Regular -ar verbs in Spanish work in a simple way when we talk about the present. Let’s go through it step by step.

Present Tense Conjugation

To change regular -ar verbs into the present tense, you just need to remove the -ar ending and add new endings based on who you’re talking about. Here’s how it goes:

• yo (I) - add -o
• tú (you, informal) - add -as
• él/ella/usted (he/she/you, formal) - add -a
• nosotros/nosotras (we) - add -amos
• vosotros/vosotras (you all, informal in Spain) - add -áis
• ellos/ellas/ustedes (they/you all, formal) - add -an

Let’s see it with the verb "hablar" (to speak):

• yo hablo (I speak)
• tú hablas (you speak)
• él habla (he speaks)
• nosotros hablamos (we speak)
• vosotros habláis (you all speak)
• ellos hablan (they speak)

Important Grammar Points

1. Irregular Verbs: Some verbs are different and don’t follow these rules. For example, ser (to be), estar (to be), ir (to go), and tener (to have) change in special ways. Like, "ser" becomes soy, eres, es, somos, sois, son.

2. Articles: When you talk about a single masculine noun, use el (like el libro - the book). For a single feminine noun, use la (like la casa - the house). If you want to say “a” or “an,” use un for masculine and una for feminine.

3. Questions: To ask questions, start with a question word (like qué - what, dónde - where, cómo - how) or switch the order of the subject and the verb. For example, you can say, ¿Hablas tú español? (Do you speak Spanish?)

4. Past Tense: To talk about things that already happened, we use the preterite tense. For regular -ar verbs in the past, the endings change to -é, -aste, -ó, -amos, -asteis, -aron.

Now you know the basics of regular -ar verbs in Spanish! Happy learning!