Conjugación del verbo inglés
COULD DRUM

Verbo regular: drum - drummed - drummed

Afirmación

Forma simple	Forma con V-ing
I could drum you could drum she could drum we could drum you could drum they could drum	I could be drumming you could be drumming she could be drumming we could be drumming you could be drumming they could be drumming
Perfecto	Perfecto con V-ing
I could have drummed you could have drummed she could have drummed we could have drummed you could have drummed they could have drummed	I could have been drumming you could have been drumming she could have been drumming we could have been drumming you could have been drumming they could have been drumming

Negación

Forma simple	Forma con V-ing
I could not drum you could not drum she could not drum we could not drum you could not drum they could not drum	I could not be drumming you could not be drumming she could not be drumming we could not be drumming you could not be drumming they could not be drumming
Perfecto	Perfecto con V-ing
I could not have drummed you could not have drummed she could not have drummed we could not have drummed you could not have drummed they could not have drummed	I could not have been drumming you could not have been drumming she could not have been drumming we could not have been drumming you could not have been drumming they could not have been drumming

Forma interrogativa

Forma simple	Forma con V-ing
could I drum? could you drum? could she drum? could we drum? could you drum? could they drum?	could I be drumming? could you be drumming? could she be drumming? could we be drumming? could you be drumming? could they be drumming?
Perfecto	Perfecto con V-ing
could I have drummed? could you have drummed? could she have drummed? could we have drummed? could you have drummed? could they have drummed?	could I have been drumming? could you have been drumming? could she have been drumming? could we have been drumming? could you have been drumming? could they have been drumming?

Forma interro-negativa

Forma simple	Forma con V-ing
could I not drum? could you not drum? could she not drum? could we not drum? could you not drum? could they not drum?	could I not be drumming? could you not be drumming? could she not be drumming? could we not be drumming? could you not be drumming? could they not be drumming?
Perfecto	Perfecto con V-ing
could I not have drummed? could you not have drummed? could she not have drummed? could we not have drummed? could you not have drummed? could they not have drummed?	could I not have been drumming? could you not have been drumming? could she not have been drumming? could we not have been drumming? could you not have been drumming? could they not have been drumming?