一些特殊单词的复数形式

+es:box(es),
watch(es),
fox(es),
match(es),
fish(es),
bus(es),
class(es)
dress(es),
dish(es),
brush(es)
+ies:factory(factories),
baby(babies),
fly(flies),
study(studies),
penny(pennies),
company(companies),
party(parties),
family(families),
country(countries),
difficulty(difficulties)
+ves:wife(wives),
knife(knives),
leaf(leaves),
wolf(wolves),
thief(thieves),
life(lives),
handkerchief(handkerchieves),
half(halves),
shelf(shelves),
self(selves)
o+:photos,
pianos,
radios,
zoos,
potatoes,
tomatoes,
zeros/es,
heroes,
kilos,
bamboos,
tobaccos,
volcanoes,
mangoes