Forming the Spanish Imperfect Subjunctive Start with the third-person plural form of the preterit. Drop the -ron ending to establish the verb’s imperfect subjunctive base. This verb base is used for all verbs whether they’re regular, irregular, stem-changing, or spelling-changing verbs. Add the common endings from one of the lists that follow. Click to see full answer. Also question is, how do you form the subjunctive in Spanish?For most verbs, the present subjunctive is formed by dropping the -o ending from the first person singular yo of the present indicative and adding the present subjunctive endings. The present subjunctive endings are different for –ar verbs (–e, -es, -e, -emos, -en) and –er/-ir verbs (–a, -as, -a, -amos, -an).Furthermore, how do you form the pluperfect subjunctive in Spanish? Formation. The pluperfect subjunctive (pluscuamperfecto subjuntivo) is formed with: the past (or imperfect) subjunctive of the auxiliary verb haber + the past participle of the main verb. Ella hubiera sido mejor presidenta yo creo que la otra muchacha. Herein, is there a past subjunctive in Spanish? The imperfect subjunctive tense is very often used in Spanish. This tense is also known as the Spanish past subjunctive, but its real name is the preterite imperfect tense of the subjunctive mood. The word “preterite” means past and the word “subjunctive” denotes mood. The subjunctive does not express time.What is subjunctive used for?The subjunctive mood is used to talk about desires, doubts, wishes, conjectures, and possibilities. The indicative mood is used to talk about facts and other statements that are believed to be true and concrete. The imperative mood is used to give commands.