Learn Hardcore Korean: jumaredo ireul haeyo.

에도 is a combination of two particles: 에 (marks time or place, “on/at/in”) + 도 (“also” or “even”). Together, 에도 can be translated as “even on” or “also on.” So in 주말에도, you’re saying “even on weekends” or “also on weekends.”

Why must it be 주말에도 and not just 주말도?

Time expressions like 주말 need the time-marker 에 to mean “on weekends” → 주말에. If you want to add 도 (“also/even”), it attaches after 에, giving 주말에도.

주말도 (without 에) would treat “weekend” as a topic or contrast, not as the time of an action, and can sound unnatural here.

How is 주말에도 different from 주말만?

주말에도 = even on weekends / also on weekends. It implies you do something at times beyond what’s expected (e.g. weekdays + weekends).
주말만 = only on weekends. It limits the action exclusively to weekends.

Why do we say 일을 해요? What role does 을 play?

일 = “work” (noun)
하다 = “to do” (verb)
To say “to do work,” you mark 일 as the object with 을, forming 일을 하다. In polite speech you use 해요, so 일을 해요 literally means “do work,” i.e. “work.”

Can you drop 을 and just say 일해요?

Yes. In casual or everyday speech, Koreans often omit the object particle when meaning is clear.

일을 해요 = more explicit, fully grammatical.
일해요 = common in conversation.
Both are understood as “(I) work.”

There’s no subject in 주말에도 일을 해요. Who is the doer?

Korean frequently omits the subject when it’s obvious from context.
This sentence could mean:
• 저는 주말에도 일을 해요 → “I work even on weekends.”
• 그는 주말에도 일을 해요 → “He works even on weekends.”
Add 저는, 그는, etc., if you need to specify the subject.

How can I change 해요 to different speech levels or tenses?

Here are a few common variants:
• Casual present: 주말에도 일을 해
• Formal polite present: 주말에도 일을 합니다
• Polite past: 주말에도 일을 했어요
• Polite future: 주말에도 일을 할 거예요