To use adjectives and nouns correctly in Spanish, remember two important rules:

1. Gender Agreement:
Adjectives must match the nouns they describe in gender. There are two genders: masculine and feminine.

• Masculine nouns often end with -o. Examples:

  • "niño" (boy)
  • "alto" (tall)

• Feminine nouns usually end with -a. Examples:

  • "niña" (girl)
  • "alta" (tall)

Here are examples:

• "El niño alto" means "The tall boy."
• "La niña alta" means "The tall girl."

2. Number Agreement:
Nouns also need to match in number. This means they can be singular (one) or plural (more than one).

• To make nouns plural:

  • Add -s if the noun ends with a vowel (like "a" or "o").
  • Add -es if the noun ends with a consonant (like "t" or "r").

• Adjectives change too:

  • "Los niños altos" means "The tall boys."
  • "Las niñas altas" means "The tall girls."

3. Combined Agreement:
Sometimes both gender and number change. Make sure to use the right forms:

• "Los gatos negros" means "The black cats."
• "Las gatas negras" means "The black female cats."

4. Practice Example:

• Singular: "El coche rojo" means "The red car."
• Plural: "Los coches rojos" means "The red cars."

If you remember these rules, it will help you speak Spanish better and use correct sentences!