his

In French determiners agree in gender and number with the noun that follows. So his, when used as a determiner, is translated by son + masculine singular noun (son chien), by sa + feminine singular noun (sa maison) BUT by son + feminine noun beginning with a vowel or mute 'h' (son assiette) and by ses + plural noun (ses enfants).— When his is stressed, à lui is added after the noun: his house = sa maison à lui.— In French possessive pronouns reflect the gender and number of the noun they are standing for. When used as a possessive pronoun, his is translated by le sien, la sienne, les siens or les siennes according to what is being referred to.