chinguhanteseo joheun sosigeul deureoseo jeongmal gippeoyo.

친구한테서 means from a friend.

• 친구 = friend
• 한테서 = from someone

In Korean, -한테서 is commonly used to show the source of something when it comes from a person, especially in everyday speech.

So here, 친구한테서 좋은 소식을 들었어요 would mean I heard good news from a friend.

Related forms:

• 친구한테 = to a friend / from a friend in some contexts, but -한테서 makes the from meaning clearer
• 친구에게서 = also from a friend, but a bit more formal
• 친구로부터 = very formal/literary, also from a friend

It breaks down like this:

• 좋은 = good
• 소식 = news
• -을 / -를 = object particle

Because 소식 ends in a consonant, it takes -을, so you get 소식을.

Also, 좋은 is the adjective 좋다 changed into a form that can describe a noun:

• 좋다 = to be good
• 좋은 소식 = good news

So 좋은 소식을 듣다 literally means to hear good news.

This is because 듣다 is an irregular ㄷ verb.

The dictionary form is:

• 듣다 = to hear, to listen

When a vowel-starting ending is attached, the ㄷ often changes to ㄹ:

• 듣다
  • -어서 → 들어서
• 듣다
  • -어요 → 들어요
• 듣다
  • -은 → 들은

So 들어서 is the correct form.

This same pattern happens with some other ㄷ-irregular verbs, such as:

• 걷다 → 걸어요
• 묻다 → 물어요 (for the verb meaning to ask)

Here, -아서/어서 connects two parts of the sentence and usually means because or so.

So:

• 좋은 소식을 들어서 정말 기뻐요
  = I’m really happy because I heard good news

In many cases, -아서/어서 can also imply after doing something, depending on context. But in this sentence, the most natural interpretation is reason/cause:

• I heard good news, so I’m really happy
• Because I heard good news, I’m really happy

This comes from the adjective 기쁘다, meaning to be glad / happy.

It is a ㅡ-irregular adjective. When -어요 is added, the ㅡ drops and the remaining vowel determines the final form:

• 기쁘다
  • -어요 → 기뻐요

So 기뻐요 is the natural polite form.

Other examples of this pattern:

• 바쁘다 → 바빠요 = to be busy
• 슬프다 → 슬퍼요 = to be sad

Because the sentence is describing a current emotional state.

The hearing happened first, and now the speaker is happy as a result. So Korean naturally uses present tense for the current feeling:

• 좋은 소식을 들어서 정말 기뻐요
  = I’m really happy because I heard good news

If the speaker wanted to talk about a feeling that was only true in the past, they could say:

• 좋은 소식을 들어서 정말 기뻤어요
  = I was really happy because I heard good news

So 기뻐요 emphasizes how I feel now.

Korean often leaves out the subject when it is clear from context.

In English, you usually need to say I’m really happy, but in Korean, the subject is often omitted if everyone already understands who is being talked about.

So this sentence is naturally understood as something like:

• (저는) 친구한테서 좋은 소식을 들어서 정말 기뻐요.
• (I) am really happy because I heard good news from a friend.

Adding 저는 is possible, but not necessary unless you want emphasis or contrast.

정말 often means really and is commonly used to strengthen emotion or certainty.

In this sentence:

• 정말 기뻐요 = I’m really happy

It can sometimes feel like English really, truly, or so, depending on context.

Similar words:

• 아주 = very
• 매우 = very, quite formal
• 너무 = very / too, very common in speech
• 정말 = really

So 정말 기뻐요 sounds very natural and emotional.

Yes, 기뻐요 is a very natural choice here.

• 기쁘다 / 기뻐요 = to feel glad, pleased, delighted
  Often used for happiness caused by a specific event
• 행복하다 / 행복해요 = to be happy in a broader, deeper sense
  More like happy in life, feeling blessed, or content

Since the sentence is about hearing good news, 기뻐요 fits very well because it expresses an immediate emotional reaction.

Compare:

• 좋은 소식을 들어서 정말 기뻐요.
  = I’m really glad because I heard good news.
• 요즘 정말 행복해요.
  = I’m really happy these days.

It is in the 해요체 polite style, which is polite and very common in everyday Korean.

The ending -요 in 기뻐요 makes it polite but not overly formal.

You could change the politeness level like this:

• 친구한테서 좋은 소식을 들어서 정말 기뻐요.
  polite, everyday
• 친구한테서 좋은 소식을 들어서 정말 기뻐.
  casual, to close friends or younger people
• 친구에게서 좋은 소식을 들어서 정말 기쁩니다.
  formal, more polite and stiff

So the original sentence sounds natural for normal polite conversation.

Yes, absolutely.

• 친구한테서 = from a friend, everyday and conversational
• 친구에게서 = from a friend, a bit more formal

Both are correct here.

So these are both fine:

• 친구한테서 좋은 소식을 들어서 정말 기뻐요.
• 친구에게서 좋은 소식을 들어서 정말 기뻐요.

The first one sounds a little more natural in casual spoken Korean.

Yes, -아서/어서 can sometimes suggest simple sequence, like after doing, but in this sentence the strongest meaning is because.

Why? Because the second part is an emotional result:

• 좋은 소식을 들어서 정말 기뻐요.

That naturally sounds like:

• I heard good news, so I’m really happy rather than just
• After hearing good news, I’m really happy

Both ideas are related, but the sentence most naturally expresses cause.

Not exactly.

That English sentence can sound like you are generally pleased about the idea of hearing good news. But the Korean sentence more specifically means that the speaker already heard the good news and is happy because of it.

A closer translation is:

• I’m really happy because I heard good news from a friend.
• I’m really glad to have heard good news from a friend.

So the Korean sentence refers to an actual event that happened.

The structure is:

source + object + verb-reason form + emotion/state

Breaking it down:

• 친구한테서 = from a friend
• 좋은 소식을 = good news + object marker
• 들어서 = because I heard / having heard
• 정말 기뻐요 = I’m really happy

So the overall pattern is:

[I heard X from Y], so [I feel Z].

This is a very common Korean sentence pattern for giving a reason and then describing a feeling or result.