Conjugación del verbo inglés
COULD GRAIN

Verbo regular: grain - grained - grained

Afirmación

Forma simple	Forma con V-ing
I could grain you could grain she could grain we could grain you could grain they could grain	I could be graining you could be graining she could be graining we could be graining you could be graining they could be graining
Perfecto	Perfecto con V-ing
I could have grained you could have grained she could have grained we could have grained you could have grained they could have grained	I could have been graining you could have been graining she could have been graining we could have been graining you could have been graining they could have been graining

Negación

Forma simple	Forma con V-ing
I could not grain you could not grain she could not grain we could not grain you could not grain they could not grain	I could not be graining you could not be graining she could not be graining we could not be graining you could not be graining they could not be graining
Perfecto	Perfecto con V-ing
I could not have grained you could not have grained she could not have grained we could not have grained you could not have grained they could not have grained	I could not have been graining you could not have been graining she could not have been graining we could not have been graining you could not have been graining they could not have been graining

Forma interrogativa

Forma simple	Forma con V-ing
could I grain? could you grain? could she grain? could we grain? could you grain? could they grain?	could I be graining? could you be graining? could she be graining? could we be graining? could you be graining? could they be graining?
Perfecto	Perfecto con V-ing
could I have grained? could you have grained? could she have grained? could we have grained? could you have grained? could they have grained?	could I have been graining? could you have been graining? could she have been graining? could we have been graining? could you have been graining? could they have been graining?

Forma interro-negativa

Forma simple	Forma con V-ing
could I not grain? could you not grain? could she not grain? could we not grain? could you not grain? could they not grain?	could I not be graining? could you not be graining? could she not be graining? could we not be graining? could you not be graining? could they not be graining?
Perfecto	Perfecto con V-ing
could I not have grained? could you not have grained? could she not have grained? could we not have grained? could you not have grained? could they not have grained?	could I not have been graining? could you not have been graining? could she not have been graining? could we not have been graining? could you not have been graining? could they not have been graining?