| + s | большинство слов: dog → dogs |
| + es | после -s, -sh, -ch, -x, -o: box → boxes, potato → potatoes |
| y → ies | согласная + y: baby → babies |
| гласная + y | просто +s: boy → boys, key → keys |
| f/fe → ves | wolf → wolves, knife → knives. Но: roofs, chiefs, cliffs! |
| -o искл. | photos, pianos, radios, videos |
| Особые | man→men, woman→women, child→children, foot→feet, tooth→teeth, mouse→mice, goose→geese, ox→oxen |
| Не меняются | sheep, fish, deer |