Le pluriel des noms

> En règle générale, la forme plurielle du nom est construite en ajoutant un "-s" à la forme singulière:
shoe --> shoes
book --> books
river --> rivers

> Les mots se terminant en "s" ou "z" prendront généralement la terminaison "-es" :
bus --> buses
kiss --> kisses

> Les mots se terminant en "-y" prendront généralement la terminaison "-ies" :
party --> parties
supply --> supplies

> Certains mots sont irréguliers au pluriel :
one man --> two men
one woman --> two women
one person --> two people
one foot --> two feet
one mouse --> two mice
one goose --> two geese
one tooth --> two teeth
one wife --> two wives
one child --> two children
one knife --> two knives
one thief --> two thieves
one dwarf --> two dwarves (ou: dwarfs)
one potato --> two potatoes
one leaf --> two leaves
one life --> two lives
one loaf --> two loaves
one half --> two halves

> Certains mots rarissimes ne changent pas du tout au pluriel :
one moose --> two moose
one sheep --> two sheep
one aircraft --> two aircraft

> Les mots d'origine latine ou grecque qui ont retenu une terminaison antique se conformeront généralement à la forme plurielle de leur langue d'emprunt :
one alumnus --> two alumni
one syllabus --> two syllabi
one alumna --> two alumnae
one alga --> many algae
one criterion --> many criteria
one forum --> many fora (ou : forums)
one thesis --> two theses
one hypothesis --> two hypotheses
one phenomenon --> two phenomena
one cactus --> two cacti (ou : cactuses)
one diagnosis --> two diagnoses
one oasis --> two oases
one analysis --> two analyses