Conjugación del verbo inglés
COULD GRIEVE

Verbo regular: grieve - grieved - grieved

Afirmación

Forma simple	Forma con V-ing
I could grieve you could grieve he could grieve we could grieve you could grieve they could grieve	I could be grieving you could be grieving he could be grieving we could be grieving you could be grieving they could be grieving
Perfecto	Perfecto con V-ing
I could have grieved you could have grieved he could have grieved we could have grieved you could have grieved they could have grieved	I could have been grieving you could have been grieving he could have been grieving we could have been grieving you could have been grieving they could have been grieving

Negación

Forma simple	Forma con V-ing
I could not grieve you could not grieve he could not grieve we could not grieve you could not grieve they could not grieve	I could not be grieving you could not be grieving he could not be grieving we could not be grieving you could not be grieving they could not be grieving
Perfecto	Perfecto con V-ing
I could not have grieved you could not have grieved he could not have grieved we could not have grieved you could not have grieved they could not have grieved	I could not have been grieving you could not have been grieving he could not have been grieving we could not have been grieving you could not have been grieving they could not have been grieving

Forma interrogativa

Forma simple	Forma con V-ing
could I grieve? could you grieve? could he grieve? could we grieve? could you grieve? could they grieve?	could I be grieving? could you be grieving? could he be grieving? could we be grieving? could you be grieving? could they be grieving?
Perfecto	Perfecto con V-ing
could I have grieved? could you have grieved? could he have grieved? could we have grieved? could you have grieved? could they have grieved?	could I have been grieving? could you have been grieving? could he have been grieving? could we have been grieving? could you have been grieving? could they have been grieving?

Forma interro-negativa

Forma simple	Forma con V-ing
could I not grieve? could you not grieve? could he not grieve? could we not grieve? could you not grieve? could they not grieve?	could I not be grieving? could you not be grieving? could he not be grieving? could we not be grieving? could you not be grieving? could they not be grieving?
Perfecto	Perfecto con V-ing
could I not have grieved? could you not have grieved? could he not have grieved? could we not have grieved? could you not have grieved? could they not have grieved?	could I not have been grieving? could you not have been grieving? could he not have been grieving? could we not have been grieving? could you not have been grieving? could they not have been grieving?