I must drum you must drum he must drum we must drum you must drum they must drum
Forma con V-ing
I must be drumming you must be drumming he must be drumming we must be drumming you must be drumming they must be drumming
Perfecto
I must have drummed you must have drummed he must have drummed we must have drummed you must have drummed they must have drummed
Perfecto con V-ing
I must have been drumming you must have been drumming he must have been drumming we must have been drumming you must have been drumming they must have been drumming
Negación
Forma simple
I must not drum you must not drum he must not drum we must not drum you must not drum they must not drum
Forma con V-ing
I must not be drumming you must not be drumming he must not be drumming we must not be drumming you must not be drumming they must not be drumming
Perfecto
I must not have drummed you must not have drummed he must not have drummed we must not have drummed you must not have drummed they must not have drummed
Perfecto con V-ing
I must not have been drumming you must not have been drumming he must not have been drumming we must not have been drumming you must not have been drumming they must not have been drumming
Forma interrogativa
Forma simple
must I drum? must you drum? must he drum? must we drum? must you drum? must they drum?
Forma con V-ing
must I be drumming? must you be drumming? must he be drumming? must we be drumming? must you be drumming? must they be drumming?
Perfecto
must I have drummed? must you have drummed? must he have drummed? must we have drummed? must you have drummed? must they have drummed?
Perfecto con V-ing
must I have been drumming? must you have been drumming? must he have been drumming? must we have been drumming? must you have been drumming? must they have been drumming?
Forma interro-negativa
Forma simple
must I not drum? must you not drum? must he not drum? must we not drum? must you not drum? must they not drum?
Forma con V-ing
must I not be drumming? must you not be drumming? must he not be drumming? must we not be drumming? must you not be drumming? must they not be drumming?
Perfecto
must I not have drummed? must you not have drummed? must he not have drummed? must we not have drummed? must you not have drummed? must they not have drummed?
Perfecto con V-ing
must I not have been drumming? must you not have been drumming? must he not have been drumming? must we not have been drumming? must you not have been drumming? must they not have been drumming?