Detectar in the Present Tense

Introduction

The present tense of detectar — «to detect» — is the form you will reach for most often. It talks about habits, facts and what is happening right now, and it is the first tense to master for this verb. detectar is a regular -ar verb verb, so the present follows the -ar endings. On this page you will find the full present-tense table, how the forms are built, five usage rules with examples, a comparison with the preterite, more example sentences, the mistakes learners make in this tense, an eight-question quiz and answers to common questions. A good first sentence is «Yo detecto todos los días» — I detect every day.

Detectar in the Present Tense — full table

Person Form
yo detecto
tú detectas
él/ella/Ud. detecta
nosotros/as detectamos
vosotros/as detectáis
ellos/ellas/Uds. detectan

Gerund: detectando · Past participle: detectado

How the present tense of detectar is formed

Take the stem detect — the infinitive detectar without its -ar ending — and add the present endings. The table below shows the build for every person, using the actual stem of each form:

Person Stem Ending Form
yo detect -o detecto
tú detect -as detectas
él/ella/Ud. detect -a detecta
nosotros/as detect -amos detectamos
vosotros/as detect -áis detectáis
ellos/ellas/Uds. detect -an detectan

The present is the only tense where the yo form ends in -o for all three verb classes, which makes it a useful anchor: if you know detecto, you can build the rest of the table from the stem and the endings above.

When to use the present tense of detectar

1. Daily routines and habits

The most common use: things you do regularly. Time words like todos los días, siempre and a veces are the giveaway.

Yo detecto todos los días. — I detect every day.

2. General truths and facts

Use the present for things that are true in general, not just today. No time expression is needed — the statement stands on its own.

Él detecta con mi familia. — He detects with my family.

3. What is happening right now

For an action in progress, the present works on its own in Spanish, and you can also use estar + the gerund detectando for emphasis. Both are correct; the gerund version stresses that it is happening this very moment.

Nosotros detectamos por la mañana. — We detect in the morning.

4. Scheduled near-future plans

Spanish often uses the present for a fixed plan in the near future, where English would say «going to». A time expression such as mañana or la semana que viene makes the future meaning clear.

Tú detectas en el trabajo. — You detect at work.

5. Narrating and commenting

The present is the tense of live commentary and of stories told as if they were happening now. It keeps the listener in the moment, and it is the tense of instructions and explanations.

Ellos detectan a veces. — They detect sometimes.

Present Tense vs Preterite: how to choose

The present and the preterite answer different questions. The present says what happens in general or what is happening now; the preterite says what happened once and is over. Compare the pairs below — same verb, different time frame:

  • Present: Yo detecto todos los días. — I detect every day.

  • Preterite: Ayer yo detecté por la tarde. — Yesterday I detected in the afternoon.

  • A routine against a single finished event. The present describes the habit; the preterite reports the one time it happened.

  • Present: Él detecta por la mañana. — He detects in the morning.

  • Preterite: Ayer él detectó por la tarde. — Yesterday He detected in the afternoon.

  • What happens in the morning in general, against what happened yesterday afternoon. The time expression decides the tense.

  • Present: Nosotros detectamos con mi familia. — We detect with my family.

  • Preterite: La semana pasada nosotros detectamos dos veces. — Last week We detected twice.

  • A shared habit against a shared finished event. If the action repeats, use the present; if it happened once and ended, use the preterite.

Example sentences: detectar in the present

  1. Yo detecto todos los días. — I detect every day.
  2. Tú detectas en el trabajo. — You detect at work.
  3. Él detecta con mi familia. — He detects with my family.
  4. Nosotros detectamos por la mañana. — We detect in the morning.
  5. Vosotros detectáis cuando hay tiempo. — You detect when there is time.
  6. Ellos detectan a veces. — They detect sometimes.
  7. Yo detecto en el trabajo. — I detect at work.
  8. Él detecta todos los días. — He detects every day.

Common mistakes with detectar in the present

1. Forgetting the accent on the vosotros form

Wrong: Vosotros detectais.

Right: Vosotros detectáis.

The vosotros form detectáis carries a written accent on the ending. Without it the word is misspelled, and in speech the stress falls in the wrong place.

2. Using the present for a finished event

Wrong: Ayer yo detecto.

Right: Ayer yo detecté.

Ayer belongs with the preterite. The present detecto talks about now or about a habit; a finished yesterday needs detecté.

3. Using the yo form for every person

Wrong: Ellos detecto.

Right: Ellos detectan.

Each person has its own form: ellos take detectan, not the yo form detecto. The -n ending on detectan is what marks the third-person plural.

4. Using the present instead of the progressive

Wrong: Estoy detecto.

Right: Estoy detectando.

After estar, Spanish needs the gerund: estoy detectando. The conjugated present detecto never follows estar.

Quiz: detectar in the present

Test yourself on the present tense of detectar. Choose the correct answer, then check the key below.

1. What is the vosotros/as form of detectar in the present indicative?

- (a) detectáis
- (b) detecto
- (c) detectas
- (d) detecta

2. What is the ellos/ellas/Uds. form of detectar in the present indicative?

- (a) detectan
- (b) detecta
- (c) detectas
- (d) detecto

3. What is the yo form of detectar in the present indicative?

- (a) detectas
- (b) detectamos
- (c) detecta
- (d) detecto

4. What is the tú form of detectar in the present indicative?

- (a) detecta
- (b) detecto
- (c) detectas
- (d) detectamos

5. What is the él/ella/Ud. form of detectar in the present indicative?

- (a) detecto
- (b) detecta
- (c) detectas
- (d) detectamos

6. What is the nosotros/as form of detectar in the present indicative?

- (a) detecta
- (b) detectas
- (c) detecto
- (d) detectamos

7. What is the gerund of detectar?

- (a) detectar
- (b) detectado
- (c) detecto
- (d) detectando

8. What is the past participle of detectar?

- (a) detecté
- (b) detectar
- (c) detectado
- (d) detectando

Answer key

1. (a) — In the present indicative, the vosotros/as form of detectar is detectáis. The other options are the same tense but different persons. 2. (a) — In the present indicative, the ellos/ellas/Uds. form of detectar is detectan. The other options are the same tense but different persons. 3. (d) — In the present indicative, the yo form of detectar is detecto. The other options are the same tense but different persons. 4. (c) — In the present indicative, the tú form of detectar is detectas. The other options are the same tense but different persons. 5. (b) — In the present indicative, the él/ella/Ud. form of detectar is detecta. The other options are the same tense but different persons. 6. (d) — In the present indicative, the nosotros/as form of detectar is detectamos. The other options are the same tense but different persons. 7. (d) — The gerund of detectar is detectando. It is used with estar for the progressive: «Estoy detectando». 8. (c) — The past participle of detectar is detectado. It follows haber in all the perfect tenses: «he detectado».

Frequently asked questions

Is detectar regular in the present?

Yes — detectar is regular in the present. The stem detect never changes and the endings are -o, -as, -a, -amos, -áis, -an for -ar verbs (with the matching sets for -er and -ir verbs).

What is the yo form of detectar in the present?

It is detecto. Use it for talking about yourself right now.

How is the present different from the preterite for detectar?

The present (detecto) describes habits and what is happening now; the preterite (detecté) reports a single finished event. «Yo detecto todos los días» is a habit, while «Ayer yo detecté» is one event that ended yesterday.

Can I use the present of detectar with estar and the gerund?

Yes — «Estoy detectando» means «I am detecting right now», with the emphasis on the action in progress. The plain present «Yo detecto» is also correct for what is happening now; the gerund version simply stresses the moment.

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