1.2名词复数的规则变化
1）一般情况+s，map-maps
2）以s,sh,ch,x等结尾的词+es，bus-buses，watch-watches
3）以ce,se,ze,(d)ge等结尾的词+s，license-licenses
4）以辅音字母y结尾把y变i结尾+es，baby-babies
5）以y结尾的专有名词，或元音字母+y结尾的名词变复数时，直接加s变复数：two Marys，the Henrys，monkey-monkeys，holiday-holidays，storey-storeys，story-stories
6）以o结尾的名词，变复数时：
o+s如：photo-photos，piano-pianos，radio-radios，zoo---zoos
o+es，如：potato-potatoes，tomato-tomatoes
均可，如：zero-zeros/zeroes
7）以f或fe结尾的名词变复数时：
+s，如：belief-belief，sroof-sroofs，safe-safes，gulf-gulfs；
f，fe变v，ve+s，如：half-halves，knife-knives，leaf-leaves，wolf-wolves，wife-wives，life-lives，thief-thieves；
均可,如：handkerchiefs-handkerchieves
1）一般情况+s，map-maps
2）以s,sh,ch,x等结尾的词+es，bus-buses，watch-watches
3）以ce,se,ze,(d)ge等结尾的词+s，license-licenses
4）以辅音字母y结尾把y变i结尾+es，baby-babies
5）以y结尾的专有名词，或元音字母+y结尾的名词变复数时，直接加s变复数：two Marys，the Henrys，monkey-monkeys，holiday-holidays，storey-storeys，story-stories
6）以o结尾的名词，变复数时：
o+s如：photo-photos，piano-pianos，radio-radios，zoo---zoos
o+es，如：potato-potatoes，tomato-tomatoes
均可，如：zero-zeros/zeroes
7）以f或fe结尾的名词变复数时：
+s，如：belief-belief，sroof-sroofs，safe-safes，gulf-gulfs；
f，fe变v，ve+s，如：half-halves，knife-knives，leaf-leaves，wolf-wolves，wife-wives，life-lives，thief-thieves；
均可,如：handkerchiefs-handkerchieves
