diagnosticar Imperfect Conjugation
diagnosticar — to diagnose
The imperfect is regular: diagnosticaba, diagnosticabas, diagnosticaba, diagnosticábamos, diagnosticabais, diagnosticaban.
diagnosticar Imperfect Forms
When to Use the Imperfect
Use this for ongoing processes of diagnosis in the past or to describe a doctor's habitual diagnostic routine.
Notes on diagnosticar in the Imperfect
Diagnosticar follows the standard -aba pattern for -ar verbs in the imperfect.
Example Sentences
Antes, los médicos diagnosticaban sin estas máquinas.
Before, doctors used to diagnose without these machines.
ellos/ellas/ustedes
Yo diagnosticaba la avería cuando se fue la luz.
I was diagnosing the breakdown when the power went out.
yo
Mi abuelo siempre diagnosticaba bien los problemas del jardín.
My grandfather always diagnosed garden problems well.
él/ella/usted
Common Mistakes
Mistake: diagnosticabamos
Correct: diagnosticábamos
Why: The 'nosotros' form of the imperfect always requires an accent on the first 'a' of the ending.
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Related Tenses
Present
yo: diagnostico
The present tense is completely regular: diagnostico, diagnosticas, diagnostica, diagnosticamos, diagnosticáis, diagnostican.
Preterite
yo: diagnostiqué
Diagnosticar is regular except for the 'yo' form, which changes to diagnostiqué.
Future
yo: diagnosticaré
The future tense is regular: add endings to the infinitive (diagnosticaré, diagnosticarás, etc.).
Conditional
yo: diagnosticaría
The conditional is regular: add -ía endings to the infinitive (diagnosticaría, diagnosticarías, etc.).
Present Subjunctive
yo: diagnostique
Diagnosticar requires a spelling change from 'c' to 'qu' in all forms: diagnostique, diagnostiques, diagnostique, etc.
Imperfect Subjunctive
yo: diagnosticara
The imperfect subjunctive follows the -ra pattern: diagnosticara, diagnosticaras, diagnosticara, etc.
Affirmative Imperative
yo: diagnostica
The imperative uses 'diagnostica' (tú) and 'diagnostique' (usted/ustedes).
Negative Imperative
yo: no diagnostiques
The negative imperative always uses the present subjunctive forms: no diagnostiques, no diagnostique, etc.