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