Final answer:
The él/ella/usted form for -er/-ir regular verbs in the preterite tense in Spanish is formed by adding the corresponding preterite ending to the verb stem.
Step-by-step explanation:
The él/ella/usted form for -er/-ir regular verbs in the preterite tense in Spanish is formed by adding the corresponding preterite ending to the verb stem. For -er verbs, the ending is -ió and for -ir verbs, the ending is -ió. Here are some examples:
- Comer (to eat) - él/ella/usted comió
- Escribir (to write) - él/ella/usted escribió
- Salir (to leave) - él/ella/usted salió
It is important to note that there are some irregular verbs in the preterite tense that do not follow this pattern, so it's always a good idea to consult a verb conjugation chart to confirm the correct form.