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ild children foot feet tooth teeth goose geese Ox oxen Mouse mice man men woman women policeman policemen gentleman gentlemen Englishman Englishmen Frenchwoman Frenchwomen sheep sheep fish fish deer deer aircraft aircraft Japanese Japanese Chinese Chinese people people 沒(méi)有單數(shù)的名詞 : scissors trousers cloths glasses German Germans American Americans 記住 : roof – roofs , chef – chefs , chief