Conjugación del verbo inglés COULD CONCENTRATE
Verbo regular: concentrate - concentrated - concentrated
Afirmación
Forma simple
I could concentrateyou could concentrate
he could concentrate
we could concentrate
you could concentrate
they could concentrate
Forma con V-ing
I could be concentratingyou could be concentrating
he could be concentrating
we could be concentrating
you could be concentrating
they could be concentrating
Perfecto
I could have concentratedyou could have concentrated
he could have concentrated
we could have concentrated
you could have concentrated
they could have concentrated
Perfecto con V-ing
I could have been concentratingyou could have been concentrating
he could have been concentrating
we could have been concentrating
you could have been concentrating
they could have been concentrating
Negación
Forma simple
I couldn't concentrateyou couldn't concentrate
he couldn't concentrate
we couldn't concentrate
you couldn't concentrate
they couldn't concentrate
Forma con V-ing
I couldn't be concentratingyou couldn't be concentrating
he couldn't be concentrating
we couldn't be concentrating
you couldn't be concentrating
they couldn't be concentrating
Perfecto
I couldn't have concentratedyou couldn't have concentrated
he couldn't have concentrated
we couldn't have concentrated
you couldn't have concentrated
they couldn't have concentrated
Perfecto con V-ing
I couldn't have been concentratingyou couldn't have been concentrating
he couldn't have been concentrating
we couldn't have been concentrating
you couldn't have been concentrating
they couldn't have been concentrating
Forma interrogativa
Forma simple
could I concentrate?could you concentrate?
could he concentrate?
could we concentrate?
could you concentrate?
could they concentrate?
Forma con V-ing
could I be concentrating?could you be concentrating?
could he be concentrating?
could we be concentrating?
could you be concentrating?
could they be concentrating?
Perfecto
could I have concentrated?could you have concentrated?
could he have concentrated?
could we have concentrated?
could you have concentrated?
could they have concentrated?
Perfecto con V-ing
could I have been concentrating?could you have been concentrating?
could he have been concentrating?
could we have been concentrating?
could you have been concentrating?
could they have been concentrating?
Forma interro-negativa
Forma simple
couldn't I concentrate?couldn't you concentrate?
couldn't he concentrate?
couldn't we concentrate?
couldn't you concentrate?
couldn't they concentrate?
Forma con V-ing
couldn't I be concentrating?couldn't you be concentrating?
couldn't he be concentrating?
couldn't we be concentrating?
couldn't you be concentrating?
couldn't they be concentrating?
Perfecto
couldn't I have concentrated?couldn't you have concentrated?
couldn't he have concentrated?
couldn't we have concentrated?
couldn't you have concentrated?
couldn't they have concentrated?
Perfecto con V-ing
couldn't I have been concentrating?couldn't you have been concentrating?
couldn't he have been concentrating?
couldn't we have been concentrating?
couldn't you have been concentrating?
couldn't they have been concentrating?