Conjugación del verbo inglés
COULD PREINSTRUCT

Verbo regular: preinstruct - preinstructed - preinstructed

Afirmación

Forma simple	Forma con V-ing
I could preinstruct you could preinstruct he could preinstruct we could preinstruct you could preinstruct they could preinstruct	I could be preinstructing you could be preinstructing he could be preinstructing we could be preinstructing you could be preinstructing they could be preinstructing
Perfecto	Perfecto con V-ing
I could have preinstructed you could have preinstructed he could have preinstructed we could have preinstructed you could have preinstructed they could have preinstructed	I could have been preinstructing you could have been preinstructing he could have been preinstructing we could have been preinstructing you could have been preinstructing they could have been preinstructing

Negación

Forma simple	Forma con V-ing
I could not preinstruct you could not preinstruct he could not preinstruct we could not preinstruct you could not preinstruct they could not preinstruct	I could not be preinstructing you could not be preinstructing he could not be preinstructing we could not be preinstructing you could not be preinstructing they could not be preinstructing
Perfecto	Perfecto con V-ing
I could not have preinstructed you could not have preinstructed he could not have preinstructed we could not have preinstructed you could not have preinstructed they could not have preinstructed	I could not have been preinstructing you could not have been preinstructing he could not have been preinstructing we could not have been preinstructing you could not have been preinstructing they could not have been preinstructing

Forma interrogativa

Forma simple	Forma con V-ing
could I preinstruct? could you preinstruct? could he preinstruct? could we preinstruct? could you preinstruct? could they preinstruct?	could I be preinstructing? could you be preinstructing? could he be preinstructing? could we be preinstructing? could you be preinstructing? could they be preinstructing?
Perfecto	Perfecto con V-ing
could I have preinstructed? could you have preinstructed? could he have preinstructed? could we have preinstructed? could you have preinstructed? could they have preinstructed?	could I have been preinstructing? could you have been preinstructing? could he have been preinstructing? could we have been preinstructing? could you have been preinstructing? could they have been preinstructing?

Forma interro-negativa

Forma simple	Forma con V-ing
could I not preinstruct? could you not preinstruct? could he not preinstruct? could we not preinstruct? could you not preinstruct? could they not preinstruct?	could I not be preinstructing? could you not be preinstructing? could he not be preinstructing? could we not be preinstructing? could you not be preinstructing? could they not be preinstructing?
Perfecto	Perfecto con V-ing
could I not have preinstructed? could you not have preinstructed? could he not have preinstructed? could we not have preinstructed? could you not have preinstructed? could they not have preinstructed?	could I not have been preinstructing? could you not have been preinstructing? could he not have been preinstructing? could we not have been preinstructing? could you not have been preinstructing? could they not have been preinstructing?