B1 · Intermédiaire Chapitre 7

Plans, Decisions, and Obligations

4 Règles totales
44 exemples
5 min
Règles dans ce chapitre Pratique rapide

Chapter in 30 Seconds

Master the art of planning, deciding, and committing in fluent, natural Korean.

  • Express your personal intentions and future plans.
  • Communicate firm decisions and life choices.
  • State personal obligations and necessities clearly.
Turn your thoughts into clear, decisive action.

Ce que tu vas apprendre

Hey friend! Ready to level up your Korean conversations? This chapter isn't just about wanting something anymore; you're going to learn how to express your plans, firm decisions, and even obligations just like a real Korean speaker. Here, we'll start with initial intentions and thoughts using -(으)려고 하다 (e.g., "I'm thinking of going to Korea

) and learn how to turn them into solid, fixed decisions with 기로 하다 (e.g.,
I've decided to go to Korea and bought my ticket!"). See the difference? You won't be speaking vaguely anymore; your intentions will be crystal clear! Next, we move on to a sense of personal responsibility; those moments when you feel
I gotta study more
yourself, or tell a friend
You really ought to do this
using -아/어야지. These aren't just simple plans; they're a kind of internal commitment! And finally, you'll learn how to objectively state whether an action is necessary or not with -(으)ㄹ 필요가 있다/없다. For instance, when you want to ask,
Do I need to go to work today?
or say, "It's necessary to buy this." With these five golden patterns, you'll be able to speak much more naturally in everyday situations. Imagine planning a trip with friends, or giving practical advice to someone in a tricky situation. This chapter will help you avoid hesitation and express yourself clearly and assertively. So let's go, let's master Korean like it's second nature!

Learning Objectives

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

  1. 1
    By the end you will be able to: Use planning and obligation patterns to describe a weekend schedule to a friend.

Guide du chapitre

Overview

Welcome to your next step in mastering Korean grammar! At the B1 Korean level, you're ready to move beyond basic statements and express yourself with greater nuance and precision. This chapter is your key to unlocking more natural and assertive communication, allowing you to articulate your intentions, firm up your decisions, and even express obligations, just like a native speaker.
No more vague wishes – your plans will be crystal clear!
We're going to explore four incredibly useful Korean grammar patterns that will elevate your conversations. You'll learn how to express initial thoughts and intentions using -(으)려고 하다, transform those thoughts into concrete decisions with -기로 하다, talk about what you ought to or have to do with -아/어야지, and objectively state necessities using -(으)ㄹ 필요가 있다/없다. These structures are fundamental for discussing future events, making arrangements, and giving advice in everyday scenarios.
By the end of this guide, you'll be able to confidently plan a trip, discuss responsibilities, and even offer practical suggestions to friends. This isn't just about memorizing rules; it's about gaining the tools to engage more deeply in Korean conversations. Get ready to sound more authentic and express yourself with conviction!

How This Grammar Works

Let's dive into the core of how these powerful Korean grammar patterns function, giving you the ability to express plans, decisions, and obligations with ease.
  1. 1Intention & Plans: -(으)려고 하다
This pattern expresses an intention, a plan, or what one is thinking of doing. It's often a preliminary thought rather than a firm decision.
* If the verb stem ends in a vowel or ㄹ, use -려고 하다.
* If the verb stem ends in a consonant (not ㄹ), use -으려고 하다.
* Example: 저는 한국어를 배우려고 해요. (I am thinking of learning Korean.)
* Example: 친구를 만나려고 했어요. (I was planning to meet a friend.)
  1. 1Decided to / Planned to: -기로 하다
This structure indicates a firm decision or an agreement made. It's stronger than -(으)려고 하다 and implies a commitment.
* Attach -기로 하다 directly to the verb stem.
* Example: 우리는 내일 일찍 만나기로 했어요. (We decided to meet early tomorrow.)
* Example: 다음 주부터 운동하기로 했어요. (I decided to exercise starting next week.)
  1. 1I Ought To / I Gotta: -아/어야지
This pattern expresses a personal sense of obligation, a strong suggestion, or a self-realization of what one should or must do. It often carries a nuance of
I really ought to...
or I gotta...
* If the verb stem ends in ㅏ or ㅗ, use -아야지.
* If the verb stem ends in other vowels, use -어야지.
* If the verb is 하다, it becomes 해야지.
* Example: 이제 숙제를 끝내야지. (I really ought to finish my homework now.)
* Example: 다음부터는 더 열심히 공부해야지. (I gotta study harder next time.)
  1. 1Need to / No need to: -(으)ㄹ 필요가 있다/없다
This pattern objectively states whether something is necessary or not. It's about
there is a need to
or
there is no need to,
rather than a personal desire.
* If the verb stem ends in a vowel or ㄹ, use -ㄹ 필요가 있다/없다.
* If the verb stem ends in a consonant (not ㄹ), use -을 필요가 있다/없다.
* Example: 지금 걱정할 필요가 없어요. (There's no need to worry now.)
* Example: 비행기 표를 예매할 필요가 있어요. (It's necessary to book the plane ticket.)

Common Mistakes

  1. 1✗ Wrong: 저는 한국에 가려고 했어요. (when you've already bought tickets)
✓ Correct: 저는 한국에 가기로 했어요. (I decided to go to Korea.)
*Explanation:* -(으)려고 하다 implies an intention or a plan that might still be flexible. If you've made a firm decision, like buying tickets, -기로 하다 is the correct and more natural choice to express that commitment.
  1. 1✗ Wrong: 나는 오늘 일해야지. (when stating a simple fact about needing to work)
✓ Correct: 나는 오늘 일해야 해요. (I have to work today.) OR 나는 오늘 일할 필요가 있어요. (It's necessary for me to work today.)
*Explanation:* -아/어야지 carries a strong personal conviction or self-admonishment, like I gotta work! or
I really should work!
For a neutral statement of obligation or necessity, -아/어야 하다 or -(으)ㄹ 필요가 있다 are more appropriate.
  1. 1✗ Wrong: 저는 이 책을 살 필요가 있어요. (when you simply want to buy the book)
✓ Correct: 저는 이 책을 사고 싶어요. (I want to buy this book.)
*Explanation:* -(으)ㄹ 필요가 있다 indicates objective necessity ("It's necessary to buy this book for the class"). If it's just a personal desire, use -고 싶다 (
I want to buy this book
).

Real Conversations

A

A

주말에 뭐 할 거예요? (What are you going to do this weekend?)
B

B

친구랑 영화 보러 가려고 해요. (I'm thinking of going to see a movie with a friend.)
A

A

언제 한국어를 공부하기 시작했어요? (When did you start studying Korean?)
B

B

작년부터 매일 한 시간씩 공부하기로 했어요. (I decided to study an hour every day since last year.)
A

A

내일 회의에 꼭 참석해야 할까요? (Do I absolutely have to attend the meeting tomorrow?)
B

B

아니요, 당신은 참석할 필요가 없어요. 제가 대신 갈게요. (No, you don't need to attend. I'll go instead.)
A

A

너무 피곤해요. (I'm so tired.)
B

B

그럼 이제 집에 가서 좀 쉬어야지. (Then you really ought to go home and rest now.)

Quick FAQ

Q

What's the main difference between -(으)려고 하다 and -기로 하다 in B1 Korean grammar?

-(으)려고 하다 expresses an initial intention or plan ("I'm thinking of doing X

), while -기로 하다 signifies a firm decision or agreement that has been made (
I've decided to do X").

Q

Can -아/어야지 be used to tell someone else what they ought to do?

Yes, it can, but it often carries a strong, sometimes slightly informal, tone of suggestion or exhortation, similar to You really should... or You gotta... It's commonly used with close friends or in self-talk.

Q

Is -(으)ㄹ 필요가 있다 interchangeable with -아/어야 하다?

While both express necessity, -(으)ㄹ 필요가 있다 highlights the objective need or requirement for something, whereas -아/어야 하다 emphasizes a stronger, more direct obligation or must-do.

Cultural Context

In Korean culture, expressing plans and decisions often reflects a blend of personal intention and consideration for others. While -(으)려고 하다 allows for a soft declaration of intent, -기로 하다 solidifies commitments, which is highly valued. The use of -아/어야지 often signifies a strong personal resolve or a heartfelt, sometimes slightly informal, piece of advice.
-(으)ㄹ 필요가 있다/없다 provides an objective and polite way to discuss necessities, fitting well within a communication style that values clarity without being overly demanding. These patterns help navigate social interactions smoothly, whether you're making plans with friends or discussing responsibilities.

Exemples clés (4)

1

지금 막 나가려고 했어요.

J'allais justement sortir.

Intention et Projets : Je prévois de... (-(으)려고 하다)
2

이번 주말에 쇼핑하려고 해요.

Je compte faire du shopping ce week-end.

Intention et Projets : Je prévois de... (-(으)려고 하다)
3

이제 슬슬 가야지.

Je devrais vraiment y aller maintenant.

Je devrais / Il faut que je (-아야지)
4

학생이면 공부를 해야지!

Si t'es étudiant, tu dois évidemment étudier !

Je devrais / Il faut que je (-아야지)

Conseils et astuces (4)

🎯

Le raccourci des textos

Dans les messages entre amis, on laisse souvent tomber le '하다'. Si on te demande ce que tu fais, réponds juste «자려고» pour dire que tu vas dormir.
frontend.learn_grammar.from_rule: Intention et Projets : Je prévois de... (-(으)려고 하다)
💬

La promesse à la coréenne

Au resto, on demande souvent «결정했어?» pour la commande, mais pour un plan fait à l'avance, on dira : «뭐 먹기로 했어?»
frontend.learn_grammar.from_rule: Décidé de / Prévu de (-기로 하다)
💬

Le style 'vieux sage'

Si tu soupires en disant ça tout seul, t'auras l'air d'un oncle fatigué après le travail : «에휴, 이제 슬슬 가야지...»
frontend.learn_grammar.from_rule: Je devrais / Il faut que je (-아야지)
💡

Zappe la particule

À l'oral avec tes potes, laisse tomber le '가'. Dis juste «할 필요 없어» au lieu de la version longue. C'est beaucoup plus fluide ! «할 필요 없어».
frontend.learn_grammar.from_rule: Avoir besoin de / Pas besoin de (을 필요가 있다)

Vocabulaire clé (5)

결심하다 (gyeolsimhada) to decide 계획 (gyehoek) plan 책임 (chaegim) responsibility 필요 (pilyo) necessity 생각하다 (saenggakhada) to think

Real-World Preview

calendar

Planning the Weekend

Review Summary

  • Verb + (으)려고 하다
  • Verb + 기로 하다
  • Verb + -아/어야지
  • Verb + (으)ㄹ 필요가 있다

Erreurs courantes

Decisions are usually completed actions, so use past tense.

Wrong: 먹기로 해요 (I decided to eat - when already done)
Correct: 먹기로 했어요 (I decided to eat)

Double-check the negative vs positive ending.

Wrong: 갈 필요가 없어요 (I need to go)
Correct: 갈 필요가 있어요 (I need to go)

Do not add '하다' to -아/어야지; it is already a complete thought.

Wrong: 공부해야지 하다
Correct: 공부해야지

Next Steps

You've done an incredible job today! Keep practicing these patterns, and you'll soon be speaking with the confidence of a native speaker.

Record yourself talking about your plans for the next week.

Continue to: Describing States and Completed Actions

Pratique rapide (6)

Complète la phrase avec la forme correcte pour 'rentrer à la maison'.

Il est tard, je dois vraiment ___ maintenant. (집에 ___.)

✓ Correct! ✗ Not quite. Correct answer: 가야지
'가야지' exprime l'obligation ou l'intention personnelle de partir parce qu'il se fait tard.

frontend.learn_grammar.from_rule: Je devrais / Il faut que je (-아야지)

Trouve l'erreur dans cette phrase.

케이크를 만들으려고 해요.

✓ Correct! ✗ Not quite. Correct answer: 만들려고 해요
Pour les verbes en 'ㄹ' comme '만들다', on n'ajoute pas de '으'. On dit '만들려고'.

frontend.learn_grammar.from_rule: Intention et Projets : Je prévois de... (-(으)려고 하다)

Quelle phrase signifie correctement 'Je compte lire un livre' ?

Choisis la bonne phrase :

✓ Correct! ✗ Not quite. Correct answer: 책을 읽으려고 해요.
'읽다' (lire) se termine par une consonne, il faut donc utiliser '-으려고' pour la liaison.

frontend.learn_grammar.from_rule: Intention et Projets : Je prévois de... (-(으)려고 하다)

Corrige le niveau de politesse.

En parlant à un professeur : '선생님, 저도 가야지.'

✓ Correct! ✗ Not quite. Correct answer: 선생님, 저도 가야지요.
Quand on s'adresse à un supérieur, il faut ajouter '요'. '가야지요' est la forme polie correcte.

frontend.learn_grammar.from_rule: Je devrais / Il faut que je (-아야지)

Quelle phrase sonne comme une résolution ferme envers soi-même ?

Tu veux dire : 'Je dois me lever tôt demain !'

✓ Correct! ✗ Not quite. Correct answer: 내일 일찍 일어나야지!
L'option 2 utilise '-아야지', ce qui montre une forte détermination personnelle.

frontend.learn_grammar.from_rule: Je devrais / Il faut que je (-아야지)

Complète la phrase avec la bonne forme d'intention.

저는 내년에 한국에 ___ 해요. (가다 - aller)

✓ Correct! ✗ Not quite. Correct answer: 가려고
Le verbe '가다' finit par une voyelle, donc on ajoute simplement '-려고'.

frontend.learn_grammar.from_rule: Intention et Projets : Je prévois de... (-(으)려고 하다)

Score: /6

Questions fréquentes (6)

C'est simple : «-(으)러» s'utilise uniquement avec les verbes de mouvement (aller/venir) pour dire 'aller POUR faire'. «-(으)려고» exprime l'intention pure, peu importe le verbe qui suit, comme dans «살 빼려고 운동해요».
En général, on ne dit pas «-(으)려고 할 거예요». Ça sonne bizarre et redondant. Contente-toi de «-(으)려고 해요» car l'intention existe déjà maintenant.
Pas directement. Tu ne peux pas 'décider d'être heureux'. Tu dois 'décider de *devenir* heureux'. Change l'adjectif en verbe avec ~아/어지다 d'abord : «행복해지기로 했어요».
-(으)려고 하다 est une intention ('je pense y aller'). 기로 하다 est une décision ferme ('j'ai décidé d'y aller'). C'est beaucoup plus fort.
C'est proche, mais '-아/어야 해요' est plus factuel. '-아/어야지' vient plus de ton jugement personnel ou de ta volonté, comme dans «매일 운동을 해야지».
Oui ! Si tu dis «열심히 공부해야지», ça veut dire que tu as l'intention ferme de bien bosser. C'est plus fort qu'un simple futur.
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