动词后加ing原则,名词变复数原则 帮我总结一下这两个,答: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,...