I could shift you could shift she could shift we could shift you could shift they could shift
Forma com V-ing
I could be shifting you could be shifting she could be shifting we could be shifting you could be shifting they could be shifting
Perfeito
I could have shifted you could have shifted she could have shifted we could have shifted you could have shifted they could have shifted
Perfeito com V-ing
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
Negação
Forma simple
I couldn't shift you couldn't shift she couldn't shift we couldn't shift you couldn't shift they couldn't shift
Forma com V-ing
I couldn't be shifting you couldn't be shifting she couldn't be shifting we couldn't be shifting you couldn't be shifting they couldn't be shifting
Perfeito
I couldn't have shifted you couldn't have shifted she couldn't have shifted we couldn't have shifted you couldn't have shifted they couldn't have shifted
Perfeito com V-ing
I couldn't have been shifting you couldn't have been shifting she couldn't have been shifting we couldn't have been shifting you couldn't have been shifting they couldn't have been shifting
Forma interrogativa
Forma simple
could I shift? could you shift? could she shift? could we shift? could you shift? could they shift?
Forma com V-ing
could I be shifting? could you be shifting? could she be shifting? could we be shifting? could you be shifting? could they be shifting?
Perfeito
could I have shifted? could you have shifted? could she have shifted? could we have shifted? could you have shifted? could they have shifted?
Perfeito com V-ing
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-Negação
Forma simple
couldn't I shift? couldn't you shift? couldn't she shift? couldn't we shift? couldn't you shift? couldn't they shift?
Forma com V-ing
couldn't I be shifting? couldn't you be shifting? couldn't she be shifting? couldn't we be shifting? couldn't you be shifting? couldn't they be shifting?
Perfeito
couldn't I have shifted? couldn't you have shifted? couldn't she have shifted? couldn't we have shifted? couldn't you have shifted? couldn't they have shifted?
Perfeito com V-ing
couldn't I have been shifting? couldn't you have been shifting? couldn't she have been shifting? couldn't we have been shifting? couldn't you have been shifting? couldn't they have been shifting?