N-COUNT
好为人师者；卖弄学问的人
If you describe someone as a pedagogue, you mean that they like to teach people things in a firm way as if they know more than anyone else.
例句
De Gaulle was a born pedagogue who used the public platform and the television screen to great effect.
戴高乐生来喜欢教育人，他充分利用了公共讲坛和电视荧屏。