un et demi / une et demi
One half in French would be demi.
"une demi-soeur"
et demi
in football a cntre half would be 'un milieu de terrain' in French.
"mi-trimestre"
Demi-journées
un demi
demi-frère
"mi-trimestre"
In French, you would say "Il est quatre heures et demie."
how to say 1 sister in french is une soeur
demi frere