不规则变化:
(1) a → e 如 man→men, Englishman→Englishmen, Frenchman→Frenchmen, woman→women, Englishwoman→Englishwomen, Frenchwoman→Frenchwomen。以及其它一些以man / woman 结尾的词。如 policeman, postman, milkman, statesman等。(例外:German, human加s)
(2) oo → ee 如 foot→feet, tooth→teeth, goose→geese.
(3) 特殊:child→children, mouse→mice.
(4) 单复数同形:Chinese, Japanese / sheep, deer, fish / yuan, jin, mu 等。如 a sheep→
two sheep
(5) 有关某国人的复数:中日不变(即单复数同形),英法a变e(即a→e),其它加s。
(如 American→Americans)
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