变ing：一般情况下直接加 辅音字母加y结尾,变y为i加ing.单词只有一个音节时,双写最后一个字母加ing.变复数：以s、x、sh、ch结尾的名词加es:glasses,boxes,brushes,matches.以辅音字母加y结尾的名词,变y为i加es:cities,babies,enemies.4)以f或fe结尾的名词,多数变f为v加es:wives,knives.但有些词只加s:roofs,proof s,chiefs.以o结尾的名词,有些加es:Negroes,heroes,tomatoes,potatoes.其它加s:radio s,zoos,pianos,photos.不规则名词：foot→feet,goose→geese,tooth→teeth,child→children,man→me n,woman→women,sheep→sheep,deer→deer,mouse→mice.某些外来词变复数：datum→data,medium→media,bacterium→bacteria,curriculum→curricula,criterion→criteria,phenomenon→phenomena.( um/ on→a) analysis→analyses,basis→bases,crisis→crises,diagnosis→diagnoses.( is→es ) 复合名词变复数：以不可数名词结尾的复合名词无复数形式,如：homework.以man或woman为前缀的复合名词变复数,前后两个名词都变复数,如：manservant→menservants,woman student women students.其它复合名词变复数：grown up→grown ups,brother in law→brothers in law,stand by→stands by.
怎样变一个单词的词性求大神帮助如动词加ING变名词之类 全面些 谢谢!