I could compare you could compare he could compare we could compare you could compare they could compare
Forma con V-ing
I could be comparing you could be comparing he could be comparing we could be comparing you could be comparing they could be comparing
Perfecto
I could have compared you could have compared he could have compared we could have compared you could have compared they could have compared
Perfecto con V-ing
I could have been comparing you could have been comparing he could have been comparing we could have been comparing you could have been comparing they could have been comparing
Negación
Forma simple
I couldn't compare you couldn't compare he couldn't compare we couldn't compare you couldn't compare they couldn't compare
Forma con V-ing
I couldn't be comparing you couldn't be comparing he couldn't be comparing we couldn't be comparing you couldn't be comparing they couldn't be comparing
Perfecto
I couldn't have compared you couldn't have compared he couldn't have compared we couldn't have compared you couldn't have compared they couldn't have compared
Perfecto con V-ing
I couldn't have been comparing you couldn't have been comparing he couldn't have been comparing we couldn't have been comparing you couldn't have been comparing they couldn't have been comparing
Forma interrogativa
Forma simple
could I compare? could you compare? could he compare? could we compare? could you compare? could they compare?
Forma con V-ing
could I be comparing? could you be comparing? could he be comparing? could we be comparing? could you be comparing? could they be comparing?
Perfecto
could I have compared? could you have compared? could he have compared? could we have compared? could you have compared? could they have compared?
Perfecto con V-ing
could I have been comparing? could you have been comparing? could he have been comparing? could we have been comparing? could you have been comparing? could they have been comparing?
Forma interro-negativa
Forma simple
couldn't I compare? couldn't you compare? couldn't he compare? couldn't we compare? couldn't you compare? couldn't they compare?
Forma con V-ing
couldn't I be comparing? couldn't you be comparing? couldn't he be comparing? couldn't we be comparing? couldn't you be comparing? couldn't they be comparing?
Perfecto
couldn't I have compared? couldn't you have compared? couldn't he have compared? couldn't we have compared? couldn't you have compared? couldn't they have compared?
Perfecto con V-ing
couldn't I have been comparing? couldn't you have been comparing? couldn't he have been comparing? couldn't we have been comparing? couldn't you have been comparing? couldn't they have been comparing?