Non-finite forms
Infinitivo and Gerundio
| Form | Spanish | Use |
|---|---|---|
| Infinitivo | investigar | Dictionary form and base form for many compound structures. |
| Gerundio | investigando | Used with estar for progressive forms, for example estar investigando. |
Spanish verb conjugation
Investigar conjugation
investigar is a regular Spanish -AR verb meaning investigate / research. In the present tense: yo investigo, tú investigas, él/ella investiga, nosotros investigamos, vosotros investigáis, ellos investigan. Full conjugation across 18 tenses below.
Rank #274-ARRegular18 tense tables
At a glance
- Infinitive
- investigar
- Gerundio
- investigando
- Meaning
- investigate / research
- Pattern
- Regular
- Difficulty
- Level 2
Conjugation tables
Study tense
Study tense
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Study tense
Investigar across the MuyVerbs tense system
Study present continuous
Presente
Present
| Pronoun | Form | Context |
|---|---|---|
| yo | investigo | Yo investigo un caso difícil.I investigate a difficult case. |
| tú | investigas | Tú investigas los detalles con paciencia.You investigate the details patiently. |
| él | investiga | Él investiga una teoría nueva.He researches a new theory. |
| nosotros | investigamos | Nosotros investigamos el origen del problema.We investigate the origin of the problem. |
| vosotros | investigáis | Vosotros investigáis cada pista.You investigate each clue. |
| ellos | investigan | Ellos investigan fraudes financieros.They investigate financial fraud. |
Pretérito Perfecto
Present Perfect
| Pronoun | Form | Context |
|---|---|---|
| yo | he investigado | Yo he investigado un caso difícil hoy.I have investigated a difficult case today. |
| tú | has investigado | Tú has investigado los detalles ya.You have investigated the details already. |
| él | ha investigado | Él ha investigado una teoría nueva.He has researched a new theory. |
| nosotros | hemos investigado | Nosotros hemos investigado el origen del problema.We have investigated the origin of the problem. |
| vosotros | habéis investigado | Vosotros habéis investigado cada pista.You have investigated each clue. |
| ellos | han investigado | Ellos han investigado fraudes financieros.They have investigated financial fraud. |
Pretérito Indefinido
Preterite
| Pronoun | Form | Context |
|---|---|---|
| yo | investigué | Ayer yo investigué un caso difícil.Yesterday I investigated a difficult case. |
| tú | investigaste | Tú investigaste los detalles con paciencia.You investigated the details patiently. |
| él | investigó | Él investigó una teoría nueva.He researched a new theory. |
| nosotros | investigamos | Nosotros investigamos el origen del problema.We investigated the origin of the problem. |
| vosotros | investigasteis | Vosotros investigasteis cada pista.You investigated each clue. |
| ellos | investigaron | Ellos investigaron fraudes financieros.They investigated financial fraud. |
Pretérito Imperfecto
Imperfect
| Pronoun | Form | Context |
|---|---|---|
| yo | investigaba | Yo investigaba casos parecidos antes.I used to investigate similar cases before. |
| tú | investigabas | Tú investigabas los detalles siempre.You used to investigate the details always. |
| él | investigaba | Él investigaba teorías nuevas a menudo.He used to research new theories often. |
| nosotros | investigábamos | Nosotros investigábamos el origen de todo.We used to investigate the origin of everything. |
| vosotros | investigabais | Vosotros investigabais cada pista con cuidado.You used to investigate each clue carefully. |
| ellos | investigaban | Ellos investigaban fraudes financieros.They used to investigate financial fraud. |
Pretérito Pluscuamperfecto
Past Perfect
| Pronoun | Form | Context |
|---|---|---|
| yo | había investigado | Yo había investigado ese caso antes.I had investigated that case before. |
| tú | habías investigado | Tú habías investigado los detalles ya.You had investigated the details already. |
| él | había investigado | Él había investigado la teoría previamente.He had researched the theory previously. |
| nosotros | habíamos investigado | Nosotros habíamos investigado el origen antes.We had investigated the origin before. |
| vosotros | habíais investigado | Vosotros habíais investigado cada pista esa mañana.You had investigated each clue that morning. |
| ellos | habían investigado | Ellos habían investigado esos fraudes antes.They had investigated those frauds before. |
Pretérito Anterior
Preterite Anterior
| Pronoun | Form | Context |
|---|---|---|
| yo | hube investigado | Cuando yo hube investigado el caso, entendí más.When I had investigated the case, I understood more. |
| tú | hubiste investigado | En cuanto tú hubiste investigado los detalles, hablaste.As soon as you had investigated the details, you spoke. |
| él | hubo investigado | Después de que él hubo investigado la teoría, escribió un informe.After he had researched the theory, he wrote a report. |
| nosotros | hubimos investigado | Apenas nosotros hubimos investigado el origen, vimos la verdad.As soon as we had investigated the origin, we saw the truth. |
| vosotros | hubisteis investigado | Una vez que vosotros hubisteis investigado cada pista, supisteis quién fue.Once you had investigated each clue, you knew who it was. |
| ellos | hubieron investigado | Cuando ellos hubieron investigado el fraude, hubo detenciones.When they had investigated the fraud, there were arrests. |
Futuro
Future
| Pronoun | Form | Context |
|---|---|---|
| yo | investigaré | Yo investigaré ese caso mañana.I will investigate that case tomorrow. |
| tú | investigarás | Tú investigarás los detalles primero.You will investigate the details first. |
| él | investigará | Él investigará una teoría nueva.He will research a new theory. |
| nosotros | investigaremos | Nosotros investigaremos el origen del problema.We will investigate the origin of the problem. |
| vosotros | investigaréis | Vosotros investigaréis cada pista.You will investigate each clue. |
| ellos | investigarán | Ellos investigarán el fraude.They will investigate the fraud. |
Futuro Perfecto
Future Perfect
| Pronoun | Form | Context |
|---|---|---|
| yo | habré investigado | Para entonces yo habré investigado el caso.By then I will have investigated the case. |
| tú | habrás investigado | Tú habrás investigado los detalles ya.You will have investigated the details already. |
| él | habrá investigado | Él habrá investigado la teoría para esa hora.He will have researched the theory by that time. |
| nosotros | habremos investigado | Nosotros habremos investigado el origen antes.We will have investigated the origin beforehand. |
| vosotros | habréis investigado | Vosotros habréis investigado cada pista para entonces.You will have investigated each clue by then. |
| ellos | habrán investigado | Ellos habrán investigado el fraude ya.They will have investigated the fraud already. |
Condicional
Conditional
| Pronoun | Form | Context |
|---|---|---|
| yo | investigaría | Yo investigaría ese caso con cuidado.I would investigate that case carefully. |
| tú | investigarías | Tú investigarías los detalles sin prisa.You would investigate the details without hurry. |
| él | investigaría | Él investigaría una teoría nueva.He would research a new theory. |
| nosotros | investigaríamos | Nosotros investigaríamos el origen del problema.We would investigate the origin of the problem. |
| vosotros | investigaríais | Vosotros investigaríais cada pista mejor.You would investigate each clue better. |
| ellos | investigarían | Ellos investigarían el fraude hasta el final.They would investigate the fraud until the end. |
Condicional Perfecto
Conditional Perfect
| Pronoun | Form | Context |
|---|---|---|
| yo | habría investigado | Yo habría investigado ese caso con cuidado.I would have investigated that case carefully. |
| tú | habrías investigado | Tú habrías investigado los detalles sin prisa.You would have investigated the details without hurry. |
| él | habría investigado | Él habría investigado una teoría nueva.He would have researched a new theory. |
| nosotros | habríamos investigado | Nosotros habríamos investigado el origen del problema.We would have investigated the origin of the problem. |
| vosotros | habríais investigado | Vosotros habríais investigado cada pista mejor.You would have investigated each clue better. |
| ellos | habrían investigado | Ellos habrían investigado el fraude hasta el final.They would have investigated the fraud until the end. |
Subjuntivo Presente
Present Subjunctive
| Pronoun | Form | Context |
|---|---|---|
| yo | investigue | Es bueno que yo investigue ese caso.It is good that I investigate that case. |
| tú | investigues | Quiero que tú investigues los detalles.I want you to investigate the details. |
| él | investigue | Es importante que él investigue la teoría.It is important that he research the theory. |
| nosotros | investiguemos | Deseo que nosotros investiguemos el origen.I wish that we investigate the origin. |
| vosotros | investiguéis | Es mejor que vosotros investiguéis cada pista.It is better that you investigate each clue. |
| ellos | investiguen | Temo que ellos no investiguen el fraude bien.I fear that they may not investigate the fraud well. |
Subjuntivo Pretérito Perfecto
Present Perfect Subjunctive
| Pronoun | Form | Context |
|---|---|---|
| yo | haya investigado | Dudo que yo haya investigado ese caso ya.I doubt that I have investigated that case already. |
| tú | hayas investigado | No creo que tú hayas investigado los detalles todavía.I do not think that you have investigated the details yet. |
| él | haya investigado | Es posible que él haya investigado la teoría.It is possible that he has researched the theory. |
| nosotros | hayamos investigado | Es probable que nosotros hayamos investigado el origen.It is likely that we have investigated the origin. |
| vosotros | hayáis investigado | No parece que vosotros hayáis investigado cada pista aún.It does not seem that you have investigated each clue yet. |
| ellos | hayan investigado | Puede que ellos hayan investigado el fraude.They may have investigated the fraud. |
Subjuntivo Pretérito Imperfecto
Imperfect Subjunctive
| Pronoun | Form | Context |
|---|---|---|
| yo | investigara | Si yo investigara ese caso, encontraría algo.If I investigated that case, I would find something. |
| tú | investigaras | Si tú investigaras los detalles, entenderías más.If you investigated the details, you would understand more. |
| él | investigara | Si él investigara la teoría, la mejoraría.If he researched the theory, he would improve it. |
| nosotros | investigáramos | Si nosotros investigáramos el origen, resolveríamos el problema.If we investigated the origin, we would solve the problem. |
| vosotros | investigarais | Si vosotros investigarais cada pista, lo descubriríais.If you investigated each clue, you would discover it. |
| ellos | investigaran | Si ellos investigaran el fraude, hallarían la verdad.If they investigated the fraud, they would find the truth. |
Subjuntivo Pretérito Pluscuamperfecto
Past Perfect Subjunctive
| Pronoun | Form | Context |
|---|---|---|
| yo | hubiera investigado | Si yo hubiera investigado ese caso, habría encontrado algo.If I had investigated that case, I would have found something. |
| tú | hubieras investigado | Si tú hubieras investigado los detalles, habrías entendido más.If you had investigated the details, you would have understood more. |
| él | hubiera investigado | Si él hubiera investigado la teoría, la habría mejorado.If he had researched the theory, he would have improved it. |
| nosotros | hubiéramos investigado | Si nosotros hubiéramos investigado el origen, habríamos resuelto el problema.If we had investigated the origin, we would have solved the problem. |
| vosotros | hubierais investigado | Si vosotros hubierais investigado cada pista, lo habríais descubierto.If you had investigated each clue, you would have discovered it. |
| ellos | hubieran investigado | Si ellos hubieran investigado el fraude, habrían hallado la verdad.If they had investigated the fraud, they would have found the truth. |
Subjuntivo Futuro
Future Subjunctive
| Pronoun | Form | Context |
|---|---|---|
| yo | investigare | Si algún día yo investigare ese caso, te contaré todo.If someday I should investigate that case, I will tell you everything. |
| tú | investigares | Si tú investigares los detalles, lo entenderás.If you should investigate the details, you will understand it. |
| él | investigare | Si él investigare la teoría, aprenderá mucho.If he should research the theory, he will learn a lot. |
| nosotros | investigáremos | Si nosotros investigáremos el origen, cambiaremos el plan.If we should investigate the origin, we will change the plan. |
| vosotros | investigareis | Si vosotros investigareis cada pista, llegaréis lejos.If you should investigate each clue, you will go far. |
| ellos | investigaren | Si ellos investigaren el fraude, habrá justicia.If they should investigate the fraud, there will be justice. |
Subjuntivo Futuro Perfecto
Future Perfect Subjunctive
| Pronoun | Form | Context |
|---|---|---|
| yo | hubiere investigado | Cuando yo hubiere investigado ese caso, te llamaré.When I shall have investigated that case, I will call you. |
| tú | hubieres investigado | Cuando tú hubieres investigado los detalles, lo verás claro.When you shall have investigated the details, you will see it clearly. |
| él | hubiere investigado | Cuando él hubiere investigado la teoría, escribirá más.When he shall have researched the theory, he will write more. |
| nosotros | hubiéremos investigado | Cuando nosotros hubiéremos investigado el origen, lo sabremos todo.When we shall have investigated the origin, we will know everything. |
| vosotros | hubiereis investigado | Cuando vosotros hubiereis investigado cada pista, hablaréis.When you shall have investigated each clue, you will speak. |
| ellos | hubieren investigado | Cuando ellos hubieren investigado el fraude, habrá respuestas.When they shall have investigated the fraud, there will be answers. |
Imperativo Afirmativo
Affirmative Imperative
| Pronoun | Form | Context |
|---|---|---|
| yo | - | — |
| tú | investiga | Tú, investiga ese caso con calma.You, investigate that case calmly. |
| él | investigue | Que él investigue los detalles.Let him investigate the details. |
| nosotros | investiguemos | investiguemos el origen del problema.Let us investigate the origin of the problem. |
| vosotros | investigad | Vosotros, investigad cada pista.You, investigate each clue. |
| ellos | investiguen | Que ellos investiguen el fraude a fondo.Let them investigate the fraud thoroughly. |
Imperativo Negativo
Negative Imperative
| Pronoun | Form | Context |
|---|---|---|
| yo | - | — |
| tú | no investigues | No no investigues sin pruebas.Do not investigate without evidence. |
| él | no investigue | Que él no no investigue por curiosidad vacía.Let him not investigate out of empty curiosity. |
| nosotros | no investiguemos | No no investiguemos rumores falsos.Let us not investigate false rumors. |
| vosotros | no investiguéis | No no investiguéis a nadie sin razón.Do not investigate anyone without reason. |
| ellos | no investiguen | Que ellos no no investiguen el caso a medias.Let them not investigate the case halfway. |
Free web drill
Practice investigar
1 / 1
Presente•yo
Yo ___ un caso difícil.
I investigate a difficult case.
Need grammar help?How to form Presente
Use Presente for facts, habits, current states, and regular actions.
Formation
- 1Remove the infinitive ending: -ar, -er, or -ir.
- 2Add the present endings for the subject.
- 3Watch high-frequency irregulars like ser, estar, ir, tener, hacer, and decir.
Pattern
-ar: o, as, a, amos, áis, an-er: o, es, e, emos, éis, en-ir: o, es, e, imos, ís, en
Examples
hablar -> yo hablocomer -> él comevivir -> vosotros vivís
Presente is the base system. Master the endings first, then handle irregular yo forms and stem changes.
Grammar to master with investigar
Related Spanish grammar topics
Concepts that come up every time you conjugate investigar. Each is a short, focused guide.
Common questions
Investigar conjugation — frequently asked
Short, direct answers to what learners search most about investigar.
- What does 'investigar' mean in English?
- In Spanish, 'investigar' means to investigate / research. It is a regular -AR verb used across all 18 standard Spanish tenses.
- Is investigar an irregular verb in Spanish?
- Investigar is a regular -AR verb. Its endings follow the standard pattern in every tense without stem or root changes.
- How do you conjugate investigar in the present tense?
- Present tense (Presente) of investigar: yo investigo, tú investigas, él/ella/usted investiga, nosotros investigamos, vosotros investigáis, ellos/ellas/ustedes investigan.
- How do you conjugate investigar in the preterite?
- Preterite (Pretérito Indefinido) of investigar: yo investigué, tú investigaste, él/ella/usted investigó, nosotros investigamos, vosotros investigasteis, ellos/ellas/ustedes investigaron. This tense expresses completed past actions at a defined point in time.
- What is the imperfect tense of investigar?
- Imperfect (Pretérito Imperfecto) of investigar: yo investigaba, tú investigabas, él/ella/usted investigaba, nosotros investigábamos, vosotros investigabais, ellos/ellas/ustedes investigaban. The imperfect describes past habits, ongoing actions, and background states.
- What is the past participle of investigar?
- The past participle of investigar is 'investigado'. It is used to form compound tenses with the auxiliary verb haber — for example, 'he investigado' (I have investigate / researched), 'has investigado', 'ha investigado'.
- What is the gerundio (present participle) of investigar?
- The gerundio of investigar is 'investigando'. It pairs with estar to form the present continuous (estoy investigando) and other progressive tenses, indicating an action in progress.
Related verbs
Continue with verbs that share the same ending and difficulty band.