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