B2 · 中高级 章节 15

Expressing Certainty and Logic

5 总规则
51 例句
5 分钟
本章规则 快速练习

Chapter in 30 Seconds

Master the art of logical deduction and unwavering certainty in natural Korean conversation.

  • Express logical probability based on external circumstances.
  • Deny possibilities and confirm absolute facts with authority.
  • Make educated guesses about the past and concede points gracefully.
Speak with conviction, reason with logic.

你将学到什么

In this chapter, you're about to take a big leap and speak like a true Korean native! You'll move beyond just saying "I'm sure or I think"; you'll learn to precisely and subtly convey your level of certainty and logic in your speech. Imagine your friend hasn't arrived yet, and you see heavy traffic; by learning «-ㄹ/을 법하다,» you can say, "They're likely stuck in traffic." Or, when you're 100% sure something is impossible, with «-ㄹ 리가 없다,» you can decisively say, "There's no way!" In this lesson, you'll learn powerful tools like «-ㄹ/을 게 분명하다» to express yourself without a shred of doubt when you're absolutely certain about something. Wow, how great it is not to worry anymore! You can even use «-았/었을 것이다» to logically deduce about past events you didn't personally witness, like

They must have gone out yesterday.
These structures fit together like a puzzle, allowing you to express anything from a likely guess to absolute certainty in the best possible way. After this chapter, you'll be able to confidently express your opinions with reasoning and certainty in any conversation. You'll even learn how to use «-기는 하다» to concede a point politely before adding a small but and qualifying your statement. Ready for a much deeper and more authentic Korean conversation? Let's get started!

Learning Objectives

By the end of this chapter, you will be able to:

  1. 1
    By the end you will be able to describe likely scenarios using -ㄹ/을 법하다 based on logical reasoning.
  2. 2
    By the end you will be able to strongly negate impossible situations using -ㄹ 리가 없다.
  3. 3
    By the end you will be able to reconstruct past events logically using -았/었을 것이다.

章节指南

Overview

Welcome, B2 Korean learners! Are you ready to elevate your Korean grammar to a truly native-like level? This chapter is your gateway to expressing certainty and logic with precision and nuance.
Moving beyond simple I think or "I'm sure," you'll master expressions that allow you to convey exactly how confident you are about a statement, or how logically you've deduced something. This is a crucial step in achieving fluency and engaging in deeper, more authentic conversations.
At the B2 CEFR level, the expectation is to communicate effectively in a wide range of situations, and that includes expressing your thoughts with conviction and sound reasoning. By learning structures like -ㄹ/을 법하다 for likelihood, -ㄹ 리가 없다 for impossibility, -ㄹ/을 게 분명하다 for absolute certainty, and -았/었을 것이다 for logical past deductions, you'll gain the tools to articulate your opinions with confidence. You'll even learn -기는 하다 to gracefully concede a point before introducing a counter-argument.
These advanced Korean grammar patterns will make your speech more sophisticated and natural, helping you sound less like a textbook and more like a native speaker.

How This Grammar Works

Let's dive into the powerful tools for expressing certainty and logic in Korean. First, for expressing that something is logically likely or probable, we use -ㄹ/을 법하다. This structure suggests that based on circumstances, something seems like it could reasonably happen.
For instance, «그는 바빠서 못 올 법해요» (He's busy, so he's likely unable to come). When you're absolutely certain that there's no way something could be true, you'll use -ㄹ 리가 없다. It conveys strong disbelief or a logical impossibility.
For example, «그가 거짓말을 했을 리가 없어요» (There's no way he lied).
To express absolute certainty, when you have no doubt whatsoever, the phrase -ㄹ/을 게 분명하다 is your go-to. It means "it's clear that or it must be. Imagine saying, 내일 비가 올 게 분명해요" (It's definitely going to rain tomorrow). For making a logical past guess, like deducing what must have happened, we use -았/었을 것이다.
This is perfect for speculating about past events you didn't witness but can logically infer. For example, «그는 어제 집에 일찍 갔을 거예요» (He must have gone home early yesterday). Finally, to acknowledge with a 'but', or to concede a point before offering a qualification, we use -기는 하다.
This softens your statement and adds nuance. For instance, «맛있기는 한데, 너무 비싸요» (It is delicious, but it's too expensive). Mastering these B2 Korean grammar structures will significantly enhance your expressive capabilities.

Common Mistakes

  1. 1✗ Wrong: «비 올 것 같아.» (Sounds too casual/simple for strong certainty)
✓ Correct: «비가 올 게 분명해요.» (It's definitely going to rain.)
*Explanation:* While «것 같다» expresses probability, -ㄹ/을 게 분명하다 conveys a much stronger, almost undeniable certainty, which is what the speaker truly intends here.
  1. 1✗ Wrong: «그가 어제 집에 일찍 가야 했어.» (This implies 'had to go,' not 'must have gone' as a deduction)
✓ Correct: «그는 어제 집에 일찍 갔을 거예요.» (He must have gone home early yesterday.)
*Explanation:* -았/었을 것이다 is specifically for logical deduction about past events. «가야 했어» means he *had* to go, indicating obligation, not inference.
  1. 1✗ Wrong: «이 음식은 맛있어. 하지만 비싸.» (A bit blunt, lacks nuance)
✓ Correct: «이 음식은 맛있기는 한데, 너무 비싸요.» (This food is delicious, but it's too expensive.)
*Explanation:* -기는 하다 acknowledges the positive aspect (delicious) first, then gently introduces the negative (expensive), making the statement more polite and nuanced than a direct but.

Real Conversations

A

A

지영 씨가 아직 안 왔네요. (Jiyoung hasn't arrived yet.)
B

B

길이 많이 막히는 걸 보니, 늦을 법해요. (Seeing the heavy traffic, she's likely going to be late.)
A

A

그 어려운 시험에 그가 합격했을까요? (Do you think he passed that difficult exam?)
B

B

그가 밤새 공부한 걸 보면, 합격했을 리가 없어요. (Considering he studied all night, there's no way he didn't pass. / He must have passed.)
A

A

이 프로젝트는 내일까지 끝낼 수 있을까요? (Can we finish this project by tomorrow?)
B

B

팀원들이 열심히 하고 있으니, 분명히 끝낼 수 있을 게 분명해요. (Since the team members are working hard, it's clear we'll be able to finish it.)

Quick FAQ

Q

What's the main difference between -ㄹ/을 법하다 and just using 아마 (probably)?

While 아마 expresses general probability, -ㄹ/을 법하다 specifically implies that something is *logically reasonable* or *plausible* given the circumstances, often based on common sense or observable facts. It adds a layer of reasoned deduction.

Q

Can -았/었을 것이다 be used for future deductions?

No, -았/었을 것이다 is exclusively for logical deductions about *past* events. For future deductions, you would typically use -ㄹ/을 것이다 (e.g., «내일 비가 올 것이다» - It will probably rain tomorrow).

Q

Is -ㄹ 리가 없다 considered informal?

No, -ㄹ 리가 없다 is a versatile expression usable in both formal and informal contexts. Its formality depends more on the politeness level of the ending (e.g., -ㄹ 리가 없어요 vs. -ㄹ 리가 없어).

Q

When is -기는 하다 more appropriate than a simple yes, but...?

-기는 하다 is perfect when you want to acknowledge a point or agree with something, but immediately want to add a caveat, a criticism, or a different perspective. It softens the but and shows you've considered the other side.

Cultural Context

These expressions of certainty and logic are deeply embedded in how native Korean speakers communicate, reflecting a culture that values thoughtful consideration and polite nuance. Using structures like -ㄹ/을 법하다 allows for logical reasoning without sounding overly assertive, while -기는 하다 enables polite disagreement or qualification, crucial in a high-context society. You'll hear these B2 Korean grammar patterns frequently in everyday conversations, news analysis, and even debates, as they allow speakers to express strong opinions with appropriate levels of confidence and deference.
Mastering them will not only improve your grammar but also your cultural understanding.

关键例句 (8)

1

이 시간쯤이면 차가 막힐 법해요.

这个时间点，很有可能会堵车。

合乎逻辑的推测: -(으)ㄹ 법하다
2

그 식당은 리뷰가 많아서 맛있을 법해.

那家店评价那么多，应该会很好吃。

合乎逻辑的推测: -(으)ㄹ 법하다
3

James-ga geu don-eul humchyeoss-eul li-ga eops-eoyo.

詹姆斯绝不可能偷了那笔钱。

绝不可能... (-ㄹ 리가 없다)
4

Beolsseo maejin-il li-ga eopseo! Il-bun-bakk-e an jinatneunde.

绝不可能已经卖完了！才过去一分钟啊。

绝不可能... (-ㄹ 리가 없다)
5

그 영화는 재미있을 게 분명해요.

那部电影肯定很有趣。

表达绝对肯定 (-ㄹ/을 게 분명하다)
6

그는 벌써 잤을 게 분명해요.

他肯定已经睡了。

表达绝对肯定 (-ㄹ/을 게 분명하다)
7

어제 비가 많이 `왔을 거예요`. 땅이 다 젖어 있거든요.

昨天肯定下了大雨。地全都是湿的。

逻辑过去推测：“一定做了……” (-았/었을 것이다)
8

민수 씨는 벌써 `퇴근했을 거예요`. 사무실 불이 꺼져 있어요.

民秀想必已经下班了。办公室的灯都关了。

逻辑过去推测：“一定做了……” (-았/었을 것이다)

技巧与窍门 (4)

💡

“理所当然”的语气

当结果对每个人来说都很明显时使用。比如‘他学了一整晚 -> 应该会过’。这带有一种‘自然而然就……’的语气，例如：«합격할 법하다.»
frontend.learn_grammar.from_rule: 合乎逻辑的推测: -(으)ㄹ 법하다
💬

韩剧咆哮模式

这个短语是韩剧反转剧情的标配。当主角得知惊人真相时，常会大喊：«말도 안 돼! 그럴 리가 없어!»（不像话！绝不可能！）
frontend.learn_grammar.from_rule: 绝不可能... (-ㄹ 리가 없다)
🎯

“게” 是关键

记住，“게” 只是 “것이” 穿上了休闲装。在日常对话中使用 “게” 会让你听起来非常自然且流利，比如：«그럴 게 분명해요.»
frontend.learn_grammar.from_rule: 表达绝对肯定 (-ㄹ/을 게 분명하다)
🎯

寻找‘证据’法则

使用这个语法前，先找找线索。如果看到朋友在打哈欠，你可以说：«어제 잠을 못 잤을 거예요.»。如果是毫无根据的瞎猜，用 '-았/었을지도 몰라요' 会更稳妥。
frontend.learn_grammar.from_rule: 逻辑过去推测：“一定做了……” (-았/었을 것이다)

核心词汇 (6)

분명하다 to be clear/certain 이유 reason 교통 체증 traffic jam 인정하다 to admit/acknowledge 가능성 possibility 확실히 certainly/definitely

Real-World Preview

clock

The Late Friend

Review Summary

  • V/A + -ㄹ/을 법하다
  • V/A + -ㄹ/을 리가 없다
  • V/A + -았/었을 것이다

常见错误

The pattern is almost exclusively used with '없다' to show impossibility. Using '있다' makes it a rhetorical question which is much rarer.

Wrong: 그가 올 리가 있어요? (Is there a way he's coming?)
正确: 그가 올 리가 없어요. (There's no way he's coming.)

In spoken Korean, -ㄹ 것이에요 is almost always contracted to -ㄹ 거예요. Using the uncontracted form sounds overly stiff.

Wrong: 어제 갔을 것이에요.
正确: 어제 갔을 거예요.

-기는 하다 feels incomplete without a contrasting clause (하지만/한데). It is used to concede a point before adding a 'but'.

Wrong: 그는 똑똑하기는 해요. (He is smart.)
正确: 그는 똑똑하기는 하지만 공부는 안 해요. (He is smart, but he doesn't study.)

Next Steps

You've just added a layer of sophistication to your Korean that many learners never reach. You are now capable of debating and reasoning like a true B2 speaker!

Watch a Korean mystery drama and narrate your theories using -ㄹ 게 분명해요.

Write 5 sentences about your childhood using -았/었을 것이다 for things you don't remember clearly.

Continue to: Inevitability and Close Calls

快速练习 (10)

修正空格错误。

Find and fix the mistake:

그는성공할법하다.

✓ Correct! ✗ Not quite. Correct answer: 그는 성공할 법하다.
标准空格位于定语词尾 성공할 和 법하다 之间。

frontend.learn_grammar.from_rule: 合乎逻辑的推测: -(으)ㄹ 법하다

哪个句子在逻辑上最符合这个情境？

情境：你朋友说他看到猪在飞。

✓ Correct! ✗ Not quite. Correct answer: 돼지가 날 리가 없어요.
虽然 '날 수 없어요'（不能飞）在事实上是对的，但 '날 리가 없어요'（绝不可能飞）更能表达你对他所说的话的怀疑。

frontend.learn_grammar.from_rule: 绝不可能... (-ㄹ 리가 없다)

完成句子：‘这是一个听起来很合理的场景。’

그것은 그럴 ___ 이야기예요.

✓ Correct! ✗ Not quite. Correct answer: 법한
그럴 법하다 意思是“合理的/很有可能的”。

frontend.learn_grammar.from_rule: 合乎逻辑的推测: -(으)ㄹ 법하다

哪一项最适合：‘既然他练习了这么多，赢也是理所当然的。’

연습을 많이 했으니 ___.

✓ Correct! ✗ Not quite. Correct answer: 이길 법해요
虽然 '이길 것 같아요' 也可以，但 '이길 법해요' 强调了逻辑性（练习多 -> 所以理应赢）。

frontend.learn_grammar.from_rule: 合乎逻辑的推测: -(으)ㄹ 법하다

填空以表达“我确实喜欢，但是...”

피자를 좋아___ 한데 너무 비싸요.

✓ Correct! ✗ Not quite. Correct answer: 기는
要表达承认某事但有保留意见，应使用 «-기는» 模式。

frontend.learn_grammar.from_rule: 用“但是”来承认事实 (-기는 하다)

找出并修正缩写形式中的错误。

한국어가 어렵긴은 하지만 재미있어요.

✓ Correct! ✗ Not quite. Correct answer: 以上两者都正确。
«-긴» 是 «-기는» 的缩写，但你不能把两者叠在一起写成 «긴은»。要么用完整的 «기는»，要么用缩写 «긴»。

frontend.learn_grammar.from_rule: 用“但是”来承认事实 (-기는 하다)

找出句子中的错误。

Find and fix the mistake:

그 사람은 한국 사람일 게 분명하다요.

✓ Correct! ✗ Not quite. Correct answer: 그 사람은 한국 사람일 게 분명해요.
분명하다 的礼貌终结词尾是 분명해요，而不是 분명하다요。

frontend.learn_grammar.from_rule: 表达绝对肯定 (-ㄹ/을 게 분명하다)

使用“知道”（알다）完成句子。

他昨天才刚到。___ ___ ___ ___ 秘密密码！（他绝不可能知道）

✓ Correct! ✗ Not quite. Correct answer: 알 리가 없어
我们使用 '알 리가 없어'（词干 알 + 리가 없다）来表达他不可能知道。

frontend.learn_grammar.from_rule: 绝不可能... (-ㄹ 리가 없다)

填空以表达确信。

내일은 날씨가 ___ 분명해요. (좋다)

✓ Correct! ✗ Not quite. Correct answer: 좋을 게
形容词 '좋다' 有收音，所以接 -을 게。

frontend.learn_grammar.from_rule: 表达绝对肯定 (-ㄹ/을 게 분명하다)

哪句话表达强烈的信念更自然？

你看到餐厅门口排长队，想说味道肯定很好。

✓ Correct! ✗ Not quite. Correct answer: 이 식당은 맛있을 게 분명해요.
-ㄹ 게 분명해요 比 -ㄹ 것 같다 表达的确信度要强得多。

frontend.learn_grammar.from_rule: 表达绝对肯定 (-ㄹ/을 게 분명하다)

Score: /10

常见问题 (6)

可以！使用 -었/았을 법하다 形式。意思是根据现在的证据推测“过去很有可能发生了某事”，例如：«그랬을 법하다.»
그럴 법하다 侧重于逻辑上的合理性。而 그럴 듯하다 虽然也表示“看起来像真的”，但有时带有“听起来挺像那么回事（但不一定真的）”的微妙感觉。
'리' 源自汉字“理”，意思是道理或逻辑。你在 «이해»（理解）或 «요리»（料理）中也能看到它。所以你字面上是在说“没有这个理”。
当然可以！比如 «내가 그럴 리가 없어»（我绝不可能做出那种事）。当你断片了或者被人指控做了完全不符合你性格的事时，就可以这么说。
-ㄹ 것이다 是普通的将来时或简单的猜测。而 -ㄹ 게 분명하다 增加了沉甸甸的“确信感”。就像“他会去”和“我百分之百确信他会去”的区别。«그는 갈 게 분명해요.»
当然可以！使用 -았/었을 게 분명하다。例如：«그는 이미 밥을 먹었을 게 분명해요»（我确信他已经吃过饭了）。
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