Subject pronouns are really important in Spanish. They help us know who is doing the action in a sentence. Here are the main pronouns you will see:

• Yo (I)
• Tú (you, informal)
• Él/Ella (he/she)
• Nosotros/Nosotras (we)
• Ustedes (you all)
• Ellos/Ellas (they)

Important Points to Remember:

1. Regular Verb Changes:
   This is how we change verbs based on the subject pronoun.

   • AR Verbs: like hablar (to speak)

     • Yo hablo (I speak)
     • Tú hablas (You speak)
     • Él habla (He speaks)

   • ER Verbs: like comer (to eat)

     • Yo como (I eat)
     • Tú comes (You eat)
     • Él come (He eats)

   • IR Verbs: like vivir (to live)

     • Yo vivo (I live)
     • Tú vives (You live)
     • Él vive (He lives)

2. Irregular Verb Changes:
   These verbs do not follow the regular rules.

   • ser (to be): Yo soy (I am), Tú eres (You are), Él es (He is)
   • estar (to be): Yo estoy (I am), Tú estás (You are), Él está (He is)
   • ir (to go): Yo voy (I go), Tú vas (You go), Él va (He goes)
   • tener (to have): Yo tengo (I have), Tú tienes (You have), Él tiene (He has)

3. Reflexive Verbs:
   These verbs show that the subject is doing something to themselves.

   • lavarse (to wash oneself)
     • Yo me lavo (I wash myself)
     • Tú te lavas (You wash yourself)
     • Él se lava (He washes himself)

4. Negative Sentences:
   To make a sentence negative, just add "no" before the verb.

   • Yo no hablo (I do not speak)
   • Tú no comes (You do not eat)
   • Él no vive (He does not live)

Understanding subject pronouns is very important. They help us know how to change verbs and understand sentences better.