Grammar / A1 : Beginner / Possessive adjectives
Possessive adjectives
mon, ma, mes, ton, ta, tes, son, sa, ses, notre, votre, leur...
The owner's gender is irrelevant
In English, the choice between "his" and "her" depends on the gender of the owner. French does not work this way. In French, the possessive adjective agrees with the noun it accompanies, not with the person who owns it. The owner's gender is completely irrelevant to the form chosen.
Pierre has a book. Pierre has a car. In English: his book, his car (both "his" because Pierre is male). In French: son livre (because livre is masculine) and sa voiture (because voiture is feminine). Pierre's gender plays no part in the choice.
Now Marie has the same objects. In English: her book, her car. In French: still son livre and sa voiture, identical to Pierre's. The French possessive changes when the object changes, not when the owner changes. This single rule, properly understood, prevents the majority of errors with this topic.
1. The complete table
| Owner | Masc. singular | Fem. singular | All plurals | English equivalent |
|---|---|---|---|---|
| je | mon | ma | mes | my |
| tu | ton | ta | tes | your |
| il / elle / on | son | sa | ses | his / her / its |
| nous | notre | notre | nos | our |
| vous | votre | votre | vos | your |
| ils / elles | leur | leur | leurs | their |
💡 Notice that notre, votre and leur do not change between masculine and feminine singular. Only the first three rows (mon/ma, ton/ta, son/sa) have a gender distinction in the singular.
2. The noun controls the form : in detail
Since the form of the possessive depends on the noun it accompanies, you need to know the gender of the noun before you can choose the right adjective. This is why learning a noun's gender at the same time as the noun itself matters so much: the ripple effects reach every part of the sentence.
| Noun | Gender | Owner: Pierre (he) | Owner: Marie (she) |
|---|---|---|---|
| le livre (book) | masculine | son livre (his book) | son livre (her book) |
| la voiture (car) | feminine | sa voiture (his car) | sa voiture (her car) |
| les clés (keys) | feminine plural | ses clés (his keys) | ses clés (her keys) |
| le appartement (flat) | masculine | son appartement | son appartement |
⚠ The most common mistake at this level is translating "his/her" directly and choosing son for male owners and sa for female owners. This produces systematic errors.
❌ Marie aime sa frère. (wrong: frère is masculine, regardless of Marie being female)
✓ Marie aime son frère. (correct: son because frère is masculine)
❌ Paul déteste son sœur. (wrong: sœur is feminine)
✓ Paul déteste sa sœur. (correct: sa because sœur is feminine)
Test yourself: what is the French for "her father", "his mother", "her husband", "his wife"?
son père (her father: père is masculine) · sa mère (his mother: mère is feminine)
son mari (her husband: mari is masculine) · sa femme (his wife: femme is feminine)
Every answer depends on the noun, not the owner.
3. ma / ta / sa become mon / ton / son before a vowel
When a feminine noun begins with a vowel or a silent h, the forms ma, ta, sa are replaced by mon, ton, son. This change is purely phonetic: two vowel sounds directly adjacent are awkward in French, and the masculine form resolves the hiatus smoothly.
The noun is still feminine. The possessive adjective simply takes a different form for sound reasons. If there is an adjective between the possessive and the noun, and that adjective starts with a consonant, ma/ta/sa come back.
| Feminine noun starting with vowel or silent h | Correct form | Why |
|---|---|---|
| amie (female friend) | mon amie / ton amie / son amie | ma amie is a phonetic hiatus (avoided) |
| école (school) | mon école / ton école / son école | ma école is awkward to pronounce |
| histoire (history / story) | mon histoire / ton histoire / son histoire | h is silent (same rule applies) |
| adresse (address) | mon adresse / ton adresse / son adresse |
💡 mon amie looks masculine but it is not: amie remains a feminine noun. You can see this in agreement: mon amie est contente uses the feminine adjective contente. The mon is only there for phonetic reasons, not because the gender has changed.
4. notre / votre / leur and the plural forms
notre and votre do not change for gender
In the singular, notre and votre are the same for masculine and feminine nouns. Only the shift to plural changes them.
| Singular (m. or f.) | Plural | |
|---|---|---|
| nous | notre maison · notre jardin | nos maisons · nos jardins |
| vous | votre appartement · votre idée | vos appartements · vos idées |
leur and leurs : the number agreement that learners miss
leur also does not change for gender in the singular. But it does add an -s in the plural, and this is the point where many learners slip. In English "their" never changes. In French, leur becomes leurs when the thing owned is plural, regardless of how many owners there are.
| Owned noun | French | English |
|---|---|---|
| one house (singular) | leur maison | their house |
| two houses (plural) | leurs maisons | their houses |
| one child (singular) | leur enfant | their child |
| three children (plural) | leurs enfants | their children |
| one opinion (singular) | leur opinion | their opinion |
| several opinions (plural) | leurs opinions | their opinions |
⚠ The -s on leurs agrees with the noun, not with how many owners there are.
Ils ont une voiture. → C'est leur voiture. (one car = singular)
Ils ont deux voitures. → Ce sont leurs voitures. (two cars = plural)
5. Possessives with family, body, and objects
Possessive adjectives are used constantly when talking about family relationships, personal belongings, and parts of one's life. Here are the most useful combinations at this level, with their correct agreement.
Family
mon père (my father) · ma mère (my mother) · mes parents (my parents)
mon frère (my brother) · ma sœur (my sister) · mes frères et sœurs (my siblings)
mon mari (my husband) · ma femme (my wife) · mon/ma partenaire (my partner)
mon fils (my son) · ma fille (my daughter) · mes enfants (my children)
mon grand-père (my grandfather) · ma grand-mère (my grandmother)
Personal world
mon appartement (my flat) · ma chambre (my room) · mon bureau (my office / desk)
mon travail (my work) · mon entreprise (my company) · mes collègues (my colleagues)
mon téléphone (my phone) · ma voiture (my car) · mes affaires (my things / belongings)
mon opinion (my opinion) · mon idée... wait: mon idée starts with a vowel → ✓ mon idée (even though idée is feminine)
💡 Body parts in French typically use the definite article (le, la, les) rather than a possessive adjective, especially with avoir mal à and verbs of movement. This was covered in the avoir lesson: j'ai mal à la tête (not ma tête). The possessive is used when you want to be specific or emphatic: ma jambe me fait mal (my leg is hurting me).
6. Possessives in context
Reading possessive adjectives in continuous text is the fastest way to solidify the agreement reflex. Here is a short paragraph: notice how each possessive depends on the noun that follows, regardless of who the owner is.
Léa habite avec son mari et leurs deux enfants. Son appartement est grand et lumineux. Sa chambre donne sur le jardin. Elle aime son travail, mais ses horaires sont difficiles. Son patron est compréhensif et ses collègues sont sympas. Le week-end, elle retrouve ses amies pour boire un café dans leur quartier préféré.
Léa lives with her husband and their two children. Her flat is large and bright. Her bedroom overlooks the garden. She likes her work but her hours are difficult. Her boss is understanding and her colleagues are nice. At the weekend she meets her friends for a coffee in their favourite neighbourhood.
7. Key points
✓ Possessive adjectives agree with the noun, not the owner. The owner's gender is irrelevant.
✓ Three rows with gender distinction: mon/ma/mes · ton/ta/tes · son/sa/ses
✓ Three rows without gender distinction: notre/notre/nos · votre/votre/vos · leur/leur/leurs
✓ Before feminine nouns starting with a vowel or silent h: ma/ta/sa become mon/ton/son. The noun remains feminine.
✓ son livre can mean "his book" or "her book" depending on context: the form is identical.
✓ leur becomes leurs when the owned noun is plural: regardless of how many owners.
✓ Body parts usually take the definite article (j'ai mal à la tête), not the possessive.