1.普通情况加 -s
1) 清辅音后读/s/; map-maps book—books desk--desks
2) 浊辅音和元音后读 /z/; bag-bags car-cars game—games boy—boys key--keys
2.以s,sh,ch ,x等结尾加 –es 读 /iz/ bus-buses
watch-watches
3.以ce,se,ze,(d)ge等结尾加 –s 读 /iz/ license-licenses price—prices case-- cases
4.以y结尾词
1)以辅音字母+y结尾词变y 为i再加es 读 /z/
baby---babies candy---candies comedy---comedies
family---families
2) 以y结尾专有名词,或元音字母+y 结尾名词变复数时,直接加s变复数:
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