[show/teach/tell etc.] (someone) a thing or two
know a thing or two - to have a lot of practical skills and knowledge learnt through experience.
Julie - now she could teach you a thing or two about dealing with men. (usually + about)
英语词组固定搭配大全包含18674条英汉双解词组，基本涵盖了全部常用英文词组、短语的翻译及用法，是英语学习的有利工具。