Seven sisters are "sept soeurs" in French.
la chambre de ma soeur
'sisters forever' is 'sœurs pour toujours' in French.
"Mes deux soeurs" is how you say "my two sisters" in French.
Sister is "soeur", pronounced 'sir'.
seven - sept
my twin sisters is mes soeurs jumelles
Pas de soeurs
You would say "je n'ai pas de soeurs" in French to express that you do not have sisters.
"I have four sisters" is "j'ai quatre soeurs" in French.
seven apples is translated 'sept pommes' in French
J'ai trois soeurs.
"mes sœurs sont..."