Clasificar Present Tense Conjugation in Spanish

The present tense of clasificar — "to classify" in English — is the form you need for what happens now, for habits and for general truths. This page gives you the full present conjugation table for clasificar with all six persons, explains exactly how the tense is formed for this verb, shows when to use it with real examples, and finishes with a quiz so you can test yourself. Clasificar means to classify, and it is used for classifying books by subject, documents in folders, students by level and waste for recycling. It is a spelling-change verb: the c becomes qu before e, so the preterite is clasifiqué. To see it in a real sentence: Él clasifica los libros por tema. — "He/she classifies the books by subject." Work through the table below, then the formation notes, the usage rules and the contrast with the preterite, and test yourself at the end.

Present tense conjugation table: clasificar

Every person of clasificar in the present tense. The gerund is clasificando and the past participle is clasificado.

Present indicative

Person Form
yo clasifico
tú clasificas
él/ella/Ud. clasifica
nosotros/as clasificamos
vosotros/as clasificáis
ellos/ellas/Uds. clasifican

How the present indicative of clasificar is formed

The present indicative of clasificar is built from the stem clasific- plus the present endings for -ar verbs. Take the infinitive, drop the -ar ending, and add the ending that matches the person. The table below shows the endings, and the full table above shows them attached to the stem.

Person Ending Form
yo -o clasifico
tú -as clasificas
él/ella/Ud. -a clasifica
nosotros/as -amos clasificamos
vosotros/as -áis clasificáis
ellos/ellas/Uds. -an clasifican

clasificar is a spelling-change verb: c becomes qu before e. That is why the written form changes in some persons — the sound stays the same, and only the spelling adapts. In this tense, watch the first-person form clasifico in particular.

The gerund of clasificar is clasificando and the past participle is clasificado. Both are regular for this verb, and the participle is the form you need for all the perfect tenses with haber.

When to use the present tense of clasificar

The present tense is not one single use — it covers several situations, and clasificar appears in all of them. The five uses below are the ones you will meet most often, each with an example that shows the verb in a natural sentence.

Habits and routines

The present tense describes things you do regularly. If you do it every day, every week or every morning, the present is the tense to use. For clasificar, this use looks like this: "Yo clasifico los libros por tema." — "I classify the books by subject." Notice how the present form carries the time meaning on its own, without any extra word for the tense.

General facts

The present tense states facts that are generally true, not tied to one moment. It is the tense for definitions and permanent situations. For clasificar, this use looks like this: "Él clasifica los documentos en carpetas." — "He/she classifies the documents in folders." Notice how the present form carries the time meaning on its own, without any extra word for the tense.

What is happening now

The present tense also covers what is happening at this moment, especially with verbs that describe an action in progress. For clasificar, this use looks like this: "Nosotros clasificamos a los alumnos por niveles." — "We classify the students by level." Notice how the present form carries the time meaning on its own, without any extra word for the tense.

Timetables and schedules

The present tense is used for fixed plans and timetables, such as trains, classes and opening times, even when they refer to the future. For clasificar, this use looks like this: "Ellos clasifican los residuos para reciclar." — "They classify the waste for recycling." Notice how the present form carries the time meaning on its own, without any extra word for the tense.

Instructions and requests

The present tense appears in instructions and polite requests, where it sounds softer than a direct command. For clasificar, this use looks like this: "Tú clasificas los libros por tema." — "You classify the books by subject." Notice how the present form carries the time meaning on its own, without any extra word for the tense.

The present tense vs the preterite

Learners often mix up the present and the preterite with clasificar. The rule is simple: the present is for habits, facts and what is happening now, while the preterite is for one finished action in the past. The three pairs below show the same idea in both tenses, so you can feel the difference.

Pair 1: present vs preterite

  • Present: "Yo clasifico los libros por tema." — "I classify the books by subject."
  • Preterite: "Yo clasifiqué los libros por tema." — "I classified the books by subject." The first sentence uses the present because it describes a habit or a present fact; the second uses the preterite because it describes a finished action. The verb is the same — only the tense changes the meaning.

Pair 2: present vs preterite

  • Present: "Él clasifica los documentos en carpetas." — "He/she classifies the documents in folders."
  • Preterite: "Él clasificó los documentos en carpetas." — "He/she classified the documents in folders." The first sentence uses the present because it describes a habit or a present fact; the second uses the preterite because it describes a finished action. The verb is the same — only the tense changes the meaning.

Pair 3: present vs preterite

  • Present: "Nosotros clasificamos a los alumnos por niveles." — "We classify the students by level."
  • Preterite: "Nosotros clasificamos a los alumnos por niveles." — "We classified the students by level." The first sentence uses the present because it describes a habit or a present fact; the second uses the preterite because it describes a finished action. The verb is the same — only the tense changes the meaning.

Example sentences in the present tense

Eight natural sentences with clasificar in the present tense only. Each one uses a form from the table above.

  1. Yo clasifico los libros por tema. — I classify the books by subject.
  2. Tú clasificas los documentos en carpetas. — You classify the documents in folders.
  3. Él clasifica a los alumnos por niveles. — He/she classifies the students by level.
  4. Nosotros clasificamos los residuos para reciclar. — We classify the waste for recycling.
  5. Vosotros clasificáis los libros por tema. — You all classify the books by subject.
  6. Ellos clasifican los documentos en carpetas. — They classify the documents in folders.
  7. Yo clasifico a los alumnos por niveles. — I classify the students by level.
  8. Él clasifica los residuos para reciclar. — He/she classifies the waste for recycling.

Common mistakes

  1. Wrong: Vosotros clasificais los documentos en carpetas. — Right: Vosotros clasificáis los documentos en carpetas. — The vosotros present form carries a written accent: clasificáis, not clasificais.
  2. Wrong: Ayer, yo clasifico a los alumnos por niveles. — Right: Ayer, yo clasifiqué a los alumnos por niveles. — Ayer means yesterday, so it needs the preterite (clasifiqué), not the present (clasifico). The present is for now, not for yesterday.
  3. Wrong: Yo clasifica los libros por tema. — Right: Yo clasifico los libros por tema. — The person matters: clasifica is the él/ella/Ud. form, while the yo form is clasifico.
  4. Wrong: Yo soy clasificado los documentos en carpetas. — Right: Yo he clasificado los documentos en carpetas. — Spanish perfect tenses use haber, not ser: he clasificado. Ser plus the participle makes a passive, not a perfect tense.

Quiz: test yourself

Eight questions on the present tense of clasificar. Choose the right form, then check the answer key below.

  1. Complete the sentence: Yo ___ los libros por tema. (present tense) A. clasifico B. clasificas C. clasifica D. clasificamos

  2. Complete the sentence: Tú ___ los documentos en carpetas. (present tense) A. clasificas B. clasifico C. clasifica D. clasificamos

  3. Complete the sentence: Él ___ a los alumnos por niveles. (present tense) A. clasifica B. clasifico C. clasificas D. clasificamos

  4. Complete the sentence: Nosotros ___ los residuos para reciclar. (present tense) A. clasificamos B. clasifico C. clasificas D. clasifica

  5. Complete the sentence: Vosotros ___ los libros por tema. (present tense) A. clasificáis B. clasifico C. clasificas D. clasifica

  6. Complete the sentence: Ellos ___ los documentos en carpetas. (present tense) A. clasifican B. clasifico C. clasificas D. clasifica

  7. Complete the sentence: Yo ___ a los alumnos por niveles. (present tense) A. clasifico B. clasificas C. clasifica D. clasificamos

  8. Complete the sentence: Él ___ los residuos para reciclar. (present tense) A. clasifica B. clasifico C. clasificas D. clasificamos

Answer key

  1. clasifico — The yo present form of clasificar is clasifico. The other options are the other persons of the same tense.
  2. clasificas — The tu present form of clasificar is clasificas. The other options are the other persons of the same tense.
  3. clasifica — The el present form of clasificar is clasifica. The other options are the other persons of the same tense.
  4. clasificamos — The nosotros present form of clasificar is clasificamos. The other options are the other persons of the same tense.
  5. clasificáis — The vosotros present form of clasificar is clasificáis. The other options are the other persons of the same tense.
  6. clasifican — The ellos present form of clasificar is clasifican. The other options are the other persons of the same tense.
  7. clasifico — The yo present form of clasificar is clasifico. The other options are the other persons of the same tense.
  8. clasifica — The el present form of clasificar is clasifica. The other options are the other persons of the same tense.

Frequently asked questions

When do I use the present tense of clasificar?

Use the present tense of clasificar for habits, facts and what is happening now. For example: Yo clasifico los libros por tema. — "I classify the books by subject." The usage rules above give five situations with examples.

How is the present tense of clasificar formed?

Take the stem clasific- and add the present endings for -ar verbs. The full table is at the top of this page. Remember the spelling change: c becomes qu before e.

What is the difference between the present and the preterite of clasificar?

The present describes a habit or a present fact, while the preterite describes a finished action. Compare Yo clasifico los documentos en carpetas. with Yo clasifiqué los documentos en carpetas. — the verb is the same, but the time meaning changes.

How do I practise the present tense of clasificar?

Drill the six forms in the table above until you can say them without looking, then use the clasificar examples and quiz page for more sentences, and test yourself with the Clasificar conjugation page for the full picture across all tenses.

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