事先

• 拼音: shì xiān
• 汉字拆解: 事 = originally a pictograph of a hand holding a writing instrument, meaning affair; 先 = 止 (foot) + 儿 (person), meaning to go before

含义

In advance; beforehand; prior to an event.

An adverb indicating that something is done before a particular event or time. Emphasises preparation or prior action. Often used with verbs like 准备, 通知, 了解, and 安排.

例句

1. 如果你要来，请事先告诉我。
2. 他事先做了很多准备工作。
3. 事先了解一下当地的天气很有必要。

用法指南

语境: planning, business, everyday

语气: practical

正确说法

• 事先预约可以节省很多时间。(Making a reservation in advance can save a lot of time.)
• 我们事先没有想到会出这样的问题。(We didn't anticipate this kind of problem beforehand.)

错误说法

• 我事先正在准备。(Don't combine 事先 with 正在 — 事先 refers to a completed prior action, not an ongoing one.)

起源与历史

Compound of 事 (matter, event) and 先 (before, first), literally 'before the matter.'

文化背景

世代: All ages

社会背景: Universal