Verbs are words that describe an action or a state of being. In Spanish, verbs are conjugated based on the subject and tense. There are regular and irregular verbs, and learning their conjugations is key to forming sentences.

Examples:
hablar (to speak), comer (to eat), vivir (to live)

Nouns are words that name people, animals, places, things, or ideas. In Spanish, all nouns have gender (masculine or feminine) and number (singular or plural). Some are countable and others uncountable.

Examples:
casa (house), perro (dog), árbol (tree), mujer (woman)

Adjectives describe or modify nouns. In Spanish, adjectives must agree in gender and number with the noun they describe, and usually come after the noun.

Examples:
alto (tall), feliz (happy), rojo (red), frío (cold)

Adverbs describe or modify verbs, adjectives, or other adverbs. They give extra information about how, when, where, or to what extent something happens.

Examples:
aquí (here), fácilmente (easily), mucho (a lot), bien (well)

Pronouns replace nouns in a sentence to avoid repetition. Spanish has subject pronouns, object pronouns, reflexive pronouns, and more.

Examples:
yo (I), tú (you), él (he), nosotros (we), ellos (they)

Prepositions show the relationship between a noun or pronoun and other parts of the sentence. They are often used to talk about location, time, or direction.

Examples:
en (in), sobre (on), con (with), de (from)

Determiners include articles and other words that go before nouns to show definiteness, quantity, or possession. In Spanish, articles must agree in gender and number with the noun.

Examples:
el / la / los / las (the), un / una / unos / unas (a, an), este / esa (this, that), primer (first)

Conjunctions are used to join words, phrases, or clauses. Spanish conjunctions help connect ideas smoothly in a sentence.

Examples:
y (and), pero (but), o (or), porque (because)

Interjections are words or sounds used to express emotion such as surprise, happiness, frustration, or pain.

Examples:
¡Ah!, ¡Oye!, ¡Vaya!, ¡Ay!

In summary, learning the parts of speech in Spanish is essential to building clear and accurate sentences. Each part has a specific function, and understanding how they work together will help you create more complex and natural Spanish sentences.