Alterar

to alter

🎯

Infinitive (infinitivo)

Base form of the verb

alterar

🏃

Gerund (gerundio)

Present participle (-ing form)

alterando

📋

Past Participle

Used in compound tenses

alterado

Simple Tenses

⚡

Present Indicative (presente de indicativo)

Present actions and habitual activities

Person	Conjugation	English
yo	altero I alter	I alter
tú	alteras you alter	you alter
él/ella/usted	altera he/she/you alters	he/she/you alters
nosotros	alteramos we alter	we alter
vosotros	alteráis you all alter	you all alter
ellos/ustedes	alteran they/you all alter	they/you all alter

🕰️

Imperfect Indicative (imperfecto de indicativo)

Ongoing past actions and descriptions

Person	Conjugation	English
yo	alteraba I used to alter	I used to alter
tú	alterabas you used to alter	you used to alter
él/ella/usted	alteraba he/she/you used to alter	he/she/you used to alter
nosotros	alterábamos we used to alter	we used to alter
vosotros	alterabais you all used to alter	you all used to alter
ellos/ustedes	alteraban they/you all used to alter	they/you all used to alter

📅

Preterit (pretérito)

Completed past actions

Person	Conjugation	English
yo	alteré I altered	I altered
tú	alteraste you altered	you altered
él/ella/usted	alteró he/she/you altered	he/she/you altered
nosotros	alteramos we altered	we altered
vosotros	alterasteis you all altered	you all altered
ellos/ustedes	alteraron they/you all altered	they/you all altered

🔮

Future (futuro)

Future actions and intentions

Person	Conjugation	English
yo	alteraré I will alter	I will alter
tú	alterarás you will alter	you will alter
él/ella/usted	alterará he/she/you will alter	he/she/you will alter
nosotros	alteraremos we will alter	we will alter
vosotros	alteraréis you all will alter	you all will alter
ellos/ustedes	alterarán they/you all will alter	they/you all will alter

🎯

Conditional (potencial simple)

Hypothetical and conditional actions

Person	Conjugation	English
yo	alteraría I would alter	I would alter
tú	alterarías you would alter	you would alter
él/ella/usted	alteraría he/she/you would alter	he/she/you would alter
nosotros	alteraríamos we would alter	we would alter
vosotros	alteraríais you all would alter	you all would alter
ellos/ustedes	alterarían they/you all would alter	they/you all would alter

💭

Present Subjunctive (presente de subjuntivo)

Subjective present actions and desires

Person	Conjugation	English
yo	altere that I alter	that I alter
tú	alteres that you alter	that you alter
él/ella/usted	altere that he/she/you alter	that he/she/you alter
nosotros	alteremos that we alter	that we alter
vosotros	alteréis that you all alter	that you all alter
ellos/ustedes	alteren that they/you all alter	that they/you all alter

🌙

Imperfect Subjunctive (imperfecto de subjuntivo)

Subjective past actions and hypothetical situations

Person	Conjugation	English
yo	alterara or alterase that I altered	that I altered
tú	alteraras or alterases that you altered	that you altered
él/ella/usted	alterara or alterase that he/she/you altered	that he/she/you altered
nosotros	alteráramos or alterásemos that we altered	that we altered
vosotros	alterarais or alteraseis that you all altered	that you all altered
ellos/ustedes	alteraran or alterasen that they/you all altered	that they/you all altered

Compound Tenses

✅

Present Perfect (perfecto de indicativo)

Actions completed recently or with present relevance

Person	Conjugation	English
yo	he alterado I have altered	I have altered
tú	has alterado you have altered	you have altered
él/ella/usted	ha alterado he/she/you have altered	he/she/you have altered
nosotros	hemos alterado we have altered	we have altered
vosotros	habéis alterado you all have altered	you all have altered
ellos/ustedes	han alterado they/you all have altered	they/you all have altered

⏪

Pluperfect Indicative (pluscuamperfecto de indicativo)

Actions completed before another past action

Person	Conjugation	English
yo	había alterado I had altered	I had altered
tú	habías alterado you had altered	you had altered
él/ella/usted	había alterado he/she/you had altered	he/she/you had altered
nosotros	habíamos alterado we had altered	we had altered
vosotros	habíais alterado you all had altered	you all had altered
ellos/ustedes	habían alterado they/you all had altered	they/you all had altered

📍

Preterit Perfect (pretérito anterior)

Actions completed immediately before another past action

Person	Conjugation	English
yo	hube alterado I had altered	I had altered
tú	hubiste alterado you had altered	you had altered
él/ella/usted	hubo alterado he/she/you had altered	he/she/you had altered
nosotros	hubimos alterado we had altered	we had altered
vosotros	hubisteis alterado you all had altered	you all had altered
ellos/ustedes	hubieron alterado they/you all had altered	they/you all had altered

🎊

Future Perfect (futuro perfecto)

Actions that will be completed by a future time

Person	Conjugation	English
yo	habré alterado I will have altered	I will have altered
tú	habrás alterado you will have altered	you will have altered
él/ella/usted	habrá alterado he/she/you will have altered	he/she/you will have altered
nosotros	habremos alterado we will have altered	we will have altered
vosotros	habréis alterado you all will have altered	you all will have altered
ellos/ustedes	habrán alterado they/you all will have altered	they/you all will have altered

🔄

Conditional Perfect (potencial compuesto)

Actions that would have been completed under certain conditions

Person	Conjugation	English
yo	habría alterado I would have altered	I would have altered
tú	habrías alterado you would have altered	you would have altered
él/ella/usted	habría alterado he/she/you would have altered	he/she/you would have altered
nosotros	habríamos alterado we would have altered	we would have altered
vosotros	habríais alterado you all would have altered	you all would have altered
ellos/ustedes	habrían alterado they/you all would have altered	they/you all would have altered

💫

Subjunctive Present Perfect (perfecto de subjuntivo)

Subjective actions completed in relation to the present

Person	Conjugation	English
yo	haya alterado that I have altered	that I have altered
tú	hayas alterado that you have altered	that you have altered
él/ella/usted	haya alterado that he/she/you have altered	that he/she/you have altered
nosotros	hayamos alterado that we have altered	that we have altered
vosotros	hayáis alterado that you all have altered	that you all have altered
ellos/ustedes	hayan alterado that they/you all have altered	that they/you all have altered

🌌

Subjunctive Past Perfect (pluscuamperfecto de subjuntivo)

Subjective actions completed before another past action

Person	Conjugation	English
yo	hubiera alterado that I had altered	that I had altered
tú	hubieras alterado that you had altered	that you had altered
él/ella/usted	hubiera alterado that he/she/you had altered	that he/she/you had altered
nosotros	hubiéramos alterado that we had altered	that we had altered
vosotros	hubierais alterado that you all had altered	that you all had altered
ellos/ustedes	hubieran alterado that they/you all had altered	that they/you all had altered

❗

Commands (imperativo)

Commands and direct orders

Person	Command	English
tú	altera	alter! (you)
usted	altere	alter! (you formal)
nosotros	alteremos	let's alter!
vosotros	alterad	alter! (you all)
ustedes	alteren	alter! (you all)

🚫

Negative Commands (imperativo negativo)

Negative commands and prohibitions

Person	Command	English
tú	no alteres	don't alter! (you)
usted	no altere	don't alter! (you formal)
nosotros	no alteremos	let's not alter!
vosotros	no alteréis	don't alter! (you all)
ustedes	no alteren	don't alter! (you all)

Continue Learning

Explore more resources to master Spanish verb conjugations

Interactive Lessons

Learn conjugation patterns step-by-step with guided lessons and exercises

Practice with Quizzes

Test your knowledge with customizable quizzes and track your progress

Explore More Verbs

Browse 3,500+ Spanish verbs with audio pronunciations in all tenses

Back to Home

Return to the homepage to explore all VerbRocket features