seonsaengnimi nareul bogo useo jusyeosseoyo.

Here, 보고 is 보다 (to see / to look at) + -고, a connector meaning and.

So:

• 나를 보고 = looking at me / after seeing me
• 웃어 주셨어요 = smiled (for me / kindly)

So the flow is:

• 선생님이 = the teacher
• 나를 보고 = looked at me / saw me
• 웃어 주셨어요 = smiled for me / kindly smiled

This 보고 is not the noun 보고 meaning report.

Because 보다 normally takes a direct object marked by 을/를.

So:

• 나를 보다 = to see me / to look at me

That is why you get:

• 나를 보고 = seeing me / looking at me

If you used 나에게 or 나한테, that would not fit 보다 in the normal way.

A useful way to understand it is:

• 나를 보다 = see/look at me
• 나에게 웃다 = smile at me

But Korean often says 나를 보고 웃다, literally look at me and smile, where English might simply say smile at me.

This is one of the most important parts of the sentence.

웃어 주셨어요 comes from:

• 웃다 = to smile / laugh
• -아/어 주다 = to do something for someone, often with a feeling of kindness, consideration, or benefit
• 주시다 = honorific form of 주다
• -었어요 = past polite

So 웃어 주셨어요 means something like:

• smiled for me
• kindly smiled at me
• was nice enough to smile at me

In natural English, you often would not translate 주다 literally every time. But it adds an important nuance: the speaker feels the teacher’s smile was a kind or favorable action directed toward them.

Without 주다, the sentence would be more neutral.

Good question.

• 웃었어요 = smiled / laughed
• 웃어 주셨어요 = smiled for me / kindly smiled at me

So:

• 선생님이 나를 보고 웃었어요.
  = The teacher looked at me and smiled/laughed.

• 선생님이 나를 보고 웃어 주셨어요.
  = The teacher looked at me and kindly smiled at me / smiled for me.

The second version sounds warmer and more personal. It suggests the smile mattered to the speaker, or was received as a kind gesture.

Because the subject is 선생님 (teacher), and Korean often uses honorific language for respected people.

The form breaks down like this:

• 주다 = give / do for someone
• 주시다 = honorific form
• 주셨어요 = honorific + past + polite

More specifically:

• 주시- = honorific stem
• -었- = past
• combined and contracted into 셨어요

So 주셨어요 shows respect toward the teacher.

Both are possible, but they do slightly different things.

• 이/가 marks the grammatical subject
• 은/는 marks the topic and often adds contrast or a broader context

So:

• 선생님이 나를 보고 웃어 주셨어요.
  = The teacher looked at me and smiled.
  This is a straightforward statement about what happened.

• 선생님은 나를 보고 웃어 주셨어요.
  = As for the teacher, they smiled at me.
  This can sound more topical or slightly contrastive, depending on context.

If you are just describing an event, 이/가 is very natural.

Yes.

You could say:

• 선생님께서 나를 보고 웃어 주셨어요.

Here, 께서 is the honorific subject marker, more respectful than 이/가.

So the difference is roughly:

• 선생님이 = normal and very common
• 선생님께서 = more respectful, more formal

Using 선생님이 is not automatically rude. Korean often shows respect through the verb ending, and this sentence already does that with 주셨어요.

It can mean either, depending on context.

• 웃다 can be to laugh
• It can also be to smile

In this sentence, because of the context and especially because of 웃어 주셨어요, it often feels more like smiled than laughed.

So a natural interpretation is often:

• The teacher looked at me and smiled kindly.

If the situation clearly involved audible laughter, then laughed could also work.

It is literally look at someone and smile, but in natural English it often corresponds to smile at someone.

So:

• 나를 보고 웃다
  literally: look at me and smile
• natural English: smile at me

This is very common in Korean. Korean may describe two linked actions where English would use one simpler verb phrase.

Yes:

• 선생님이 = the teacher + subject marker
• 나를 = me + object marker
• 보고 = seeing / looking at + and
• 웃어 = smile/laugh + connective form
• 주셨어요 = did for me, with honorific and past polite nuance

A very literal structure is:

• The teacher, looking at me, smiled for me.

A more natural English version is:

• The teacher looked at me and smiled kindly.
• The teacher smiled at me.
• The teacher kindly smiled at me.

Both.

There are two different politeness-related things happening:

1. -어요
   This is the polite speech level used toward the listener.

2. -시- inside 주셨어요
   This is the honorific marker used to show respect toward the subject, 선생님.

So the sentence is polite in two directions:

• polite to the listener
• respectful toward the teacher

That is a very common pattern in Korean.

It could, depending on context, but this exact wording usually leans more positive because of 웃어 주셨어요.

Compare:

• 나를 보고 웃었어요
  = looked at me and laughed/smiled
  This could be neutral, positive, or even negative depending on context.

• 나를 보고 웃어 주셨어요
  = kindly smiled at me / smiled for me
  This usually sounds more favorable and considerate.

So if the intended meaning were clearly laughed at me in a negative sense, Korean would often use different wording or give clearer context.