¡Hola! Ready to master the past tense in Spanish? Today, we will explore how some common verbs change completely when we talk about yesterday.
In Spanish, we use the preterite tense to talk about actions that started and finished in the past. While regular verbs follow a predictable pattern, irregular verbs like 'tener' (to have) and 'ir' (to go) completely change their spelling.

Let us look at the verb 'tener' (to have) — pronounced teh-NEHR. In the past tense, its stem changes from 'ten-' to 'tuv-', giving us forms like 'yo tuve' (I had) and 'tú tuviste' (you had). Notice how the letters shift to create this new past-tense stem.
Now look at 'ir' (to go) — pronounced EER. This verb is a total rebel because it changes completely to 'fui' (I went) and 'fuiste' (you went). It does not look anything like 'ir', so we must memorize this unique transformation.
Analyze the sentence: 'Ayer yo fui al supermercado y tuve que comprar leche' (Yesterday I went to the supermarket and had to buy milk). Identify the irregular verbs in the preterite tense, explain their infinitive forms, and justify why they are irregular.
- Step 1: Locate the action words in the sentence. The verbs are 'fui' (went) and 'tuve' (had).
- Step 2: Identify the infinitive (original) form for each verb. 'Fui' comes from the verb 'ir' (to go). 'Tuve' comes from the verb 'tener' (to have).
- Step 3: Analyze the spelling changes. The verb 'ir' changed completely to 'fui', which shares no letters with the original verb. The verb 'tener' changed its stem from 'ten-' to 'tuv-' to become 'tuve'.
- Step 4: Formulate your conclusion. Both verbs are irregular in the preterite because they do not follow the standard patterns of adding regular endings to their starting stems.
