Personal Pronouns, and the verbs SER, ESTAR, and TENER & VENIR

Personal Pronouns

1st Person Singular: Yo (I)

2nd Person Singular: Tú [casual] / Usted [formal] (You)

3rd Person Singular: Él/Ella (He/She)

1st Person Plural: Nosotros/Nosotras (We)

2nd Person Plural: Ustedes (You all)

3rd Person Plural: Ellos/Ellas (They)

Ser vs. Estar

Both mean “to be",” but they ask two different questions about reality.

• SER describes identity, essence, permanent or long-term traits (What something is)

• ESTAR describes condition, state, location, temporary qualities (How something is)

When to Use Ser (What something is)

Use ser for:

· Identity: Soy profesora. (I am a teacher.)

· Origin: Ella es de México. (She is from Mexico.)

· Time/Date: Son las dos. (It is two o'clock.)

· Permanent characteristics: El cielo es azul. (The sky is blue — inherently)

· Possession: El libro es mío. (The book is mine.)

· Event location: La fiesta es en mi casa. (The party is at my house — the event itself)

When to Use Estar (How something is)

· Temporary conditions: Estoy cansada. (I am tired.)

· Physical location: Madrid está en España. (Madrid is in Spain.)

· Ongoing actions (progressive): Estamos comiendo. (We are eating.)

· Emotions: Él está feliz. (He is happy — right now)

Conjugations

1. Ser is irregular across the board: Soy, eres, es, somos, son.

2. Estar is regular except for yo and accent marks: Estoy is the only irregular yo form.

All other forms follow the -ar verb pattern but add accent marks (estás, está, están) except nosotros.

-ar, -er, and -ir verbs

The -ar, -er, -ir distinction exists because:

(1) It tells you which set of endings to use. If you know a verb is -er, you know nosotros ends in -emos, not -amos or -imos.

(2) It organizes vocabulary. When you learn a new verb, your first question should be "Is it -ar, -er, or -ir?" That one piece of information gives you about 80% of what you need to conjugate it.