求助英语：什么时候名词变复数加es

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下列词加es：
1) s/x/ch/sh结尾的词颂扰旁加es
如：李毁class, box, watch, brush, fox, match, dish, glass,

2）“辅音+y”结尾的词，y改为i后，加es
如：city, country, study,

3)下列o结尾的词加es: tomato,potato,hero,zero,mango,negro,...
希望对你有所帮助啊 ！有英语类问题野橡尽管问我，QQ：526109825

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以 S X O SH XH

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