Duplicar Examples, Sentences and Quiz in Spanish

duplicar means to duplicate, and it is a verb you will meet in everyday Spanish again and again. Duplicar means to duplicate, and it covers duplicating a key, a document and a recipe, and doubling sales in two years. It is a spelling-change verb: the c becomes qu before e. This page puts duplicar to work: twelve example sentences in different tenses and persons, grouped by use, then two short dialogues where the verb appears naturally, then the common mistakes to avoid, and finally a ten-question quiz with explained answers. Every Spanish form on this page comes from the verified conjugation tables for duplicar, and the full tables are on the duplicar conjugation page if you need to check a form.

Example sentences

Everyday uses

  1. Yo duplico la llave en la cerrajería. — I duplicate the key at the locksmith's.
  2. Él duplica el documento para el archivo. — He/she duplicates the document for the file.
  3. Ayer, yo dupliqué la receta de la abuela. — Yesterday, I duplicated grandmother's recipe.
  4. Antes, nosotros duplicábamos las ventas en dos años. — Before, we used to duplicate the sales in two years.

In other tenses

  1. Mañana, tú duplicarás la llave en la cerrajería. — Tomorrow, you will duplicate the key at the locksmith's.
  2. Yo duplicaría el documento para el archivo. — I would duplicate the document for the file.
  3. Él ha duplicado la receta de la abuela. — He/she has duplicated grandmother's recipe.
  4. Espero que él duplique las ventas en dos años. — I hope he/she duplicates the sales in two years.

With other people

  1. Nosotros duplicamos la llave en la cerrajería. — We duplicate the key at the locksmith's.
  2. Vosotros duplicáis el documento para el archivo. — You all duplicate the document for the file.
  3. Antes, ellos duplicaban la receta de la abuela. — Before, they used to duplicate grandmother's recipe.
  4. Mañana, él duplicará las ventas en dos años. — Tomorrow, he/she will duplicate the sales in two years.

Duplicar in context

Two short dialogues that use duplicar the way people really use it. Read them aloud — the verb forms will stick much faster in a conversation than in a table.

Dialogue 1: today and yesterday

  • Ana: "Hola, ¿qué tal?" — "Hello, how are you?"
  • Luis: "Hoy duplico la llave en la cerrajería." — "Today I duplicate the key at the locksmith's."
  • Ana: "¿Y ayer?" — "And yesterday?"
  • Luis: "Ayer, dupliqué la receta de la abuela." — "Yesterday I duplicated grandmother's recipe."
  • Ana: "¿Y mañana, tú duplicarás el documento para el archivo?" — "And tomorrow, will you will duplicate the document for the file?"
  • Luis: "Sí, claro. Y tú también." — "Yes, of course. And you too."

Dialogue 2: making plans

  • Marta: "Mañana, nosotros duplicamos las ventas en dos años." — "Tomorrow we duplicate the sales in two years."
  • Carlos: "Perfecto. Yo duplicaría el documento para el archivo si tuviera más tiempo." — "Perfect. I would would duplicate the document for the file if I had more time."
  • Marta: "Espero que él duplique la llave en la cerrajería." — "I hope he duplicates the key at the locksmith's."
  • Carlos: "Seguro que sí. Él ya ha duplicado la receta de la abuela." — "Surely. He has already has duplicated grandmother's recipe."
  • Marta: "Vale, nos vemos mañana." — "OK, see you tomorrow."

Notice how the same verb changes with the tense: the present for the plan, the conditional for the wish, the subjunctive after espero que, and the present perfect for what has already happened. That is the whole point of learning a verb across its tenses, not just in one form.

Common mistakes

  1. Wrong: Yo duplica la llave en la cerrajería. — Right: Yo duplico la llave en la cerrajería. — The person matters: duplica is the él/ella/Ud. form, while the yo form is duplico. Using the third-person form with yo is one of the most common beginner errors.
  2. Wrong: Yo duplicé el documento para el archivo. — Right: Yo dupliqué el documento para el archivo. — In the preterite, the correct first-person form is dupliqué, not duplicé. duplicar 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 duplicar and copiar as identical in every context. — Right: Duplicar means to duplicate, while copiar means to copy, the close verb. — They overlap, but each has uses the other does not: duplicar fits sentences such as Duplico la llave en la cerrajería, while copiar belongs in a different sentence. Check the meaning you want before choosing.
  4. Wrong: Yo soy duplicado el documento para el archivo. — Right: Yo he duplicado el documento para el archivo. — Spanish perfect tenses use haber, not ser: he duplicado, has duplicado, ha duplicado. Ser plus the participle makes a passive, not a perfect tense.
  5. Wrong: De niño, yo dupliqué la receta de la abuela todos los días. — Right: De niño, yo duplicaba la receta de la abuela todos los días. — For a repeated habit in the past, use the imperfect (duplicaba), not the preterite. The preterite (dupliqué) is for one finished action.

Quiz: test yourself

Ten questions on duplicar: four on the forms, three on the meaning, and three on spotting the correct sentence. Check the answer key below.

  1. Complete the sentence: Yo ___ la llave en la cerrajería. (present tense) A. duplico B. duplicas C. duplica D. duplicamos

  2. Complete the sentence: Él ___ el documento para el archivo. (preterite tense) A. dupliqué B. duplicaste C. duplicamos D. duplicó

  3. Complete the sentence: Tú ___ la receta de la abuela. (future tense) A. duplicará B. duplicaremos C. duplicarás D. duplicaré

  4. Complete the sentence: Nosotros ___ las ventas en dos años. (imperfect tense) A. duplicabais B. duplicábamos C. duplicaba D. duplicabas

  5. What does "Yo duplico la llave en la cerrajería." mean in English? A. I duplicate the key at the locksmith's. B. I duplicate the document for the file. C. I duplicate grandmother's recipe. D. I duplicate the sales in two years.

  6. What does "Él duplicó el documento para el archivo." mean in English? A. He/she duplicated the key at the locksmith's. B. He/she duplicated grandmother's recipe. C. He/she duplicated the sales in two years. D. He/she duplicated the document for the file.

  7. What does "Nosotros duplicaremos la receta de la abuela." mean in English? A. We will duplicate the document for the file. B. We will duplicate the sales in two years. C. We will duplicate grandmother's recipe. D. We will duplicate the key at the locksmith's.

  8. Which sentence is correct? A. Yo duplican el documento para el archivo. B. Yo duplica el documento para el archivo. C. Yo duplico el documento para el archivo.

  9. Which sentence is correct? A. Él dupliqué la receta de la abuela. B. Él duplicó la receta de la abuela. C. Él duplicaron la receta de la abuela.

  10. Which sentence is correct? A. Espero que yo duplique las ventas en dos años. B. Yo duplice las ventas en dos años. C. Yo duplique las ventas en dos años.

Answer key

  1. duplico — The yo present form of duplicar is duplico.
  2. duplicó — The el preterite form of duplicar is duplicó.
  3. duplicarás — The tu future form of duplicar is duplicarás.
  4. duplicábamos — The nosotros imperfect form of duplicar is duplicábamos.
  5. I duplicate the key at the locksmith's. — The Spanish sentence uses the present form duplico, so the English is "I duplicate the key at the locksmith's." The other options use a different object or situation.
  6. He/she duplicated the document for the file. — The Spanish sentence uses the preterite form duplicó, so the English is "He/she duplicated the document for the file." The other options use a different object or situation.
  7. We will duplicate grandmother's recipe. — The Spanish sentence uses the future form duplicaremos, so the English is "We will duplicate grandmother's recipe." The other options use a different object or situation.
  8. Yo duplico el documento para el archivo. — The correct sentence is "Yo duplico el documento para el archivo." The other sentences use the wrong form or the wrong person for the subject.
  9. Él duplicó la receta de la abuela. — The correct sentence is "Él duplicó la receta de la abuela." The other sentences use the wrong form or the wrong person for the subject.
  10. Espero que yo duplique las ventas en dos años. — The correct sentence is "Espero que yo duplique las ventas en dos años." The other sentences use the wrong form or the wrong person for the subject.

Frequently asked questions

What does duplicar mean, and when do I use it?

Duplicar means to duplicate. Duplicar means to duplicate, and it covers duplicating a key, a document and a recipe, and doubling sales in two years. It is a spelling-change verb: the c becomes qu before e. A good first sentence to remember is Yo duplico la llave en la cerrajería. — "I duplicate the key at the locksmith's."

What is the difference between duplicar and copiar?

Duplicar means to duplicate, while copiar means to copy, the close verb. They appear in similar situations, but they are not interchangeable: use duplicar when you mean to duplicate, as in Yo duplico el documento para el archivo., and use copiar for to copy, the close verb.

How do I say "I duplicate" in the past?

For one finished action, use the preterite: Yo dupliqué el documento para el archivo.. For a repeated habit or background in the past, use the imperfect: Yo duplicaba la receta de la abuela.. For something that has just happened, use the present perfect: Yo he duplicado el documento para el archivo..

How do I practise duplicar?

Start with the duplicar conjugation page for the full tables, then the duplicar in the present tense page for the tense in focus, and use the Spanish Verb Quiz to test the forms under pressure. Spelling change: c becomes qu before e, so the preterite is dupliqué and the subjunctive is duplique.

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