geunyeoga gapjagi dwieseo bulleoseo jogeum nollasseo.

가 is the subject particle. It marks 그녀 as the subject of the clause:

• 그녀가 = she (as the subject)

In this sentence, it tells you that she is the one who did the calling.

Not very often in everyday conversation. 그녀 means she, but it often sounds a bit written, literary, or like a direct translation from English.

In natural spoken Korean, people often:

• omit the pronoun entirely if it is obvious
• use the person’s name or title instead

So in real conversation, you might hear something more like:

• 갑자기 뒤에서 불러서 조금 놀랐어.

The meaning is still clear from context.

갑자기 means suddenly.

It is an adverb, so it describes how the action happened. In Korean, adverbs are often flexible in placement, but they usually appear before the verb or before the part they modify.

Here:

• 그녀가 갑자기 뒤에서 불러서...
• 그녀가 뒤에서 갑자기 불러서...

Both are possible, though the nuance can shift slightly depending on what you want to emphasize.

Good question. The difference is about location versus location of an action.

• 뒤에 = at/in back, behind
• 뒤에서 = from behind / behind, as the place where the action happens

Because 부르다 is an action happening from that location, 에서 is used.

So:

• 뒤에 = behind
• 뒤에서 불렀다 = called from behind

In this sentence, 뒤에서 sounds natural because the calling came from behind the speaker.

불러서 comes from the verb 부르다, which can mean to call, to sing, or to name, depending on context.

Here it means to call out to someone.

The form changes like this:

• dictionary form: 부르다
• stem used in this pattern: 불러
• connective ending: -서
• together: 불러서

So 불러서 means something like:

• calling (me), so...
• because she called (me)...

This is an irregular-looking but common conjugation pattern.

부르다 is a 르 irregular verb.

The rough process is:

• 부르다
• the 르 changes in conjugation
• it becomes 불러
• then add -서
• 불러서

You do not need to calculate it from scratch every time, but it is useful to recognize:

• 부르다 → 불러
• 모르다 → 몰라
• 다르다 → 달라

So 불러서 is the natural connected form of 부르다.

Here, -아서/어서 links two actions and gives a cause/reason relationship.

So 불러서 조금 놀랐어 means:

• She called me, so I was a little startled
• Because she called from behind, I was a little startled

In this sentence, -서 is not just and then. It strongly suggests that the first action caused the second feeling.

The object is omitted, and it is understood from context.

In English, you would usually say she called me from behind, but Korean often leaves out objects if they are obvious.

So the full idea is:

• 그녀가 (나를) 갑자기 뒤에서 불러서 조금 놀랐어.

Here, 나를 = me is omitted because it is easy to infer.

This kind of omission is extremely common in Korean.

Yes, 조금 literally means a little, but in sentences like this it can also soften the statement.

So 조금 놀랐어 can mean:

• I was a little surprised
• I got a bit startled

Sometimes speakers use 조금 not to measure very precisely, but to make the sentence sound less dramatic or more natural.

놀라다 is the dictionary form, meaning to be surprised or to be startled.

놀랐어 is the past tense informal form:

• 놀라다 = to be surprised
• 놀랐어 = was surprised / got startled

So the sentence is talking about a completed reaction in the past.

놀랐어 is the casual/informal speech style.

Compare:

• 놀랐어 = casual
• 놀랐어요 = polite

So this sentence sounds like something you would say to:

• a friend
• someone younger
• someone you are close to

If you wanted to make it polite, you could say:

• 그녀가 갑자기 뒤에서 불러서 조금 놀랐어요.

It is closer to She called me from behind, so I was startled, because -서 often expresses cause.

But in natural English, depending on context, you could also translate it as:

• When she suddenly called me from behind, I was a little startled.

So the Korean is mainly emphasizing that the calling from behind caused the surprise.

Yes, to some extent. Korean word order is flexible as long as the particles and relationships stay clear.

For example, these are possible:

• 그녀가 갑자기 뒤에서 불러서 조금 놀랐어.
• 그녀가 뒤에서 갑자기 불러서 조금 놀랐어.
• 갑자기 그녀가 뒤에서 불러서 조금 놀랐어.

The basic meaning stays similar, but the emphasis changes slightly.

The original version sounds natural and straightforward.