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