Diagnosticar means ‘to diagnose’. It is a regular -ar verb with a spelling change (c becomes qu before e): diagnostico (present), diagnostiqué (preterite), diagnosticado (past participle), diagnosticando (gerund).
Diagnosticar in use
Le diagnosticaron diabetes a los doce añosHe was diagnosed with diabetes at twelve
La médica le diagnosticó una alergiaThe doctor diagnosed her with an allergy
Esta máquina diagnostica averías del cocheThis machine diagnoses car faults
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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