Drill the Spanish preterite alone, anchored to a completed moment like ayer or anoche, so its single-action meaning sticks before it meets the imperfect.
A learner writes "comía pizza anoche" meaning to say they ate pizza last night, and lands on the imperfect instead because the action happened in the past and past felt like past. Anoche marks one finished event, not a repeated habit, and Spanish keeps a separate tense for exactly that job. This generator drills the preterite by itself, away from the imperfect entirely, so the ending gets solid before the two tenses start competing for the same sentence. The verb is [VERB?] (a specific infinitive, or leave this blank and I'll choose one common enough to matter at [CEFR_LEVEL]). CEFR level is [CEFR_LEVEL:select:A1 (beginner),A2 (elementary),B1 (intermediate),B2 (upper intermediate),C1 (advanced)]. Subject pronouns to drill are [PRONOUN_SET:select:all six subject pronouns,singular only (yo/tú/él-ella-usted),plural only (nosotros/vosotros/ellos-ellas-ustedes),yo and él/ella/usted only]. Build [ITEM_COUNT:number:6-25] practice sentences. Anchor every sentence to a specific finished moment, ayer, anoche, el año pasado, la semana pasada, so the single-completed-action meaning stays attached to the form and doesn't drift into something ongoing. For regular verbs, -ar verbs take -é, -aste, -ó, -amos, -asteis, -aron, while -er and -ir verbs share -í, -iste, -ió, -imos, -isteis, -ieron. Mark the accented syllables clearly, since the accent on the yo and él/ella/usted forms is what separates them from other conjugations, not just spelling decoration. Flag one thing explicitly if [VERB] is -ar or -ir: the nosotros form of the preterite is spelled exactly like the present tense nosotros form, hablamos and vivimos work in both tenses, so a sentence using that pronoun needs the time marker doing the real work of showing which tense it is. If [VERB] happens to be one of the irregular preterite verbs, tener, decir, hacer, and similar verbs that build their own irregular stem and drop the accented endings entirely, note that plainly and keep this set to a verb from that list only when it was explicitly requested. That group of verbs is dense enough to need its own dedicated drilling, not a handful of items mixed into a regular-pattern set where the irregularity gets lost. Close by writing one sentence pair that shows the same verb used with two different time markers, so the pattern of marker-plus-preterite reads as one unit instead of two separate things to remember.
Range: 6 - 25
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Get Early AccessAnoche marks one finished event. Comía pizza anoche says something closer to 'I used to eat pizza last night,' which falls apart once you notice the mismatch, yet it's a mistake nearly every English-speaking learner makes early on since English doesn't force a choice between these two past forms the way Spanish does. Comí pizza anoche is the version that matches the time marker, and getting there takes drilling the preterite alone until the ending is automatic.
Set a [VERB] or leave it blank for one matched to your [CEFR_LEVEL], choose your [PRONOUN_SET], and this generator anchors every sentence to a specific completed moment, ayer, anoche, el año pasado, so the tense never floats free of a real reason for using it. Regular -ar verbs take -é, -aste, -ó, -amos, -asteis, -aron. Regular -er and -ir verbs share -í, -iste, -ió, -imos, -isteis, -ieron, and the accent marks on the yo and él/ella/usted forms carry real grammatical weight, not just spelling.
Once preterite forms are solid on their own, contrasting them against the imperfect is the next real test, since English speakers usually fail there first. The preterite vs imperfect generator covers that stage directly. For the full range of tenses on one verb, the verb conjugation generator covers present, future, and subjunctive too. Try either in the Dock Editor.
Run this in the Dock Editor, or paste it into ChatGPT, Claude, or Gemini, then enter a specific infinitive in [VERB], or leave it blank and get one matched to your [CEFR_LEVEL].
Choose [PRONOUN_SET] for all six forms, just the singular, just the plural, or yo and usted only.
Pick [ITEM_COUNT] to control how many time-marked practice sentences the drill builds.
If your verb belongs to the irregular preterite group, keep the set focused on that verb alone instead of mixing it with regular patterns.
Get the preterite ending solid on its own, ayer, anoche, and el año pasado attached to every sentence, before the imperfect enters the picture and the two tenses start competing.
Build a focused preterite-only worksheet for the week a class first meets the tense, without pulling in imperfect forms students haven't studied yet.
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