21twenty-one；twenty-first23twenty-three；twenty-third21twenty-one；twenty-first23twenty-three；twenty-third25twenty-five；twenty-fifth27twenty-seven；twenty-seventh29twenty-nine；twenty-ninth30thirty；thirtieth32thirty-two；thirty-second34thirty-four；thirty-fourth36thirty-six；thirty-sixth38thirty-eight；thirty-eighth40forty；fortieth50fifty；fiftieth60sixty；sixtieth70seventy；seventieth80eighty；eightieth90ninety；ninetieth100onehundred；onehundredth1000onethousand;onethousandth1one；first2two；second3three；third4four；fourth5five；fifth6six；sixth7seven；seventh8eight；eighth9nine；ninth10ten；tenth11eleven；eleventh12twelve；twelfth13thirteen；thirteenth14fourteen；fourteenth15fifteen；fifteenth16sixteen；sixteenth17seventeen；seventeenth18eighteen；eighteenth19nineteen；nineteenth20twenty；twentieth國家國籍對照表國家(國家或地區)語言國民（復數）國籍America美國/American(-s)AmericanAustralia澳大利亞/Australian(-s)AustralianBrazil巴西/Brazilian(-s)BrazilianBritain英國EnglishBriton(-s)BritishCanada加拿大/Canadian(-s)CanadianChina中國ChineseChinese(-)ChineseEgypt埃及/Egyptian(-s)EgyptianEngland英國EnglishEnglishman(-men)EnglishFrance法國FrenchFrenchman(-men)FrenchGermany德國German*German(-s)GermanGreece希臘GreekGreek(-s)GreekIndia印度/Indian(-s)IndianItaly意大利ItalianItalian(-s)ItalianJapan日本JapaneseJapanese(-)JapaneseRussia俄羅斯RussianRussian(-s)RussianThailand泰國ThaiThai(-s)Thai洲名名詞形容詞Africa非洲AfricanAmerica美洲AmericanAntarctica南極洲AntarcticAsia亞洲AsianAustralia澳洲AustralianEurope歐洲EuropeanNorthAmerica北美洲NorthAmericanOceania大洋洲OceanicSouthAmerica南美洲SouthAmerican月份、星期與縮寫月份縮寫星期縮寫January一月Jan.SundaySun.February二月Feb.MondayMon.March三月Mar.TuesdayTues.April四月Apr.WednesdayWed.May五月May.ThursdayThur.June六月June.FridayFri.July七月July.SaturdaySat.August八月Aug.September