Conjugación del verbo inglés
MUST ALTER

Verbo regular: alter - altered - altered

Afirmación

Forma simple	Forma con V-ing
I must alter you must alter she must alter we must alter you must alter they must alter	I must be altering you must be altering she must be altering we must be altering you must be altering they must be altering
Perfecto	Perfecto con V-ing
I must have altered you must have altered she must have altered we must have altered you must have altered they must have altered	I must have been altering you must have been altering she must have been altering we must have been altering you must have been altering they must have been altering

Negación

Forma simple	Forma con V-ing
I must not alter you must not alter she must not alter we must not alter you must not alter they must not alter	I must not be altering you must not be altering she must not be altering we must not be altering you must not be altering they must not be altering
Perfecto	Perfecto con V-ing
I must not have altered you must not have altered she must not have altered we must not have altered you must not have altered they must not have altered	I must not have been altering you must not have been altering she must not have been altering we must not have been altering you must not have been altering they must not have been altering

Forma interrogativa

Forma simple	Forma con V-ing
must I alter? must you alter? must she alter? must we alter? must you alter? must they alter?	must I be altering? must you be altering? must she be altering? must we be altering? must you be altering? must they be altering?
Perfecto	Perfecto con V-ing
must I have altered? must you have altered? must she have altered? must we have altered? must you have altered? must they have altered?	must I have been altering? must you have been altering? must she have been altering? must we have been altering? must you have been altering? must they have been altering?

Forma interro-negativa

Forma simple	Forma con V-ing
must I not alter? must you not alter? must she not alter? must we not alter? must you not alter? must they not alter?	must I not be altering? must you not be altering? must she not be altering? must we not be altering? must you not be altering? must they not be altering?
Perfecto	Perfecto con V-ing
must I not have altered? must you not have altered? must she not have altered? must we not have altered? must you not have altered? must they not have altered?	must I not have been altering? must you not have been altering? must she not have been altering? must we not have been altering? must you not have been altering? must they not have been altering?