Investigar means ‘to investigate’. It is a regular -ar verb with a spelling change (g becomes gu before e): investigo (present), investigué (preterite), investigado (past participle), investigando (gerund).
Investigar in use
Están investigando el accidenteThey are investigating the accident
Investigó durante añosHe researched for years
Investigar un casoTo investigate a case
On this pageIndicative
Indicative
Statements of fact, certainty and objective reality
ending the ending you addstem letters that changehaber auxiliary
The other perfect tenses (haber + past participle) and the past subjunctive
The imperfect subjunctive has two forms: -ra (more common in speech) and -se (more formal; still heard in speech in Spain, mainly written in Latin America). Both are equally correct and interchangeable.
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