I could bike you could bike she could bike we could bike you could bike they could bike
Forma con V-ing
I could be biking you could be biking she could be biking we could be biking you could be biking they could be biking
Perfecto
I could have biked you could have biked she could have biked we could have biked you could have biked they could have biked
Perfecto con V-ing
I could have been biking you could have been biking she could have been biking we could have been biking you could have been biking they could have been biking
Negación
Forma simple
I couldn't bike you couldn't bike she couldn't bike we couldn't bike you couldn't bike they couldn't bike
Forma con V-ing
I couldn't be biking you couldn't be biking she couldn't be biking we couldn't be biking you couldn't be biking they couldn't be biking
Perfecto
I couldn't have biked you couldn't have biked she couldn't have biked we couldn't have biked you couldn't have biked they couldn't have biked
Perfecto con V-ing
I couldn't have been biking you couldn't have been biking she couldn't have been biking we couldn't have been biking you couldn't have been biking they couldn't have been biking
Forma interrogativa
Forma simple
could I bike? could you bike? could she bike? could we bike? could you bike? could they bike?
Forma con V-ing
could I be biking? could you be biking? could she be biking? could we be biking? could you be biking? could they be biking?
Perfecto
could I have biked? could you have biked? could she have biked? could we have biked? could you have biked? could they have biked?
Perfecto con V-ing
could I have been biking? could you have been biking? could she have been biking? could we have been biking? could you have been biking? could they have been biking?
Forma interro-negativa
Forma simple
couldn't I bike? couldn't you bike? couldn't she bike? couldn't we bike? couldn't you bike? couldn't they bike?
Forma con V-ing
couldn't I be biking? couldn't you be biking? couldn't she be biking? couldn't we be biking? couldn't you be biking? couldn't they be biking?
Perfecto
couldn't I have biked? couldn't you have biked? couldn't she have biked? couldn't we have biked? couldn't you have biked? couldn't they have biked?
Perfecto con V-ing
couldn't I have been biking? couldn't you have been biking? couldn't she have been biking? couldn't we have been biking? couldn't you have been biking? couldn't they have been biking?