Bonsoir !!!
As you know the possessive adjectives agree in gender & number with the following noun ; with the possessed object and not with the person who possesses as in English ..................
<u>Voilà </u><u>son </u><u> affiche. </u><u><em>(his)</em></u>
<em> it could be "her", it would still be "son" ..</em>
EXCEPTION = <em>affiche is a feminine noun but as it begins with a vowel, you can't say "sa" affiche ....... so it's "son"</em>
<u><em>when the following noun begins with a vowel or a mute 'h' you won't use 'ma' 'ta' 'sa' but 'mon' 'ton' son' .............</em></u>
<u><em>singular</em></u>
mon affiche = my
ton affiche = your (2nd pers. sing.)
notre affiche = our
votre affiche = your (formal vous)
leur affiche = their (3rd p. sing.)
<u>affiches</u><em><u> plural </u></em><em> </em><u><em>(des affiches)</em></u>
<em>mes affiiche</em><em>s</em>
tes affiches
ses affiches
nos affiches
vos affiches
leurs affiches
