班门弄斧

在沪江关注英语的沪友Miran Hill遇到了一个关于的疑惑，已有6人提出了自己的看法。

知识点疑惑描述

班门弄斧

知识点相关讲解

teach one's grandmother to suck eggs

—— A.Calista Jen

teach a fish how to swim

—— Freedom

班门弄斧英语说法1：　　teach one's granny how to suck eggs 　　班门弄斧英语说法2：　　teach fish to swim 　　班门弄斧英语说法3：　　show off one's skill or talent before an expert.

—— 77

don't try to teach your grandma to suck eggs

—— Agnes 

teach fish to swim

—— 小西

teach a fish how to swim

—— Toto