... stimuli 296 Vowel and consonant changes Some plurals are formed by changing the vowel sound foot tooth feet goose geese man men teeth mouse mice woman women NOTE a We also use men and women in ... fair-skinned people One day the peoples of this world will live in peace With some nouns we change f to v and add es/s loaf loaves thief thieves life lives Also: calves, halves, knives, leaves, shelves,...