善于 shànyú HSK4 to be good at Origin Definitions Defs Strokes Stroke Words Sentences Sents 善 shàn verb to be good at to be good at something; to be adept in a particular skill; often used as a bound form in 善于 shànyú or 擅长 shàncháng于 於 yú preposition in Indicates a location, scope, or time; equivalent to 在 zài