pyeongireneun doseogwaneseo gongbuhago jumareneun jibeseo swieoyo.

평일 means weekday(s) or weekdays.

The particle -에는 is 에 + 는:

• 에 can mark a time, like on weekdays
• 는 adds topic/contrast

So 평일에는 has the feeling of:

• as for weekdays
• on weekdays, ...

In this sentence, it contrasts weekdays with weekends:

• 평일에는 ...
• 주말에는 ...

A natural way to think of it is: On weekdays, I study at the library, and on weekends, I rest at home.

Because the speaker is contrasting two time periods:

• 평일에는 = on weekdays
• 주말에는 = on weekends

The 는 part gives a contrastive feeling, something like:

• as for weekdays...
• as for weekends...

If you used only 평일에 and 주말에, the sentence would still be grammatical, but it would sound a little less clearly contrastive.

에서 is used to mark the place where an action happens.

Here:

• 도서관에서 공부하고 = study at the library
• 집에서 쉬어요 = rest at home

This is different from 에, which often marks:

• destination: 학교에 가요 = go to school
• location/existence with some verbs: 집에 있어요 = be at home
• time: 아침에 = in the morning

Since 공부하다 and 쉬다 are actions happening in a place, 에서 is the correct particle.

Because 쉬다 here means to rest, which is an action taking place somewhere, so Korean normally uses 에서.

• 집에서 쉬어요 = I rest at home

Using 집에 with 쉬다 is not the standard choice for this meaning. A learner should usually remember:

• action in a place → 에서
• going to a place → 에

So:

• 집에 가요 = go home
• 집에서 쉬어요 = rest at home

Because the sentence is linking two actions together.

The ending -고 means and or and then, so:

• 공부하고 = study and
• 쉬어요 = rest

Only the final verb usually carries the full sentence ending for politeness and tense.

So Korean often does this:

• verb stem + -고, then final verb

Here:

• 공부하고 쉬어요 = study and rest

If you said 공부해요 주말에는 집에서 쉬어요, it would sound broken into separate sentences instead of smoothly connected.

In this sentence, -고 connects two clauses and is best understood as and.

So:

• 도서관에서 공부하고 주말에는 집에서 쉬어요 means
• I study at the library, and on weekends I rest at home

It does not necessarily mean one action happens immediately after the other. Here it simply connects two habits.

Common uses of -고:

• 먹고 자요 = eat and sleep
• 친구를 만나고 공부해요 = meet a friend and study

In your sentence, it connects two contrasting routine actions.

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

So even though the English translation may say I study... and I rest..., Korean does not need to say 저는 unless the speaker wants emphasis or contrast.

The sentence naturally implies the subject from context:

• (저는) 평일에는 도서관에서 공부하고 주말에는 집에서 쉬어요.

This omission is very normal in Korean.

평일 can mean a weekday or weekdays, depending on context. In this sentence, it clearly means weekdays in general.

Korean usually does not mark plural the way English does. Context does a lot of the work.

So:

• 평일에는 = on weekdays
• 주말에는 = on weekends / on the weekend, depending on context

This is very common in Korean. Nouns often stay the same whether English would use singular or plural.

쉬어요 uses the polite informal style, often called 해요-style. This is one of the most common endings in everyday Korean.

So the sentence sounds:

• polite
• natural
• conversational

If you wanted a more formal style, you could say:

• 평일에는 도서관에서 공부하고 주말에는 집에서 쉽니다.

If you wanted a casual style with close friends, you could say:

• 평일에는 도서관에서 공부하고 주말에는 집에서 쉬어.

공부하다 is a 하다 verb.

To connect it with -고, you attach -고 to the verb stem:

• 공부하다 → stem 공부하-
• 공부하 + 고 → 공부하고

So:

• 공부하고 = study and

This same pattern happens with other 하다 verbs:

• 운동하다 → 운동하고
• 일하다 → 일하고

The dictionary form is 쉬다 = to rest.

To make it polite in -어요 style:

• remove 다 → 쉬
• add -어요 → 쉬어요

So:

• 쉬다 → 쉬어요

This is a regular conjugation. The pronunciation is roughly like swi-eo-yo, though in natural speech it flows smoothly.

Yes, sometimes it can.

For example:

• 평일에 도서관에서 공부하고 주말에 집에서 쉬어요.

This is still correct and natural.

But 에는 adds a clearer contrast between the two time expressions:

• on weekdays...
• on weekends...

So in this sentence, 에는 helps emphasize the difference between the weekday routine and the weekend routine.

It is one sentence made of two connected parts.

Structure:

• 평일에는 도서관에서 공부하고
• 주말에는 집에서 쉬어요

The first part ends with -고, which shows it continues into the second part. The final verb 쉬어요 finishes the sentence.

So it works like:

• On weekdays, I study at the library, and on weekends, I rest at home.

Yes.

You could say:

• 저는 평일에는 도서관에서 공부하고 주말에는 집에서 쉬어요.

This would explicitly mean As for me, on weekdays...

However, Korean often drops 저는 when the subject is already understood, so the original sentence sounds completely natural.

Adding 저는 may be useful if:

• you are introducing your own routine
• you want to contrast yourself with someone else
• the context is not clear yet