C1 Conjunctions & Connectors 7 min read 中等

正式理由 (-기에)

在正式写作或文学作品中，使用 «-기에» 来客观地陈述原因或背景。你可以把它看作是更具书卷气的 «因为»。
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Grammar Rule in 30 Seconds

Use -기에 to provide a formal, objective reason for a subsequent action or state.

  • Attach -기에 directly to the verb/adjective stem: '비가 오기에 우산을 썼다'.
  • Use it for objective, formal reasoning rather than subjective excuses.
  • It is commonly used in written reports, news, or formal announcements.
Verb/Adj Stem + 기 + 에

Overview

As a C1-level Korean learner, you are moving beyond basic communication and delving into the nuanced linguistic tools that allow for precision, formality, and rhetorical sophistication. The grammatical construction -(으)기에 (or simply -기에 after verbs/adjectives ending in a vowel) represents a pivotal step in this journey, marking a distinct shift from common conversational connectors like -아/어서 and -(으)니까 to a more formal, objective, and often literary mode of expression. This pattern primarily serves to establish a reason, ground, or justification for the subsequent clause, presenting the initial statement as an objective fact, condition, or established circumstance rather than a subjective opinion or immediate feeling.
Its formal nature means you will encounter it predominantly in written contexts—academic papers, official reports, legal documents, formal speeches, and literary works—though understanding its underlying logic is crucial for comprehensive comprehension.
Historically, -(으)기에 is often considered the root from which the more colloquial -(으)길래 evolved. While -(으)길래 carries a sense of the speaker's direct observation or reaction in casual speech, -(으)기에 maintains a detached, authoritative, and analytical tone, presenting the reason with a sense of universal truth or objective necessity. Mastering -(으)기에 not only enhances your reading comprehension of advanced Korean texts but also refines your ability to produce sophisticated written Korean, allowing you to articulate complex arguments and explanations with appropriate gravitas.
This guide will meticulously unpack its formation, usage contexts, common pitfalls, and subtle distinctions from similar grammatical structures, equipping you with the expertise to wield this advanced connector effectively.

How This Grammar Works

At its core, -(으)기에 functions as a conjunctional ending that connects a preceding clause, which presents a reason or basis, to a subsequent clause, which states a resulting action, state, or conclusion. Unlike other reason-expressing grammatical patterns, -(으)기에 imbues the reason with a sense of objective justification or inherent truth. It suggests that the preceding clause is a universally accepted fact, a logical prerequisite, or an undeniable condition that naturally leads to the event or situation described in the following clause.
This objective quality is paramount; -(으)기에 is not typically used for subjective feelings or personal opinions as reasons.
The grammatical structure positions the reason as a given premise, implying that any rational observer would accept it as the foundation for what follows. For example, when you say 날씨가 춥기에 옷을 두껍게 입었습니다. (Nalssiga chupgie oseul ttukkeopge ibeotseumnida., Because the weather was cold, I dressed warmly.), you are not merely stating a cause-and-effect; you are presenting the cold weather as an objective condition that necessitated the action of dressing warmly, implying a logical and almost unavoidable consequence. This makes -(으)기에 particularly powerful in formal discourse where explanations require a solid, impartial foundation.
Consider another example: 법이 그러하기에 따를 수밖에 없습니다. (Beobi geureohagie ttareul subakke eopseumnida., Because the law is so, there is no choice but to follow.). Here, 법이 그러하다 (the law is so) is presented as an incontrovertible fact, an objective truth that leaves no alternative but to comply. The second clause, 따를 수밖에 없다 (there is no choice but to follow), directly and logically stems from this objective premise.
This grammar emphasizes the rational link between two propositions, making it indispensable for conveying formal reasoning, factual reporting, and academic arguments. Its role is to articulate why something is or was the case from a detached, logical perspective, solidifying its place as a key component of advanced Korean grammar.

Formation Pattern

1
Mastering the formation of -(으)기에 is straightforward, as it exhibits a consistent conjugational pattern with minimal irregularities. The choice between -기에 and -이기에 depends on whether the preceding element is a verb/adjective stem or a noun, and for nouns, whether it ends in a consonant or a vowel. This clarity makes it relatively easy to apply once you understand the basic rules.
2
1. Verbs and Adjectives (Present Tense)
3
For verb and adjective stems, you simply attach -기에 directly to the stem. This rule applies uniformly, regardless of whether the stem ends in a vowel or a consonant, and even for most irregular verbs and adjectives. The key is to take the base form, remove the -다, and then append -기에.
4
| Stem Ending | Pattern | Example (Verb) | Romanization | Meaning |
5
| :------------- | :--------------- | :------------------ | :----------------- | :----------------- |
6
| Vowel | V-stem + -기에 | 가다 → 가기에 | gida → gagi | because one goes |
7
| Consonant | C-stem + -기에 | 먹다 → 먹기에 | meokda → meokgi | because one eats |
8
| ㄹ Irregular | ㄹ-stem + -기에 | 살다 → 살기에 | salda → salgi | because one lives |
9
| ㄷ Irregular | ㄷ-stem + -기에 | 듣다 → 듣기에 | deutta → deutgi | because one hears |
10
| ㅂ Irregular | ㅂ-stem + -기에 | 돕다 → 돕기에 | dopda → dopgi | because one helps |
11
Example Sentence: 날씨가 좋기에 산책을 했습니다. (Nalssiga jokie sanchaekeul haetseumnida., Because the weather was good, I took a walk.)
12
Example Sentence: 일이 복잡하기에 시간이 더 필요합니다. (Iri bokjapagiye sigani deo piryohamnida., Because the work is complex, more time is needed.)
13
2. Verbs and Adjectives (Past Tense)
14
To express a reason that occurred in the past, you use the past tense suffix -(았/었/였) followed by -기에. This forms -(았/었/였)기에.
15
| Stem Ending | Pattern | Example (Verb) | Romanization | Meaning |
16
| :------------- | :-------------------- | :-------------------- | :----------------------- | :----------------------- |
17
| Vowel/Consonant| V/C-stem + -았/었/였기에 | 하다 → 했기에 | hada → haetgie | because one did |
18
| | | 먹다 → 먹었기에 | meokda → meogeotgie | because one ate |
19
| | | 오다 → 왔기에 | oda → watgie | because one came |
20
Example Sentence: 그는 최선을 다했기에 후회는 없습니다. (Geuneun choeseoneul dahaetgie huhwineun eopseumnida., Because he did his best, there are no regrets.)
21
Example Sentence: 오해가 있었기에 관계가 소원해졌습니다. (Ohaega isseotgie gwangyega sowonhaejyeotseumnida., Because there was a misunderstanding, the relationship became estranged.)
22
3. Nouns
23
When attaching -(으)기에 to a noun, you use 이기에 if the noun ends in a consonant and 기에 if the noun ends in a vowel. This is consistent with other post-nominal particles in Korean.
24
| Noun Ending | Pattern | Example (Noun) | Romanization | Meaning |
25
| :---------- | :--------------- | :-------------------- | :-------------------- | :-------------------- |
26
| Consonant | Noun + -이기에 | 학생 → 학생이기에 | haksaeng → haksaeng| because one is a student|
27
| Vowel | Noun + -기에 | 의사 → 의사이기에 | uisa → uisagie | because one is a doctor|
28
Example Sentence: 그는 지도자이기에 책임감이 막중합니다. (Geuneun jidojaije chaeimgami makjunghamnida., Because he is a leader, his sense of responsibility is immense.)
29
Example Sentence: 이것은 기회이기에 놓칠 수 없습니다. (Igeoseun gihwaeigie nochil su eopseumnida., Because this is an opportunity, it cannot be missed.)

When To Use It

-(으)기에 is primarily a tool for formal, objective, and often weighty communication. Its usage is deeply embedded in contexts where clarity, justification, and a degree of detachment are valued. Understanding these specific scenarios is key to harnessing its C1-level utility.
1. Formal Written Contexts:
This is the most common domain for -(으)기에. You will encounter it extensively in:
  • Academic Papers and Research: When presenting methodologies, justifying conclusions, or explaining experimental designs. The objective tone of -(으)기에 lends itself perfectly to scholarly discourse.
  • 본 연구는 선행 연구가 부족하기에 새로운 접근법을 모색하였습니다. (Bon yeonguneun seonhaeng yeonguga bujokagie saeroun jeopgeunbeobeul mosaekhayeotseumnida., Because prior research was insufficient, this study sought a new approach.)
  • Official Reports and Business Documents: Explaining decisions, policy changes, or the rationale behind actions within a professional setting.
  • 예산이 한정적이기에 효율적인 자원 배분이 필요합니다. (Yesani hanjeongjeogigie hyoyuljeogin jawon baebuni piryohamnida., As the budget is limited, efficient resource allocation is necessary.)
  • News Articles and Editorials: Providing background information or the objective causes for events.
  • 기후 변화가 심각하기에 전 세계적인 노력이 요구됩니다. (Gihu byeonhwaga simgakhagie jeon segyejeogin noryeogi yogudoemnida., Because climate change is severe, worldwide effort is required.)
  • Legal Texts: Articulating clauses, conditions, and reasons in a precise and unambiguous manner.
  • 해당 조항이 명시되어 있기에 이에 따라 처리되어야 합니다. (Haedang johangi myeongsidoeeo itgie ie ttara cheoridoeyaeo hamnida., As the relevant clause is specified, it must be processed accordingly.)
2. Literary and Poetic Expression:
-(으)기에 often appears in novels, poems, and song lyrics to create a more profound, contemplative, or classical tone. It can elevate a simple reason into a deeper, more evocative justification.
  • 사랑했기에 모든 것을 감내할 수 있었습니다. (Saranghaetgie modeun geoseul gamnaehal su isseotseumnida., Because I loved, I could endure everything.)
  • 세월이 무상하기에 현재를 소중히 여겨야 합니다. (Sewori musanghagie hyeonjaereul sojunghi yeogyeoya hamnida., As time is fleeting, we must cherish the present.)
3. Justification of Rational Decisions or Observations:
When you need to provide a clear, logical basis for an action or state without personal bias, -(으)기에 is a strong choice. It presents the reason as a compelling and undeniable truth.
  • 상황이 급박하기에 즉각적인 조치가 필요했습니다. (Sanghwangi geupbakhagie jeukgakjeogin jochiga piryohaetseumnida., Because the situation was urgent, immediate action was necessary.)
4. Idiomatic Expressions:
-(으)기에 forms part of several important idiomatic expressions that are frequently encountered at the C1 level.
  • -(으)기에 망정이지 (-(eu)gie mangjeongiji): This translates to

Formation Table

Stem Type Example Result
Verb
가다
가기에
Verb
먹다
먹기에
Adj
춥다
춥기에
Adj
바쁘다
바쁘기에
Past
갔다
갔기에
Past
좋았다
좋았기에

Meanings

Indicates the reason or basis for the following clause. It is more formal than -어서/아서 and often implies an objective observation.

1

Objective Reason

Providing a formal justification for a decision.

“길이 막히기에 지하철을 탔습니다.”

“회의가 길어지기에 먼저 나갔습니다.”

Reference Table

Reference table for 正式理由 (-기에)
词性 词干示例 接续形式 含义
动词（元音结尾）
가다
가기에
由于去
动词（辅音结尾）
먹다
먹기에
由于吃
形容词
크다
크기에
由于大
过去时
갔다
갔기에
由于去了
名词（辅音结尾）
수학생
수학생이기에
由于是学生
名词（元音结尾）
의사
의사기에
由于是医生

正式程度

正式
날씨가 춥기에 외투를 입겠습니다.

날씨가 춥기에 외투를 입겠습니다. (Daily life)

中性
날씨가 추워서 외투를 입어요.

날씨가 추워서 외투를 입어요. (Daily life)

非正式
날씨 추워서 외투 입어.

날씨 추워서 외투 입어. (Daily life)

俚语
추워서 껴입음.

추워서 껴입음. (Daily life)

“原因”连接词生态系统

原因连接词

正式 / 书面

  • -기에 客观、报告、散文

口语 / 随意

  • -길래 反应性、聊天

中性

  • -아/어서 通用、万能

孪生兄弟：-기에 vs -길래

-기에 (书面)
바쁘기에 由于我很忙 (报告)
비가 왔기에 由于下雨了 (新闻)
-길래 (口语)
바쁘길래 看你挺忙的... (聊天)
비가 오길래 我看下雨了就... (讲故事)

选择正确的“因为”

1

这是正式文件或演讲吗？

YES
使用 -기에
NO
下一个问题
2

你只是在和朋友聊天吗？

YES
使用 -길래 或 -아/어서
NO ↓

-기에 使用区域

📧

商务邮件

  • • 解释延迟原因
  • • 说明错误背景
📚

文学作品

  • • 诗意的理由
  • • 戏剧性的独白
🧩

固定搭配

  • • -기에 망정이지
  • • 谢天谢地...
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按水平分级的例句

1

비가 오기에 집에 갔습니다.

Because it was raining, I went home.

1

시간이 없기에 빨리 했습니다.

Because I had no time, I did it quickly.

1

회의가 길어지기에 먼저 나갔습니다.

Since the meeting was getting long, I left early.

1

가격이 적당하기에 이 제품을 선택했습니다.

Because the price was reasonable, I chose this product.

1

상황이 급박하기에 즉각적인 조치가 필요합니다.

Given the urgent situation, immediate action is required.

1

본 사안이 중대하기에 신중한 검토가 요구됩니다.

As this matter is significant, careful review is required.

容易混淆

Formal Reasons (-gie) 对比 -어서/아서

Both mean because.

常见错误

✗

배고프기에 밥 먹어.

✓

배가 고파서 밥을 먹어요.

Too formal for casual speech.
✗

비가 오기에 우산 사세요.

✓

비가 오니까 우산을 사세요.

Cannot use with imperatives.
✗

기분이 좋기에 웃었다.

✓

기분이 좋아서 웃었다.

Not for personal feelings.
✗

그가 오기에 나는 갔다.

✓

그가 오기에 나는 떠났다.

Contextual nuance.

句型

___하기에 ___했습니다.

Real World Usage

Report very common

예산이 부족하기에 계획을 수정했습니다.

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🎯

必背的‘万幸’表达

一定要记住 ...기에 망정이지 这个固定搭配。这是 C1 级别的地道表达，意思是‘幸好[某事]，否则就出大事了’。比如：«비가 왔기에 망정이지, 아니면 큰일 날 뻔했어요.»
⚠️

注意语境失调

如果你给妈妈发短信说 «배가 고프기에 밥을 먹어요»，听起来就像你在读新闻发布会的稿子。在日常对话中，请坚持使用 -길래 或 -아서/어서。
💬

歌词里的深情

在韩语抒情歌（Ballad）中，你经常能听到 -기에。它能赋予歌词一种沉稳、厚重的情感色彩，比如：«너를 사랑하기에»。这种高级感是普通的 -해서 无法替代的。

Smart Tips

Use -기에 instead of -어서.

바빠서 못 갔어요. → 바쁘기에 참석하지 못했습니다.

发音

gi-e

Linking

Pronounce as 'gi-e'.

Flat

Reason -> Result

Objective statement.

记住它

记忆技巧

Think of '기에' as 'Given the situation'.

视觉联想

Imagine a judge in a courtroom saying 'Given the evidence (기에), I rule...'

Rhyme

Formal and neat, use -기에 for the street (of business).

Story

Mr. Kim is a CEO. He writes a report. He uses -기에 to explain why he hired a new manager. It sounds very professional.

Word Web

이유상황근거결과공식보고서

挑战

Write 3 sentences explaining your daily work tasks using -기에.

文化笔记

Used in formal reports to show logical deduction.

Derived from the nominalizer -기 and the particle -에.

对话开场白

“

왜 이 회사를 선택했나요?

日记主题

Write about a recent business decision.

常见错误

Incorrect

正确

Incorrect

正确

Incorrect

正确

Incorrect

正确

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Test Yourself

使用正式的因果模式完成句子。

회의 중___ 전화를 받지 못했습니다. (因为正在开会...)

✓ Correct! ✗ Not quite. Correct answer: 이었기에
对于正式的解释或辩解，“名词 + (이)기에”是合适的。'길래' 太随意，而 '니까' 过于主观。
哪句话适合出现在正式的书面报告中？ 多项选择

选择最佳选项：

✓ Correct! ✗ Not quite. Correct answer: 매출이 감소했기에 대책이 필요합니다.
第一个选项使用了 '-기에' 配合正式终结词，适合报告。其他选项过于口语化。
修改这条发给亲密朋友的短信中不自然的部分。 Error Correction

Find and fix the mistake:

늦었기에 미안해!

✓ Correct! ✗ Not quite. Correct answer: 늦어서 미안해!
在给朋友的短信中，'-기에' 太生硬了。'-어서' 是道歉时的自然选择。

Score: /3

练习题

1 exercises
Fill in the blank.

날씨가 ___ 외출을 취소했습니다.

✓ Correct! ✗ Not quite. Correct answer: a
Formal context.

Score: /1

Practice Bank

10 exercises
完成这封正式邮件。 填空

자료가 ___ 검토 부탁드립니다. (由于资料已准备好...)

✓ Correct! ✗ Not quite. Correct answer: 준비되었기에
选择正确的惯用短语。 多项选择

일찍 ___ 망정이지, 기차를 놓칠 뻔했다.

✓ Correct! ✗ Not quite. Correct answer: 출발했기에
指出随意日记中尴尬的用法。 Error Correction

오늘 날씨가 좋기에 산책을 갔다.

✓ Correct! ✗ Not quite. Correct answer: 오늘 날씨가 좋아서 산책을 갔다.
连词成句：'因为我是外国人，所以不太了解文化。' Sentence Reorder

잘 / 외국인이기에 / 문화를 / 모릅니다

✓ Correct! ✗ Not quite. Correct answer: 외국인이기에 문화를 잘 모릅니다
翻译：'因为有必要，所以我买了。' (正式) 翻译

필요했기에 샀습니다.

✓ Correct! ✗ Not quite. Correct answer: Since it was necessary, I bought it.
将语法与其使用语境匹配。 Match Pairs

连线：

✓ Correct! ✗ Not quite. Correct answer: ["-\uae30\uc5d0 : \u6b63\u5f0f\u62a5\u544a","-\uae38\ub798 : \u4e0e\u670b\u53cb\u804a\u5929","-\uc11c : \u4e00\u822c\u7528\u6cd5"]
完成这个文学色彩的句子。 填空

너를 ___ 보낼 수 없다. (因为爱你...)

✓ Correct! ✗ Not quite. Correct answer: 사랑하기에
哪句话暗示了“幸免于难”？ 多项选择

选择正确的结构：

✓ Correct! ✗ Not quite. Correct answer: 친구가 도와줬기에 망정이다.
修正时态用法。 Error Correction

어제 아프기에 학교에 안 갑니다.

✓ Correct! ✗ Not quite. Correct answer: 어제 아팠기에 학교에 안 갔습니다.
正式道歉邮件。 填空

제 불찰___ 사과드립니다. (由于是我的疏忽...)

✓ Correct! ✗ Not quite. Correct answer: 이기에

Score: /10

常见问题 (1)

No, it is too formal.

Scaffolded Practice

1

1

Mastery Progress

Needs Practice

Improving

Strong

Mastered

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In Other Languages

Spanish moderate

puesto que

Register usage.

French high

étant donné que

None.

German high

da

Syntax.

Japanese moderate

node

Politeness levels.

Arabic high

بما أن

Structure.

Chinese high

鉴于

None.

Learning Path

Prerequisites

Next
高级用法“不仅……而且” (-거니와)

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