Regular -ir verbs in Spanish have special endings when we use them in the present tense. Here’s a simple breakdown:

Conjugation Endings:

• Yo: -o (like in vivir → yo vivo)
• Tú: -es (like in vivir → tú vives)
• Él/Ella/Usted: -e (like in vivir → él vive)
• Nosotros/Nosotras: -imos (like in vivir → nosotros vivimos)
• Vosotros/Vosotras: -ís (like in vivir → vosotros vivís)
• Ellos/Ellas/Ustedes: -en (like in vivir → ellos viven)

Important Grammar Points to Remember:

1. -ar and -er verbs work in a similar way. For example, hablar (to speak) and comer (to eat) have endings that are quite alike.

2. Irregular Verbs: Some common verbs like ser (to be), estar (to be), ir (to go), and tener (to have) don’t follow these patterns. They change in different ways.

3. Articles: Use "el" (the) for a single masculine item and "la" (the) for a single feminine item. You can use "un" (a) for a masculine item and "una" (a) for a feminine item.

4. Creating Questions: Start with a question word (like ¿Qué? for "What?"). You can also switch the order of the words (like ¿Vives tú? for "Do you live?"), or change how you say it to ask.

5. Learning About Past Tenses: It’s important to know the difference between preterite (for finished actions) and imperfect (for ongoing actions).

Practice these ideas with exercises to help you remember!