Requerir means ‘to require’. It is a stem-changing -ir verb (e → ie): requiero (present), requerí and requirió (preterite), requerido (past participle), requiriendo (gerund).
Requerir in use
Este trabajo requiere mucha pacienciaThis job requires a lot of patience
Se requieren conocimientos técnicosTechnical knowledge is required
Requerir atenciónTo require attention
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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