geunyeoneun angyeongeul saero sassneunde jal an majaseo jogeum silmanghaesseo.

을 is the object particle, marking 안경 as the thing she bought.

So:

• 안경을 샀어 = she bought glasses

Because 안경 ends in a consonant, it takes 을. If a noun ends in a vowel, it takes 를 instead.

In Korean, 안경 usually means glasses / a pair of glasses as a single item. Even though English uses a plural-looking word, Korean treats 안경 as a normal noun.

So in this sentence, 안경을 샀어 most naturally means she bought a pair of glasses.

새로 means newly, afresh, or as something new.

In 안경을 새로 샀는데, it means she bought glasses newly / bought a new pair of glasses.

It focuses on the action of getting something new, rather than directly describing the noun.

Compare:

• 새 안경을 샀어 = she bought new glasses
• 안경을 새로 샀어 = she bought glasses anew / bought a new pair

Both can be very similar in meaning, but 새로 emphasizes the act of buying something new.

-는데 links one clause to the next. It often gives one of these feelings:

• background information
• contrast
• setting up what comes next
• sometimes a mild but

Here, 샀는데 is something like:

• she bought new glasses, but...
• she bought new glasses, and then...

In this sentence, it helps introduce the unexpected follow-up: she bought them, but they did not fit well.

Because the buying already happened.

• 사다 = to buy
• 샀어 = bought
• 샀는데 = bought, and/but...

Korean often keeps the tense of each clause clear, so 샀는데 tells you that the purchase happened before the next situation.

They do different jobs.

• 샀는데: introduces the situation and adds a contrast/background feeling
• 안 맞아서: gives the reason for the disappointment

So the flow is:

1. She bought new glasses
2. but / and then
3. they did not fit well
4. so she was a little disappointed

A natural English breakdown would be:

• She bought new glasses, but they didn’t fit well, so she was a little disappointed.

맞다 has several meanings in Korean. Here it does not mean to be correct. In this sentence, it means:

• to fit
• to suit
• to be right for

So 안경이 잘 맞다 can mean:

• the glasses fit well
• the glasses suit her well
• the prescription feels right

This is a very common Korean verb with multiple meanings, so context matters a lot.

잘 안 맞아서 means because it/they didn’t fit well or because it/they didn’t suit her well.

Breakdown:

• 잘 = well / properly
• 안 = not
• 맞다 = fit / suit / be right
• -아서 = because / so

So literally it is something like:

• because they did not fit properly

With glasses, this could refer to:

• the physical fit on her face
• the prescription not feeling right
• the style not suiting her well

The exact nuance depends on context.

Both are grammatically possible.

• 안 맞아서 = not fit, so...
• 맞지 않아서 = because it does not fit

But 안 + verb is usually the more common and conversational way to make a verb negative.

So 잘 안 맞아서 sounds very natural in everyday speech.

잘 often means well, but with negative expressions it often means properly or as expected.

So:

• 안 맞아서 = because it doesn’t fit
• 잘 안 맞아서 = because it doesn’t fit well / doesn’t fit properly

Adding 잘 makes the meaning more natural and specific. It suggests the fit is not quite right rather than absolutely impossible.

조금 means a little.

So:

• 실망했어 = was disappointed
• 조금 실망했어 = was a little disappointed

It softens the emotion. She is disappointed, but not necessarily extremely upset.

실망했어 comes from 실망하다, which means to be disappointed or to feel disappointed.

Breakdown:

• 실망하다 = to be disappointed
• 실망했어 = was disappointed

This is casual informal speech. It would be used with friends, people younger than you, or in relaxed narration.

A more polite version would be:

• 실망했어요

So the sentence is written in a casual style.

That is a very good question. 그녀 is grammatically correct, but in everyday Korean it is often less natural than English she.

In real conversation, Koreans often prefer:

• using the person’s name
• using a title
• or just omitting the subject if it is clear

So in many real contexts, people might simply say:

• 안경을 새로 샀는데 잘 안 맞아서 조금 실망했어

and let the listener understand who is being talked about.

Still, 그녀는 is not wrong. It is just more common in writing, translation-like Korean, or contexts where the subject needs to be made explicit.

는 marks 그녀 as the topic of the sentence: as for her, this is what happened.

So 그녀는 has a feeling like:

• as for her
• she

If you used 그녀가, it would sound more like you are specifically identifying her as the subject, possibly in contrast with someone else.

In this sentence, 그녀는 is a natural way to set her up as the topic of the whole statement.

Yes. The current sentence is casual:

• 그녀는 안경을 새로 샀는데 잘 안 맞아서 조금 실망했어.

A polite version would be:

• 그녀는 안경을 새로 샀는데 잘 안 맞아서 조금 실망했어요.

The meaning stays the same. The only difference is the speech level.