1. 轻辅音后读轻音/S/:books, desks, maps, cups, months
2. 浊辅音和元音后读重音/Z/:eggs, bags, bananas, jobs, sisters
3. /S, Z, ∫, t∫, dз / 五音后加(e)S,读/iz/: buses, boxes, classes, watches
4. ts ,tes /ts/: bats, cats, hats, shirts, elephants, classmates
5. ds ,des /dz/: birds, friends, hands, kids, kinds, grades,
6. 不规则变化(1)man—men, woman—women, child—children,
(2)Chinese, Japanese 的复数不变.People本身是复数.