Drill the Spanish imperfect for ongoing, habitual, and background past action, grounded in the fact that only ser, ir, and ver break its predictable pattern.
Only three Spanish verbs refuse to follow the regular imperfect pattern: ser, ir, and ver. Every other verb, no matter how irregular it gets in the present or preterite, snaps back into a fully predictable -aba or -ía ending here. That's rare enough in Spanish grammar that most learners never get told, so they keep bracing for irregularity that almost never shows up in this particular tense. This generator drills the pattern until that predictability itself becomes the thing a learner trusts. The verb is [VERB?] (a specific infinitive, or leave this blank and I'll pick one that fits [CEFR_LEVEL]). 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 nosotros only]. CEFR level is [CEFR_LEVEL:select:A1 (beginner),A2 (elementary),B1 (intermediate),B2 (upper intermediate),C1 (advanced)]. Build [ITEM_COUNT:number:6-25] practice sentences. Ground every sentence in ongoing, habitual, or background past action, the meaning English speakers reach for with "used to" or "was doing." Cuando era niño, jugaba en el parque todos los días describes a repeated childhood habit, not one finished trip to the park, and that's the sense the imperfect exists to carry. Regular -ar verbs take -aba, -abas, -aba, -ábamos, -abais, -aban, with the accent on the nosotros form never optional. Regular -er and -ir verbs share -ía, -ías, -ía, -íamos, -íais, -ían. If [VERB] is ser, ir, or ver, use its real irregular forms instead of the regular pattern, era for ser, iba for ir, and veía for ver, note that ver keeps the e from its stem where a fully regular -er verb wouldn't, and that's the one place it strays. For every other verb requested, including ones that are irregular in the present tense like tener or querer, confirm the regular imperfect pattern still applies before building the drill, since a learner who assumes present-tense irregularity carries over is guessing wrong for no reason. Close with one sentence that pairs a background imperfect action with an interrupting completed event, mientras leía, sonó el teléfono, so the tense's real job of setting a scene shows up at least once instead of staying an abstract rule.
Range: 6 - 25
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Get Early AccessSer, ir, and ver are the only three Spanish verbs that don't follow the regular imperfect pattern. Every other irregular verb, tener, querer, and the rest, becomes perfectly regular the moment it moves into the imperfect. That's the opposite of what most learners expect from Spanish irregularity, and knowing it upfront turns a tense that looks intimidating into one of the more mechanical ones to drill.
Name a [VERB] or leave it blank for a pick matched to [CEFR_LEVEL], set [PRONOUN_SET], and this generator anchors every sentence in ongoing, habitual, or background past action, the sense English carries with 'used to' or 'was doing.' Cuando era niño, jugaba en el parque todos los días is a repeated habit, not a single trip, and that distinction is the entire point of the tense. Regular -ar verbs take -aba through -aban, with an accent on the nosotros form that's never optional. Regular -er and -ir verbs share -ía through -ían.
Once imperfect forms are solid, the real test is choosing between imperfect and the preterite in the same sentence, which the preterite vs imperfect generator drills directly. For preterite forms on their own first, try the preterite generator. Build either set in the Dock Editor or paste it into any AI assistant.
Take this to ChatGPT, Claude, Gemini, or the Dock Editor, then enter [VERB], or leave it blank and get a verb matched to your [CEFR_LEVEL].
Set [PRONOUN_SET] to drill all six forms or narrow it to the ones your lesson covers.
Pick [ITEM_COUNT] to control how many habitual or background-action sentences the drill builds.
If your verb is ser, ir, or ver, confirm the drill used its real irregular forms instead of the regular pattern.
Learn that imperfect irregularity is rare, just three verbs, so the tense stops feeling like another wall of exceptions to memorize.
Practice background and habitual past action, cuando era niño or todos los días, the kind of sentence that narrates instead of just reporting an event.
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