名词复数的规则变化 1)一般情况加s. eg: map-maps bag-bags car-cars 2)以s,sh,ch,x等结尾的词加es. eg:bus-buses watch-watches 3)以ce,se,ze,(d)ge等结尾的词加s eg: license-licenses 4)以辅音字母+y 结尾的词变y...