Build Regular er and ir Completed-Past Forms

Supplied materials

• Paper or a browser scratch area; no audio recording, account or private information is needed.
• Use the regular er/ir preterite for the stated speaker. Original sentence: “yo ___”. Infinitive: comer (eat); time/context: one explicitly completed past event. Choose only the missing verb. Candidate answers: (A) comimos (B) comiste (C) comió (D) comí.
• Use the regular er/ir preterite for the stated speaker. Original sentence: “tú ___”. Infinitive: vivir (live); time/context: one explicitly completed past event. Choose only the missing verb. Candidate answers: (A) vivimos (B) viviste (C) vivió (D) viví.

Learn the idea

The preterite presents a supplied past event as bounded or completed in the narrative. Forms depend on conjugation class and subject; time words help interpret the story but do not mechanically force one tense in every context. Regular er and ir verbs share the practiced preterite endings í, iste, ió, imos and ieron. The shared past pattern differs from some present endings, so an infinitive’s class alone does not identify its tense.

Remove the infinitive’s er or ir and add the requested subject ending. Comer gives comí; vivir gives vivió for the supplied third-person event. Read the stated completed-past meaning before using a present-looking form.

Some verbs have spelling or stem irregularities in this tense; the task uses only the supplied regular models. Preserve accents in í and ió. Nosotros vivimos can match a present spelling, so the explicit completed-past context remains important.

1. Copy the supplied example and underline its speaker, noun, time cue or evidence words.
2. Apply the shown language rule; keep any required ending, accent or paired punctuation.
3. Solve the changed independent check, then explain why one offered alternative fails.
4. Complete all three new practice cases and use the model to correct the precise word or meaning.

Check your reasoning

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Take it further

A third-person label says “ella escribió”. Convert it to the person speaking about themself, yo, preserving escribir (write) and the regular er/ir preterite, context one explicitly completed past event. Which replacement verb is needed? Candidate answers: (A) escribimos (B) escribiste (C) escribió (D) escribí. Expected result: escribí. The supplied subject yo needs the í ending in this regular er/ir preterite pattern. Remove ir from escribir, leaving escrib, then add í: escribí. The other offered forms belong to different subjects.

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