najeneun botong bappayo.

낮 = daytime (as opposed to 밤 night).
낮에는 is 낮 + -에 + -는:

• -에 marks a time point/when something happens (in/at/on a time period): 낮에 = in the daytime.
• -는 is the topic marker attached to that time phrase: 낮에는 = as for the daytime / during the day (contrastively).

So 낮에는 often implies a contrast like “In the daytime (unlike at night / on weekends / etc.) …”.

• 낮에 = a neutral time phrase: in the daytime.
• 낮에는 = in the daytime, (as for daytime) with a topic/contrast nuance.

Examples of the implied contrast with 낮에는:

• 낮에는 바쁘고 밤에는 한가해요. = I’m busy during the day, and free at night.

If you’re just stating a simple fact with no contrast, 낮에 can sound slightly more neutral.

It’s spaced as:

• 낮에는 (no space)

Korean particles attach directly to the noun/time word. So you write 낮에는, not 낮 에는.

보통 means usually / generally / normally.
It’s an adverb, so it naturally comes before the descriptive word (바빠요).

Common placements:

• 낮에는 보통 바빠요. (most natural)
• 보통 낮에는 바빠요. (also possible; emphasizes usually a bit earlier)

Yes. 보통 can be:

• Adverb: usually / generally → 보통 바빠요 = I’m usually busy.
• Noun/adjective sense: ordinary / average / normal → 보통 사람 = an ordinary person, 보통이다 = to be average/normal.

In your sentence, 보통 is clearly an adverb because it modifies 바빠요.

The dictionary form is 바쁘다 (to be busy). This adjective has the ㅡ irregular pattern:

1. Drop ㅡ → 바쁘- → 바ㅃ-
2. Add -아요/어요 based on the previous vowel. Since the remaining vowel is ㅏ, it becomes -아요.
3. Result: 바빠요.

So 바쁘다 → 바빠요 is the standard polite present form.

바쁘다 is a descriptive verb (often called an “adjective” in English explanations).
In Korean, adjectives conjugate like verbs, so they can end in -아요/어요 just like action verbs.

That’s why 바빠요 looks “verb-like” even though the meaning is a state (busy).

Korean often omits the subject when it’s clear from context.
So 낮에는 보통 바빠요 can mean:

• I’m usually busy during the day.
• We’re usually busy during the day.
• They’re usually busy during the day.
• It’s usually busy during the day (e.g., a shop/office)

If you want to specify:

• 저는 낮에는 보통 바빠요. = As for me, I’m usually busy during the day.
• 우리 가게는 낮에는 보통 바빠요. = Our shop is usually busy during the day.

바빠요 is 해요체 (polite, common in everyday conversation).

Other levels:

• Formal polite (합니다체): 낮에는 보통 바쁩니다.
• Casual (반말): 낮에는 보통 바빠.

낮에는 usually means in the daytime / during daytime hours (contrasting with night), not necessarily “all day long.”

If you want “throughout the day / all day (daytime)” you might use:

• 낮 동안(에는) 보통 바빠요. = I’m usually busy during the daytime (for that whole stretch).
• 하루 종일 바빠요. = I’m busy all day (the whole day).

A few pronunciation notes:

• 낮에는 is commonly pronounced close to 나지에는 (because 낮 + 이 sound interaction makes the ㅈ sound appear).
• 바빠요 has a tense consonant ㅃ: say it with a tighter pp sound.

A natural rhythm groups it like:

• 낮에는 / 보통 / 바빠요