"My shoes are red."
Translation:Mes chaussures sont rouges.
In grammatical terms, the French language has genders, masculine and feminine, and numbers, singular or plural.
"My" can translate to:
- ma, feminine singular, before a feminine singular noun starting with a consonant
- mon, masculine singular, before a masculine singular noun.
- mon, before a feminine singular noun starting with a vowel sound, to avoid the vowel sound conflict
- mes, before any plural noun.
As a consequence, the French possessive adjectives, just like all other adjectives, agree with the noun they modify, which is the thing possessed, not the owner.
"Chaussure" is a feminine singular noun and the possessive is "ma chaussure" = my shoe
"Chaussures" is a plural noun and the possessive is "mes chaussures" = my shoes