Unificar Conjugation in Spanish

The Spanish verb unificar means to unify, and it is a verb you will use again and again once you know it. Unificar means to unify, and it is used for unifying two departments, the criteria of a company, the rules of different countries and class timetables. It is a spelling-change verb: the c becomes qu before e. Like every Spanish verb, unificar changes its ending for each person and tense, and this page gives you the complete picture: every tense, every person, the gerund and the past participle, all from the verified conjugation tables. For example, in the present tense you say unifico los dos departamentos, and in the preterite you say unifiqué las normas de los países. Work through the tables below, read the notes for each tense, and then test yourself with the examples, the common mistakes and the quiz at the end of the page.

Quick facts

  • Infinitive: unificar
  • English: to unify
  • Verb type: irregular verb
  • Ending: -ar
  • Gerund: unificando
  • Past participle: unificado
  • Auxiliary verb: haber (all perfect tenses are formed with haber + unificado)

Pronunciation is not listed on this page: the verified tables do not include IPA for unificar, so no pronunciation is given rather than an invented one. Spelling change: c becomes qu before e, so the preterite is unifiqué and the subjunctive is unifique.

Full conjugation tables

Every form below comes from the verified conjugation tables for unificar. The imperfect subjunctive is shown in its -ra forms; the -se forms use the same stem. For reflexive verbs, the pronoun column shows the reflexive pronoun that goes before each form.

Present indicative

Person Form
yo unifico
tú unificas
él/ella/Ud. unifica
nosotros/as unificamos
vosotros/as unificáis
ellos/ellas/Uds. unifican

Preterite

Person Form
yo unifiqué
tú unificaste
él/ella/Ud. unificó
nosotros/as unificamos
vosotros/as unificasteis
ellos/ellas/Uds. unificaron

Imperfect

Person Form
yo unificaba
tú unificabas
él/ella/Ud. unificaba
nosotros/as unificábamos
vosotros/as unificabais
ellos/ellas/Uds. unificaban

Future

Person Form
yo unificaré
tú unificarás
él/ella/Ud. unificará
nosotros/as unificaremos
vosotros/as unificaréis
ellos/ellas/Uds. unificarán

Conditional

Person Form
yo unificaría
tú unificarías
él/ella/Ud. unificaría
nosotros/as unificaríamos
vosotros/as unificaríais
ellos/ellas/Uds. unificarían

Present perfect

Person Form
yo he unificado
tú has unificado
él/ella/Ud. ha unificado
nosotros/as hemos unificado
vosotros/as habéis unificado
ellos/ellas/Uds. han unificado

Pluperfect

Person Form
yo había unificado
tú habías unificado
él/ella/Ud. había unificado
nosotros/as habíamos unificado
vosotros/as habíais unificado
ellos/ellas/Uds. habían unificado

Future perfect

Person Form
yo habré unificado
tú habrás unificado
él/ella/Ud. habrá unificado
nosotros/as habremos unificado
vosotros/as habréis unificado
ellos/ellas/Uds. habrán unificado

Conditional perfect

Person Form
yo habría unificado
tú habrías unificado
él/ella/Ud. habría unificado
nosotros/as habríamos unificado
vosotros/as habríais unificado
ellos/ellas/Uds. habrían unificado

Present subjunctive

Person Form
yo unifique
tú unifiques
él/ella/Ud. unifique
nosotros/as unifiquemos
vosotros/as unifiquéis
ellos/ellas/Uds. unifiquen

Imperfect subjunctive (-ra)

Person Form
yo unificara
tú unificaras
él/ella/Ud. unificara
nosotros/as unificáramos
vosotros/as unificarais
ellos/ellas/Uds. unificaran

Imperative (affirmative)

Person Form
tú unifica
él/ella/Ud. unifique
nosotros/as unifiquemos
vosotros/as unificad
ellos/ellas/Uds. unifiquen

Imperative (negative)

Person Form
tú unifiques
él/ella/Ud. unifique
nosotros/as unifiquemos
vosotros/as unifiquéis
ellos/ellas/Uds. unifiquen

Gerund and past participle

Form Spanish Use
Gerund unificando with estar for the progressive: estoy unificando
Past participle unificado with haber for the perfect tenses: he unificado

How to use each tense

Present indicative

Use the present for routines, general facts and what is happening right now. Note the spelling change here: c becomes qu before e, so the forms keep the same sound as the infinitive. For unificar, the present looks like this in a real sentence: Unifico los dos departamentos. Learn the present forms in the table above alongside this example, and notice how the ending, not the stem, usually carries the meaning of the tense.

Preterite

Use the preterite for finished actions with a clear end, often with ayer, el año pasado or anoche. Note the spelling change in the first person: c becomes qu before e, so the preterite first person is unifiqué. For unificar, the preterite looks like this in a real sentence: Ayer, unifiqué los criterios de la empresa. Learn the preterite forms in the table above alongside this example, and notice how the ending, not the stem, usually carries the meaning of the tense.

Imperfect

Use the imperfect for background, habits and actions in progress in the past, often with de niño, antes or mientras. For this verb the tense is regular, so the forms follow the standard endings for its verb class. For unificar, the imperfect looks like this in a real sentence: De niño, unificaba las normas de los países. Learn the imperfect forms in the table above alongside this example, and notice how the ending, not the stem, usually carries the meaning of the tense.

Future

Use the future for plans, predictions and promises, often with mañana, el año que viene or pronto. For this verb the tense is regular, so the forms follow the standard endings for its verb class. For unificar, the future looks like this in a real sentence: Mañana, unificaré los horarios de las clases. Learn the future forms in the table above alongside this example, and notice how the ending, not the stem, usually carries the meaning of the tense.

Conditional

Use the conditional for polite requests, hypotheticals and what would happen, often with si clauses. For this verb the tense is regular, so the forms follow the standard endings for its verb class. For unificar, the conditional looks like this in a real sentence: Unificaría los dos departamentos si pudiera. Learn the conditional forms in the table above alongside this example, and notice how the ending, not the stem, usually carries the meaning of the tense.

Present perfect

Use the present perfect for recent actions and experiences, often with hoy, esta semana or ya. For this verb the tense is regular, so the forms follow the standard endings for its verb class. For unificar, the present perfect looks like this in a real sentence: Hoy, he unificado los criterios de la empresa. Learn the present perfect forms in the table above alongside this example, and notice how the ending, not the stem, usually carries the meaning of the tense.

Pluperfect

Use the pluperfect when one past action happened before another past action. For this verb the tense is regular, so the forms follow the standard endings for its verb class. For unificar, the pluperfect looks like this in a real sentence: Había unificado las normas de los países antes de salir. Learn the pluperfect forms in the table above alongside this example, and notice how the ending, not the stem, usually carries the meaning of the tense.

Future perfect

Use the future perfect for something that will already be finished by a future time. For this verb the tense is regular, so the forms follow the standard endings for its verb class. For unificar, the future perfect looks like this in a real sentence: Para mañana, habré unificado los horarios de las clases. Learn the future perfect forms in the table above alongside this example, and notice how the ending, not the stem, usually carries the meaning of the tense.

Conditional perfect

Use the conditional perfect for what would have happened under different conditions. For this verb the tense is regular, so the forms follow the standard endings for its verb class. For unificar, the conditional perfect looks like this in a real sentence: Habría unificado los dos departamentos con más tiempo. Learn the conditional perfect forms in the table above alongside this example, and notice how the ending, not the stem, usually carries the meaning of the tense.

Present subjunctive

Use the present subjunctive after expressions of wish, doubt, emotion and hope, such as espero que or quiero que. Note the spelling change here: c becomes qu before e, so the forms keep the same sound as the infinitive. For unificar, the present subjunctive looks like this in a real sentence: Espero que él unifique los criterios de la empresa. Learn the present subjunctive forms in the table above alongside this example, and notice how the ending, not the stem, usually carries the meaning of the tense.

Imperfect subjunctive (-ra)

Use the imperfect subjunctive after past wishes and in si clauses about the past, and note the -ra forms shown here; the -se forms use the same stem. For this verb the tense is regular, so the forms follow the standard endings for its verb class. For unificar, the imperfect subjunctive looks like this in a real sentence: Si él unificara las normas de los países, todo cambiaría. Learn the imperfect subjunctive forms in the table above alongside this example, and notice how the ending, not the stem, usually carries the meaning of the tense.

Imperative (affirmative)

Use the affirmative imperative for direct commands, instructions and invitations. Note the spelling change here: c becomes qu before e, so the forms keep the same sound as the infinitive. For unificar, the affirmative imperative looks like this in a real sentence: ¡Unifica los horarios de las clases! Learn the affirmative imperative forms in the table above alongside this example, and notice how the ending, not the stem, usually carries the meaning of the tense.

Imperative (negative)

Use the negative imperative, always with no, to tell someone not to do something. Note the spelling change here: c becomes qu before e, so the forms keep the same sound as the infinitive. For unificar, the negative imperative looks like this in a real sentence: No unifiques los dos departamentos. Learn the negative imperative forms in the table above alongside this example, and notice how the ending, not the stem, usually carries the meaning of the tense.

Example sentences

Ten natural sentences with unificar, covering different tenses and persons. Each one uses a form from the tables above.

  1. Unifico los dos departamentos. — I unify the two departments.
  2. Unifica los criterios de la empresa. — He/she unifies the company's criteria.
  3. Ayer, unifiqué las normas de los países. — Yesterday, I unified the countries' rules.
  4. Antes, nosotros unificábamos los horarios de las clases. — Before, we used to unify the class timetables.
  5. Mañana, tú unificarás los dos departamentos. — Tomorrow, you will unify the two departments.
  6. Yo unificaría los criterios de la empresa si tuviera más tiempo. — I would unify the company's criteria if I had more time.
  7. Él ha unificado las normas de los países. — He has unified the countries' rules.
  8. Espero que él unifique los horarios de las clases. — I hope he unifies the class timetables.
  9. Yo ya había unificado los dos departamentos antes de salir. — I had already unified the two departments before leaving.
  10. Ellos unificaban los criterios de la empresa cuando eran jóvenes. — They used to unify the company's criteria when they were young.

Common mistakes

  1. Wrong: Yo unifica los dos departamentos. — Right: Yo unifico los dos departamentos. — The person matters: unifica is the él/ella/Ud. form, while the yo form is unifico. Using the third-person form with yo is one of the most common beginner errors.
  2. Wrong: Yo unificé los criterios de la empresa. — Right: Yo unifiqué los criterios de la empresa. — In the preterite, the correct first-person form is unifiqué, not unificé. unificar is a spelling-change verb: c becomes qu before e, so the written form changes to keep the same sound. The regular-looking form is wrong.
  3. Wrong: Treating unificar and unir as identical in every context. — Right: Unificar means to unify, while unir means to join, the simple verb. — They overlap, but each has uses the other does not: unificar fits sentences such as Unifico los dos departamentos, while unir belongs in a different sentence. Check the meaning you want before choosing.
  4. Wrong: Yo soy unificado los criterios de la empresa. — Right: Yo he unificado los criterios de la empresa. — Spanish perfect tenses use haber, not ser: he unificado, has unificado, ha unificado. Ser plus the participle makes a passive, not a perfect tense.
  5. Wrong: De niño, yo unifiqué las normas de los países todos los días. — Right: De niño, yo unificaba las normas de los países todos los días. — For a repeated habit in the past, use the imperfect (unificaba), not the preterite. The preterite (unifiqué) is for one finished action.

Quiz: test yourself

Ten questions on unificar. Choose the right form, then check the answer key below.

  1. Complete the sentence: Yo ___ los dos departamentos. (present tense) A. unifico B. unificas C. unifica D. unificamos

  2. Complete the sentence: Ayer, él ___ los criterios de la empresa. (preterite) A. unifiqué B. unificaste C. unificaron D. unificó

  3. Complete the sentence: Antes, nosotros ___ las normas de los países. (imperfect) A. unificabas B. unificaban C. unificábamos D. unificaba

  4. Complete the sentence: Mañana, tú ___ los horarios de las clases. (future) A. unificaremos B. unificarás C. unificaré D. unificará

  5. Complete the sentence: Yo ___ los dos departamentos si pudiera. (conditional) A. unificaría B. unificarías C. unificarían D. unifico

  6. Complete the sentence: Espero que él ___ los criterios de la empresa. (present subjunctive) A. unifiques B. unifiquemos C. unifico D. unifique

  7. Complete the sentence: Si yo ___ las normas de los países, todo cambiaría. (imperfect subjunctive, -ra form) A. unificáramos B. unifico C. unificara D. unificaras

  8. Complete the sentence: Nosotros ___ los horarios de las clases. (present perfect) A. han unificado B. hemos unificado C. he unificado D. has unificado

  9. Complete the command: ¡___ los dos departamentos! (affirmative imperative, tú) A. unifica B. unifique C. unifiquemos D. unificad

  10. Which is the gerund of unificar, used with estar for the progressive? A. unificado B. unifico C. unifiqué D. unificando

Answer key

  1. unifico — The first-person present of unificar is unifico. The other options are the tú, él/ella and nosotros forms.
  2. unificó — The third-person preterite of unificar is unificó, the form for a single finished action in the past.
  3. unificábamos — The nosotros imperfect of unificar is unificábamos, used here for a repeated past habit.
  4. unificarás — The second-person future of unificar is unificarás.
  5. unificaría — The first-person conditional of unificar is unificaría, the form for what would happen.
  6. unifique — After espero que, the subjunctive is required: the third-person present subjunctive of unificar is unifique.
  7. unificara — The first-person imperfect subjunctive (-ra) of unificar is unificara.
  8. hemos unificado — The nosotros present perfect of unificar is hemos unificado: hemos + unificado.
  9. unifica — The affirmative tú imperative of unificar is unifica.
  10. unificando — The gerund of unificar is unificando: estoy unificando. The participle unificado is used with haber instead.

Frequently asked questions

What does unificar mean in English?

Unificar means to unify. It is used in everyday situations such as Unifico los dos departamentos. The exact English wording depends on the context, but the core meaning stays the same across the tenses.

Is unificar regular or irregular?

Unificar is a fully regular -ar verb, so every tense follows the standard endings for its class. Once you know the regular pattern, you can produce every form on this page, including unifico in the present and unifiqué in the preterite.

What is the difference between unificar and unir?

Unificar means to unify, while unir means to join, the simple verb. They are easy to confuse because they appear in similar situations, but they are not interchangeable: use unificar when you mean to unify, as in Unifico los dos departamentos, and use unir for to join, the simple verb. When in doubt, check the object of the sentence — it usually shows which verb fits.

How do I say “I unify” in the past?

It depends on the kind of past. For one finished action, use the preterite: yo unifiqué los criterios de la empresa. For a repeated habit or background in the past, use the imperfect: yo unificaba las normas de los países. For something that has just happened, use the present perfect: yo he unificado los criterios de la empresa.

How do I practise unificar?

Start with the present tense table, then drill the preterite and the imperfect, since those two past tenses cause the most mistakes. Try the unificar examples and quiz page for more sentences, and use the Spanish Verb Quiz to test the forms under pressure.

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