A2 · 初级 章节 3

Giving Reasons and Background

5 总规则
54 例句
5 分钟
本章规则 快速练习

Chapter in 30 Seconds

Master the art of linking your thoughts to sound like a natural Korean speaker.

  • Connect sentences to explain your reasons.
  • Provide context to make your stories flow.
  • Distinguish between internal and external causes.
Connect your thoughts, express your world.

你将学到什么

You've built a solid foundation in Korean basics – great job! Now, it's time to add a new layer of sophistication and natural flow to your conversations by mastering how to express reasons and provide essential context, just like a native speaker. This chapter is your key to making your Korean sound more connected and compelling.

Learning Objectives

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

  1. 1
    By the end you will be able to: Use connective endings to explain simple daily situations.

章节指南

Overview

Congratulations on reaching the A2 Korean grammar level! You’ve mastered the basics, and now it’s time to elevate your conversations. This chapter is your gateway to sounding more natural and connected by learning how to articulate reasons and provide essential background information.
Just like in English, native Korean speakers constantly use connectors to link ideas, explain 'why', and set the stage for what they're about to say. Understanding these nuances is crucial for constructing more complex sentences and engaging in meaningful dialogue. We'll explore key grammar points like -아/어서, (으)니까, and -는데/은데, which are indispensable for expressing cause and effect, justifications, and contextual details.
Mastering these structures will significantly enhance your ability to communicate effectively and make your Korean sound much more sophisticated.
This guide focuses on the
Giving Reasons and Background
chapter, which is pivotal for any learner aiming for fluency. By the end of this chapter, you’ll be able to seamlessly connect your thoughts, explain your choices, and add depth to your stories, moving beyond simple sentence structures. These Korean grammar patterns are incredibly common in everyday speech, so understanding them will unlock a vast array of communicative possibilities.
Get ready to transform your conversations and truly connect your ideas, making your Korean flow effortlessly.

How This Grammar Works

In this chapter, we delve into the essential connectors that allow you to express reasons, consequences, and contextual information in Korean. First up is Korean 'Because' & 'So': The Glue of Sentences (-아/어/여서). This versatile connector is used to indicate a cause and effect relationship, or a sequence of events.
The action or state in the first clause is the reason or precedes the action in the second clause. Crucially, you cannot use -아/어서 with commands or suggestions, and the first clause does not take tense marking; the tense is indicated in the final verb of the sentence. For example: 비가 와서 집에 갔어요. (Because it rained, I went home.) or 피곤해서 일찍 잤어요. (Because I was tired, I slept early.)
Next, we explore Giving Reasons: Because/Since ((으)니까). While also meaning 'because' or 'since', (으)니까 often implies that the speaker has just discovered the reason or is giving a reason for a suggestion or command. Unlike -아/어서, you *can* use (으)니까 with commands, suggestions, or proposals.
It also allows for tense marking in the first clause. For instance: 지금 바쁘니까 나중에 전화해 주세요. (Since I'm busy now, please call me later.) or 날씨가 좋으니까 산책할까요? (Since the weather is good, shall we take a walk?)
Finally, we introduce Setting the Scene: Background Context (는데/은데), also known as The Background Connector. This particle doesn't strictly mean 'because' but rather provides background information, context, or a contrast to the main clause. It's incredibly common and helps make your sentences sound natural.
It can also be used to soften a request or introduce a topic. The form depends on the word type: verbs and adjectives ending in a vowel or ㄹ use -는데 (먹는데, 예쁜데), adjectives ending in a consonant use -은데 (좋은데), and nouns use -인데 (학생인데). For example: 저는 한국 사람인데 영어를 공부하고 있어요. (I am Korean, but I am studying English.) or 배고픈데 뭐 먹을까요? (I'm hungry, so what should we eat?) This connector is key for making your A2 Korean sound sophisticated.

Common Mistakes

  1. 1✗ Wrong: 피곤해서 집에 가세요. (Because I'm tired, please go home.)
✓ Correct: 피곤하니까 집에 가세요. (Because you're tired, please go home.)
*Explanation:* -아/어서 cannot be used with commands, suggestions, or proposals in the second clause. Use (으)니까 instead when the first clause is a reason for a command or suggestion.
  1. 1✗ Wrong: 어제는 비가 왔어서 집에 있었어요. (Because it rained yesterday, I stayed home.)
✓ Correct: 어제는 비가 와서 집에 있었어요. (Because it rained yesterday, I stayed home.)
*Explanation:* With -아/어서, the first clause expressing the reason does not take past tense marking. The tense is indicated in the main clause's verb.
  1. 1✗ Wrong: 이 식당은 맛있는는데 사람이 너무 많아요. (This restaurant is delicious, but there are too many people.)
✓ Correct: 이 식당은 맛있는데 사람이 너무 많아요. (This restaurant is delicious, but there are too many people.)
*Explanation:* For adjectives ending in a vowel (like 맛있다), you attach -는데. -은데 is used for adjectives ending in a consonant, and -인데 for nouns.

Real Conversations

A

A

왜 한국어를 배우세요? (Why are you learning Korean?)
B

B

한국 드라마를 좋아해서 배우고 있어요. (Because I like Korean dramas, I am learning it.)
A

A

저녁에 뭐 먹을까요? 배고픈데... (What shall we eat for dinner? I'm hungry...)
B

B

비빔밥 어때요? 맛있을 것 같아요. (How about bibimbap? It seems delicious.)
A

A

지금 갈까요? 비가 오는데 우산이 없어요. (Shall we go now? It's raining, but I don't have an umbrella.)
B

B

지금 가기 어려우니까 조금 기다려요. (Since it's hard to go now, let's wait a bit.)

Quick FAQ

Q

What's the main difference between -아/어서 and (으)니까 when expressing reasons in A2 Korean grammar?

-아/어서 typically states a direct cause-and-effect and cannot be used with commands/suggestions. (으)니까 is often used when the reason leads to a suggestion, command, or a newly discovered fact, and it can take tense marking in the first clause.

Q

Can -는데/은데 be used to express a reason, or is it only for background context?

While its primary role is to provide background or contrast, -는데/은데 can sometimes imply a soft reason or justification, especially when setting up a question or a request, but it's not a direct 'because' like -아/어서 or (으)니까.

Q

How do I conjugate -는데/은데 with different types of words?

For verbs and adjectives ending in a vowel or ㄹ, use -는데 (e.g., 가다 → 가는데, 예쁘다 → 예쁜데). For adjectives ending in a consonant, use -은데 (e.g., 좋다 → 좋은데). For nouns, use -인데 (e.g., 학생 → 학생인데).

Q

Is -아/어서 only for reasons, or does it have other uses in Korean grammar?

Besides reasons, -아/어서 is also commonly used to indicate a sequence of actions, where the first action must occur before the second. For example, 집에 가서 밥을 먹었어요. (I went home and then ate.)

Cultural Context

These grammatical connectors are vital for making your Korean sound polite and natural. -는데/은데 is particularly useful for softening requests or introducing a topic without being too abrupt, showing consideration for the listener. Using (으)니까 for suggestions or commands is very common and less direct than simply stating the command, which is often preferred in Korean communication for its indirectness.
Mastering these patterns helps you integrate into the nuances of Korean conversational flow, making your speech more engaging and less like a textbook.

关键例句 (8)

1

배가 고파서 식당에 갔어요.

我饿了，所以去了餐厅。

韩语中的“因为”与“所以”：句子的粘合剂 (-开/어/여서)
2

늦어서 정말 죄송합니다.

很抱歉我迟到了。

韩语中的“因为”与“所以”：句子的粘合剂 (-开/어/여서)
3

I was hungry so I ordered pizza.

因为肚子饿，所以点了披萨。

连接理由与结果：因为……所以 (-아/어서)
4

I am sorry that I am late.

对不起，我迟到了。

连接理由与结果：因为……所以 (-아/어서)
5

The weather is good, so let's go for a walk.

天气这么好，我们去散步吧。

表达原因：因为/既然 ((으)니까)
6

I'm busy now, so please call me later.

我现在很忙，请稍后给我打电话。

表达原因：因为/既然 ((으)니까)
7

배가 고픈데 식당에 갈까요?

我肚子饿了，我们要去餐厅吗？

铺垫背景：情况说明 (는데/은데)
8

지금 바쁜데 나중에 전화할게요.

我现在很忙，晚点给你打电话。

铺垫背景：情况说明 (는데/은데)

技巧与窍门 (4)

⚠️

不能用过去时！

记住，在-서前面永远不能加-었-！就算你谈论的是昨天发生的事情，也要保持动词的原形。时态由句末的动词决定哦。就像这样：“어제 친구를 만나서 영화를 봤어요.”
frontend.learn_grammar.from_rule: 韩语中的“因为”与“所以”：句子的粘合剂 (-开/어/여서)
⚠️

别用过去式！

千万别说 «가았어서»。简单说 «가서» 就行，整句话的时间感由句尾动词决定。«배가 고파서 먹었어요.»
frontend.learn_grammar.from_rule: 连接理由与结果：因为……所以 (-아/어서)
⚠️

道歉大忌

千万别在道歉或感谢时用 (으)니까，这听起来像在找借口。说对不起要用 «늦어서 죄송합니다»。
frontend.learn_grammar.from_rule: 表达原因：因为/既然 ((으)니까)
🎯

“贴纸”法则

把 는데/은데 想象成连接两个想法的贴纸。如果没有它，句子听起来会很生硬冷淡。加上它，语气就顺滑多了！比如：“날씨가 좋은데 산책 가요.”
frontend.learn_grammar.from_rule: 铺垫背景：情况说明 (는데/은데)

核心词汇 (5)

피곤하다 (pigonhada) to be tired 비가 오다 (biga oda) to rain 숙제 (sukje) homework 날씨 (nalssi) weather 가게 (gage) store

Real-World Preview

shopping-cart

Shopping for dinner

Review Summary

  • Verb/Adj + -아/어/여서
  • Verb/Adj + -(으)니까
  • Verb/Adj + -는데/은데

常见错误

You must contract the verb stem correctly. 오 + 아서 becomes 와서.

Wrong: 비가 오어서 우산이 필요해요.
正确: 비가 와서 우산이 필요해요.

When making a suggestion or request, use -(으)니까 instead of -어서.

Wrong: 피곤해서 영화를 볼까요?
正确: 피곤하니까 영화를 볼까요?

Ensure the subject particle is included or the context is clear before the -는데 ending.

Wrong: 숙제 있는데, 어려워요.
正确: 숙제가 있는데, 어려워요.

Next Steps

You've done an amazing job! Keep practicing these connectors and watch your Korean flow naturally.

Write a diary entry

Continue to: Describing People and Things

快速练习 (10)

找出并修正这个句子中的错误。

Find and fix the mistake:

날씨가 좋아서 산책합시다!

✓ Correct! ✗ Not quite. Correct answer: 날씨가 좋으니까 산책합시다!
-아서不能和建议句（-합시다）一起使用，应该用-으니까。

frontend.learn_grammar.from_rule: 韩语中的“因为”与“所以”：句子的粘合剂 (-开/어/여서)

请用 ‘가다’ (去) 的正确形式填空。

백화점에 ___, 같이 갈래요?

✓ Correct! ✗ Not quite. Correct answer: 가는데
가다 是动词，所以无论有没有收音，都要加 는데。

frontend.learn_grammar.from_rule: 铺垫背景：情况说明 (는데/은데)

用动词‘가다’（去）的正确形式填空。

학교에 ____ 공부를 해요.

✓ Correct! ✗ Not quite. Correct answer: 가서
在这个连续动作（去学校然后学习）中，‘가서’是自然的连接词。

frontend.learn_grammar.from_rule: 韩语中的“因为”与“所以”：句子的粘合剂 (-开/어/여서)

哪个句子在语法上是正确的？

选择正确使用形容词 ‘작다’ (小) 的句子。

✓ Correct! ✗ Not quite. Correct answer: 이 방은 작은데 깨끗해요.
작다 是有收音的形容词，所以必须加 은데。

frontend.learn_grammar.from_rule: 铺垫背景：情况说明 (는데/은데)

找出并纠正这个道歉句中的错误。

Find and fix the mistake:

도와주니까 감사합니다.

✓ Correct! ✗ Not quite. Correct answer: 도와줘서 감사합니다.
对于社交礼仪、感谢和道歉，应该使用 -아/어서，而不是 (으)니까。

frontend.learn_grammar.from_rule: 表达原因：因为/既然 ((으)니까)

哪个句子在下命令时语法正确？

选择“因为冷，请关窗户”的正确表达。

✓ Correct! ✗ Not quite. Correct answer: 추우니까 창문을 닫으세요.
在后半句是命令句 (-으세요) 时，必须使用 (으)니까。另外 '춥다' 是 ㅂ 不规则词，变为 '추우니까'。

frontend.learn_grammar.from_rule: 表达原因：因为/既然 ((으)니까)

找出形容词变型中的错误。

날씨가 춥는데 따뜻하게 입어.

✓ Correct! ✗ Not quite. Correct answer: 날씨가 추운데 따뜻하게 입어.
'춥다' (冷) 是 ㅂ 不规则形容词。去掉 ㅂ，加 우，再加 -ㄴ데。结果是 '추운데'。

frontend.learn_grammar.from_rule: 万能背景连接词 (는데/은데)

哪句话正确解释了原因？

选择“因为累了所以睡觉了”的自然韩语表达。

✓ Correct! ✗ Not quite. Correct answer: 피곤해서 잤어요.
-어서 前面不能用过去式 (했)，所以 «피곤해서» 是唯一正确的形式。

frontend.learn_grammar.from_rule: 连接理由与结果：因为……所以 (-아/어서)

找出这个命令句中的错误。

날씨가 추워서 옷을 따뜻하게 입으세요.

✓ Correct! ✗ Not quite. Correct answer: 추워서 → 추우니까
-어서 不能用于命令句（如“请穿上”），必须换成 -(으)니까。

frontend.learn_grammar.from_rule: 连接理由与结果：因为……所以 (-아/어서)

哪句话正确地设定了背景语境？

选择最自然的句子表达：“下雨了，带把伞吧。”

✓ Correct! ✗ Not quite. Correct answer: 비가 오는데 우산을 가져가세요.
-는데 非常适合为建议（带把伞）设定背景（正在下雨）。-지만 的转折语气太强了。

frontend.learn_grammar.from_rule: 万能背景连接词 (는데/은데)

Score: /10

常见问题 (6)

只有当动作逻辑相关或发生在同一地点时才可以。例如，“我去了商店，然后买了牛奶”是正确的，因为它们相关。“마트에 가서 우유를 샀어요.”如果是不相关的“和”，就要用“-고”。
这是“하여서”的缩略形式。在现代韩语口语中，“하여서”几乎不用，所以直接记住“해서”是标准形式就可以了。
-어서 用于描述自然的因果事实。而 -(으)니까 更多用于表达主观想法，或者当你想要下命令、提建议的时候，比如 «비가 오니까 우산을 쓰세요»。
不行哦！如果是提议“咱们一起去吧”，必须用 -(으)니까。«날씨가 좋으니까 같이 가요» 是正确的。
不一定。关键在于功能：(으)니까 用于主观原因和命令，而 -아/어서 用于客观原因和社交礼仪。比如 «비가 오니까 가지 마세요» 就很自然。
当然可以！比如 «예쁘니까» (因为漂亮) 或 «싸니까» (因为便宜)，用法和动词完全一样。
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