The Korean phrase 잘 들으세요 means “Please listen carefully” or “Pay attention” in English. It is often used in formal or polite situations when asking someone to focus on what is being said.

Examples:

In a classroom setting:
선생님: 잘 들으세요! 이 부분은 시험에 나옵니다.
Teacher: Listen carefully! This part will be on the test.

Before giving instructions:
잘 들으세요. 먼저 버튼을 누르고 5초 기다리세요.
Listen carefully. First, press the button and wait for 5 seconds.

When giving important news:
잘 들으세요. 중요한 발표가 있습니다.
Listen carefully. There is an important announcement.

잘 모르겠어요 means “I don’t really know” or “I’m not sure.” It is a polite way to express uncertainty or lack of knowledge about a topic.

Literally it means
good not-know-likely – it seems I’m good in not knowing it 😉

Uses of 잘 모르겠어요

When unsure about something
A: 이 문제의 답을 아세요? (Do you know the answer to this question?)
B: 잘 모르겠어요. (I’m not sure.)

When needing clarification
A: 이 설명 이해했어요? (Did you understand this explanation?)
B: 잘 모르겠어요. 조금 더 설명해 주세요. (I’m not sure. Please explain a bit more.)

Politely expressing doubt
A: 내일 날씨가 어떨까요? (What do you think the weather will be like tomorrow?)
B: 잘 모르겠어요. 뉴스에서 확인해 볼게요. (I’m not sure. I’ll check the news.)

See 모르다

The Korean adjective 재미있다 (jae-mi-it-da) means “to be fun” or “to be interesting.” It can describe something enjoyable, entertaining, or engaging.

Example Sentences:

이 영화 정말 재미있어요! (i yeong-hwa jeong-mal jae-mi-it-eo-yo!) – This movie is really fun

한국어 공부가 재미있어요. (han-gu-geo gong-bu-ga jae-mi-it-eo-yo.) – Studying Korean is interesting.

오늘 수업은 정말 재미있었어요. (o-neul su-eo-beun jeong-mal jae-mi-it-eo-sseo-yo.) – Today’s class was really fun.

이 책이 재미있어서 계속 읽고 싶어요. (i chae-gi jae-mi-it-eo-seo gye-sok ilk-go sip-eo-yo.) – This book is interesting, so I want to keep reading it.

어제 친구들과 재미있는 시간을 보냈어요. (eo-je chin-gu-deul-gwa jae-mi-it-neun si-gan-eul bo-naet-eo-yo.) – I had a fun time with my friends yesterday.

The polite form of 재미있다 is 재미있어요 (jae-mi-it-eo-yo). 

Literally a active,positive good person

Part of the four-part framework (적극선인, 소극선인, 적극악인, 소극악인) that categorizes people’s moral attitudes.

Breakdown of 적극선인

적극 (積極) = active, positive, proactive.
선인 (善人) = good person, virtuous person.
Put together: 적극선인 means “an active good person” — someone who not only avoids doing harm but also actively does good, helps others, and takes initiative in virtuous actions.

It’s often contrasted with 소극선인 (passive good person), who is good but doesn’t take active steps to help.

Example Sentences

그는 어려운 사람들을 돕는 적극선인이다. → He is an active good person who helps those in need.

사회에는 소극선인보다 적극선인이 더 필요하다. → Society needs active good people more than passive ones.

적극선인은 세상을 변화시키는 힘을 가진다. → Active good people have the power to change the world.

그녀는 봉사활동에 앞장서는 적극선인으로 알려져 있다. → She is known as an active good person who leads volunteer work.

Nuance

적극선인 emphasizes initiative — not just being “good” but doing good.

It’s often used in moral philosophy, religion, or social ethics discussions.

In everyday speech, people might not say “적극선인” often, but they’ll describe someone as 적극적으로 착한 일을 하는 사람 (a person who actively does good deeds).

Breakdown of 적극악인 (積極惡人)

적극 (積極) = active, proactive, deliberate.
악인 (惡人) = bad person, evil person.
Put together: 적극악인 means “an active bad person” — someone who deliberately and actively does harm, spreads evil, or causes trouble.

It’s the opposite of 적극선인 (active good person) and is considered the most dangerous type in the four-part moral framework. ( see .. The Four Types of People )

Example Sentences

적극악인은 사회에 큰 해를 끼친다. → Active bad people cause great harm to society.
그 범죄자는 적극악인으로 불린다. → That criminal is called an active bad person.
적극악인은 자신의 이익을 위해 남을 속이고 해친다. → Active bad people deceive and harm others for their own gain.
역사 속에는 적극악인들이 전쟁과 혼란을 일으켰다. → In history, active bad people have caused wars and chaos.

A 소극악인 (passive bad person) may simply ignore wrongdoing or neglect responsibility.

A 적극악인, however, takes initiative in doing harm — lying, cheating, exploiting, or spreading violence.

In moral philosophy, they are considered the most destructive type because their actions actively worsen society.

적극적이다 (jeokgeukjeogida) means “to be proactive” or “to be active” . It describes someone who takes initiative, engages actively, or approaches things with enthusiasm.

Usage Examples:

그는 수업 시간에 발표에 적극적이다. → “He is proactive in class presentations.”
적극적인 태도가 성공을 가져온다. → “A proactive attitude leads to success.”
그녀는 토론에서 적극적으로 의견을 말했다. → “She actively expressed her opinion in the discussion.”

It differs from 활발하다 (hwalbalhada), which means “to be lively or energetic”—적극적이다 focuses more on initiative and engagement, while 활발하다 describes general liveliness

It’s the opposite of 소극적이다 (sogeukjeogida) which means “to be passive” or “reserved” in Korean. It describes someone who is hesitant, avoids taking initiative, or prefers to stay in the background rather than actively engaging in situations.

“조명” (jo-myeong) means “lighting” or “illumination” in Korean. It refers to the use of light sources to brighten a space, whether for practical, decorative, or artistic purposes.

Types of Lighting:

직접 조명 (jik-jeop jo-myeong) – Direct lighting, where light shines directly onto a surface.
간접 조명 (gan-jeop jo-myeong) – Indirect lighting, where light is reflected off walls or ceilings for a softer effect.
무드등 (mu-deu-deung) – Mood lighting, used to create a cozy or atmospheric ambiance.
식탁등 (sik-tak-deung) – Dining table lights, often pendant lamps that hang above a table.
거실등 (geo-sil-deung) – Living room lights, typically ceiling fixtures or floor lamps.
독서등 (dok-seo-deung) – Reading lights, designed to provide focused illumination for reading.

촛불 (chot-bul) – Candlelight, often used for a soft, warm glow.
촛불을 켜니까 분위기가 더 아늑해졌어요. (chot-bul-eul kye-ni-kka bun-wi-gi-ga deo a-neuk-hae-jyeoss-eo-yo.) – The atmosphere became cozier when I lit the candles.

횃불 (hoet-bul) – Torch, used for guiding the way in darkness.
옛날 사람들은 횃불로 길을 밝혔어요. (yet-nal sa-ram-deul-eun hoet-bul-lo gil-eul bal-kyeoss-eo-yo.) – In the past, people used torches to light the way.

난로 불빛 (nan-lo bul-bit) – The glow from a fireplace, creating a warm ambiance.
벽난로의 불빛이 너무 따뜻해 보여요. (byeok-nan-lo-ui bul-bit-i neo-mu tta-tteut-hae bo-yeo-yo.) – The glow of the fireplace looks so warm.

캠프파이어 (kaem-peu-pa-i-eo) – Campfire, often used for outdoor lighting and warmth.

See also 불을 켜다 and 불을 끄다

조용히 하세요 means “Please be quiet” or “Keep silent.” It is a polite command used in situations where silence or lowering one’s voice is needed.

Breakdown:
조용히 (joyonghi) → “Quietly”
하세요 (haseyo) → “Please do” (polite request)

Examples:

In a classroom setting:
선생님: 조용히 하세요! 수업을 시작할게요.
Teacher: Please be quiet! The lesson is starting.

In a library:
여기는 도서관이에요. 조용히 하세요.
This is a library. Please be quiet.

At home when someone is sleeping:
아기가 자고 있어요. 조용히 하세요.
The baby is sleeping. Please be quiet.

The noun 좋아함 comes from the verb 좋아하다, which means “to like” or “to be fond of.”
In noun form, 좋아함 refers to the act of liking something or affection toward something.

Usage of 좋아함

Expressing preference or affection
그의 음악에 대한 좋아함이 커요. → “His love for music is big.”

Talking about likes or interests
책을 읽는 좋아함이 있어요. → “I have a liking for reading books.”

Describing someone’s feelings
그녀는 꽃에 대한 좋아함을 표현했어요. → “She expressed her fondness for flowers.”

It is similar to 좋아하기, but 좋아함 is more commonly used in written or formal contexts.