Conjugación del verbo inglés
COULD PREINSTRUCT

Verbo regular: preinstruct - preinstructed - preinstructed

Afirmación

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