Idiom Magic KNOW ONE'S STUFF 精通本行

【明報專訊】Maxwell has studied for many years and he's about to graduate(畢業)from college. "Then he must really know his stuff," Susie said. He certainly does. Rosie is also about to graduate. "She must know her stuff, too!" Susie exclaimed. Yes, I think she does. A person who knows his/her stuff is quite knowledgeable(學識淵博 的). "I don't think I'm terribly smart," Rosie said. "Not yet, but maybe I'll know my stuff in a few years." "When it came to art, Michelangelo(米蓋朗基羅,意大利藝術家)sure knew his stuff," Maxwell added.