Big Idea
Preterite vs. Imperfect in Spanish is about choosing the word that matches the thought.
Verbs are the engine of a sentence. Start with the moment in time, then choose the form that carries that moment.
Examples
Example 1
Ayer llamé a mi mamá.
Yesterday I called my mom.
Notice llamé: A completed event.
Example 2
Cuando era niño, jugaba afuera.
When I was a child, I used to play outside.
Notice jugaba: A habit or background.
Example 3
Caminaba cuando empezó a llover.
I was walking when it started to rain.
Notice Caminaba: Scene plus interruption.
Step 1:Do not ask which English word matches.Step 2:Ask what the speaker means: identity, state, destination, cause, request, or result.Step 3:Choose the Spanish word that carries that meaning.
Watch for this: The trap is asking which tense means past. Both do. Ask whether you are pointing to a completed event or painting the background.
With Preterite vs. Imperfect in Spanish, begin with meaning and time. The ending is there to serve the sentence.

