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