额外

• 拼音: é wài
• 汉字拆解: 额 = 革 (top-of-head area) + 客 (guest, phonetic) — forehead, extended to fixed amount/quota; 外 = 夕 (evening) + 卜 (divination) — that which is outside the expected

含义

Extra; additional; beyond the usual or required amount. Outside the normal scope or quota.

额外 is commonly used in workplace, financial, and contractual contexts. It describes what exceeds an established baseline: 额外费用 (extra fees), 额外工作 (additional work), 额外福利 (extra benefits). It is more formal and precise than 多余 (excess/surplus).

例句

1. 公司为加班员工提供额外补贴，以表彰他们在项目攻坚阶段的付出。
2. 这次行程中产生的额外费用需要提前申报，否则无法报销。
3. 她主动承担了额外的教学任务，帮助新入职的同事尽快熟悉课程内容。

用法指南

语境: workplace, finance, contracts, education

语气: neutral

正确说法

• 此次合同修订新增了若干条款，其中包括对于超出工作范围的服务收取额外费用的规定。(This contract revision added several new clauses, including a provision for charging extra fees for services that exceed the scope of work.)
• 政府宣布为受灾地区提供额外的财政拨款，用于支持灾后重建和受灾居民的生活安置工作。(The government announced additional financial allocations for the disaster-affected areas to support post-disaster reconstruction and the resettlement of affected residents.)

错误说法

• 他额外地吃了一碗饭 — while interpretable, 额外 sounds bureaucratic for casual eating; use 又多吃了一碗 or 多吃了一碗; 额外 is best reserved for formal or quantifiable contexts

起源与历史

额 (forehead/quota/fixed amount) + 外 (outside/beyond) — beyond the fixed quota or established amount

文化背景

时代: Modern

世代: All ages

社会背景: Universal