nun oneun nareneun saramdeuri hoengdanbodo-eseo jaju mikkeureojyeo.

Literally, 눈 오는 날 means a day when snow comes.

In Korean, 오다 normally means to come, but it is also the verb commonly used for weather phenomena like rain and snow:

• 비가 오다 = it rains / rain comes
• 눈이 오다 = it snows / snow comes

So:

• 눈 오는 날 = a snowy day / a day when it snows

Here, 오는 is the modifier form of 오다, and it describes 날 (day).

So the structure is:

• 눈 오다 → snow falls
• 눈 오는 → snow-falling / when it snows
• 눈 오는 날 → a day when it snows

The extra 는 adds a topic/contrast feeling.

Compare:

• 눈 오는 날에 = on a snowy day
• 눈 오는 날에는 = as for snowy days / on snowy days (especially)

In this sentence, 날에는 sets up the situation as the topic:

• On snowy days, people often slip at crosswalks.

The 는 can also imply a mild contrast, like:

• On snowy days, this tends to happen.

So 에 gives the time setting, and 는 makes that time setting the topic of the sentence.

Yes, absolutely.

Both are natural:

• 눈 오는 날에는
• 눈이 오는 날에는

The version without 이 is very common in Korean, especially in modifier phrases. Korean often drops particles when the meaning is still clear.

Very roughly:

• 눈 오는 날 = slightly more compact, very natural
• 눈이 오는 날 = a bit more explicit

Both mean the same thing here.

사람들이 uses the subject marker 이/가, which presents people as the subject of the action:

• 사람들이 ... 미끄러져 = people slip...

If you said 사람들은, it would sound more like:

• As for people, they often slip... or it could suggest contrast:
• People slip, maybe unlike cars or bicycles.

In this sentence, 사람들이 sounds more neutral and natural for stating a general fact.

So:

• 사람들이 = straightforward subject marking
• 사람들은 = topic/contrast emphasis

에서 marks the place where an action happens.

Since 미끄러지다 (to slip) is an action/event, 에서 is the normal choice:

• 횡단보도에서 미끄러지다 = to slip at/on the crosswalk

Compare:

• 에 is often used for existence, destination, or position
• 에서 is used for where an action takes place

Examples:

• 학교에 가요 = I go to school
• 학교에 있어요 = I am at school
• 학교에서 공부해요 = I study at school

So here, because slipping happens there, 횡단보도에서 is correct.

자주 means often.

It is an adverb, so it usually goes before the verb:

• 자주 미끄러져 = often slip

Korean adverbs are fairly flexible, but putting 자주 before the verb is the most common and natural placement.

So the core part is:

• 사람들이 횡단보도에서 자주 미끄러져
• People often slip at crosswalks

미끄러져 is the casual/plain spoken style.

The verb is 미끄러지다 (to slip). In casual present speech, it becomes:

• 미끄러져

More polite versions would be:

• 미끄러져요 = polite everyday speech
• 미끄러집니다 = formal speech

So the sentence you have sounds like casual spoken Korean or informal written style.

The same sentence in polite form would be:

• 눈 오는 날에는 사람들이 횡단보도에서 자주 미끄러져요.

This comes from Korean verb conjugation.

Dictionary form:

• 미끄러지다

When you make the informal present form, -지다 verbs typically become -져:

• 미끄러지다 → 미끄러져

Similar patterns:

• 던지다 → 던져
• 늦어지다 → 늦어져

So 미끄러져 is just the casual present-tense form of 미끄러지다.

It is a general/habitual statement.

Even though the verb looks like present tense, Korean present tense is often used for:

• general truths
• repeated actions
• habits
• things that commonly happen

So this sentence means something like:

• On snowy days, people often slip at crosswalks.

It does not usually mean one specific slipping event happening right now.

Both 날 and 때 can relate to time, but they are not always interchangeable.

• 날 = day
• 때 = time / when

Here, 눈 오는 날 means a day when it snows, which is a very natural fixed expression in Korean.

You could also say something with 때, such as:

• 눈이 올 때는 = when it snows

But the nuance is slightly different:

• 눈 오는 날에는 = on snowy days
• 눈이 올 때는 = when it snows

The original sentence focuses on the kind of day; 때 focuses more on the time/occasion.

Korean nouns usually do not have to show singular vs. plural the way English does.

So 횡단보도에서 can mean:

• at the crosswalk
• at crosswalks
• on crosswalks

depending on context.

In this sentence, because it is a general statement, English usually translates it more naturally as:

• at crosswalks or
• at the crosswalk

Both can work, but plural often sounds more natural in English for a general fact.

Yes, it sounds natural.

It is a very normal Korean sentence structure:

• time/topic: 눈 오는 날에는
• subject: 사람들이
• place: 횡단보도에서
• adverb: 자주
• verb: 미끄러져

This order is typical and easy to understand.

A polite version would be:

• 눈 오는 날에는 사람들이 횡단보도에서 자주 미끄러져요.

A slightly more formal written version could be:

• 눈 오는 날에는 사람들이 횡단보도에서 자주 미끄러집니다.

All of these are natural, with different speech levels.