Colaborar means ‘to collaborate’. It is a regular -ar verb: colaboro (present), colaboré (preterite), colaborado (past participle), colaborando (gerund).
Colaborar in use
Colaboramos con varias universidadesWe collaborate with several universities
¿Te gustaría colaborar con nosotros?Would you like to collaborate with us?
Colaborar en un proyectoTo collaborate on a project
On this pageIndicative
Indicative
Statements of fact, certainty and objective reality
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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