In French, adjectives (words that describe nouns) need to match the noun they describe. This means they change based on two things: gender (masculine or feminine) and number (singular or plural).

Gender Agreement:

Adjectives usually have two forms: one for masculine nouns and one for feminine nouns.

To change from masculine to feminine, you often add an -e to the end of the masculine form.

For example:

• "grand" means "tall" (masculine).
• "grande" means "tall" (feminine).

Watch out! Some adjectives are irregular. For example:

• "beau" means "handsome" (masculine), and it changes to "belle" (feminine), which means "beautiful."

So, if you say:

• Masculine: Un homme grand (A tall man)
• Feminine: Une femme grande (A tall woman)

Number Agreement:

Adjectives also change when talking about more than one thing.

To make an adjective plural, you usually add -s.

If the adjective already ends in -s or -x, it stays the same.

For example:

• Singular: Un livre intéressant (An interesting book)
• Plural: Des livres intéressants (Interesting books)

Combining Gender and Number:

When using both gender and number, the adjective needs to match the noun.

If you're describing a group with both boys and girls, it's common to use the masculine plural form.

For example:

• Mixed Group: Des étudiants heureux (Happy students—both male and female)

Past Participles as Adjectives:

Past participles (words that show a completed action) also change based on gender and number.

For instance:

• "Il est fatigué" means "He is tired."
• "Elle est fatiguée" means "She is tired."
• In the plural: "Ils sont fatigués" (They are tired, masculine) or "Elles sont fatiguées" (They are tired, feminine).

To summarize:

1. Add -e for feminine forms, when needed.
2. Add -s for plural forms, unless the adjective already ends in -s or -x.
3. Use masculine plural for mixed-gender groups.
4. Past participles also need to match the gender and number of the nouns.

By mastering these rules, you will improve your use of French adjectives a lot!