shifted they could not have shifted	I could not have been shifting you could not have been shifting she could not have been shifting we could not have been shifting you could not have been shifting they could not have been shifting

Forma interrogativa

Forma simple	Forma con V-ing
could I shift? could you shift? could she shift? could we shift? could you shift? could they shift?	could I be shifting? could you be shifting? could she be shifting? could we be shifting? could you be shifting? could they be shifting?
Perfecto	Perfecto con V-ing
could I have shifted? could you have shifted? could she have shifted? could we have shifted? could you have shifted? could they have shifted?	could I have been shifting? could you have been shifting? could she have been shifting? could we have been shifting? could you have been shifting? could they have been shifting?

Forma interro-negativa

Forma simple	Forma con V-ing
could I not shift? could you not shift? could she not shift? could we not shift? could you not shift? could they not shift?	could I not be shifting? could you not be shifting? could she not be shifting? could we not be shifting? could you not be shifting? could they not be shifting?
Perfecto	Perfecto con V-ing
could I not have shifted? could you not have shifted? could she not have shifted? could we not have shifted? could you not have shifted? could they not have shifted?	could I not have been shifting? could you not have been shifting? could she not have been shifting? could we not have been shifting? could you not have been shifting? could they not have been shifting?