If you call someone a know-it-all, you mean they act as if they already know everything, and they like to correct other people. You say it because you do not like that behaviour — it is never praise. The person may really know a lot, or they may only sound sure; the word is about the show, not a test score.

If you call someone a know-it-all, you mean they act as if they already know everything如果你叫某人a know-it-all意思是他表現得好像什麼都懂 and they like to correct other people而且喜歡糾正別人 You say it because you do not like that behaviour你會這樣說是因為你不喜歡這種行為 it is never praise這絕對不是稱讚 The person may really know a lot, or they may only sound sure這個人可能真的懂很多也可能只是聽起來很篤定 the word is about the show, not a test score這個字說的是表現出來的樣子不是實際的分數

It is informal and a little sharp. You hear it about a classmate who cannot let a small mistake pass, or a friend who explains your own story back to you.

It is informal and a little sharp這個字很口語而且有點尖銳 You hear it about a classmate who cannot let a small mistake pass你會聽到有人這樣說一個容不下別人小錯誤的同學 or a friend who explains your own story back to you或是一個把你自己的故事講回給你聽的朋友

British English often says know-all for the same kind of person; American English likes know-it-all. You can put it in front of a noun too: a know-it-all tone, a know-it-all smile.

British English often says know-all for the same kind of person英式英語常用know-all來形容同一種人 American English likes know-it-all美式英語則喜歡用know-it-all You can put it in front of a noun too它也可以放在名詞前面 a know-it-all tone, a know-it-all smilea know-it-all tone、a know-it-all smile