eoje yageunhaeseo oneureun jeongmal pigonhae.

topic particle

Breakdown of eoje yageunhaeseo oneureun jeongmal pigonhae.

• 어제: yesterday
• 오늘: today
• 정말: really

Questions & Answers about eoje yageunhaeseo oneureun jeongmal pigonhae.

What does 야근해서 mean here?

야근하다 means to work overtime.

So:

• 야근 = overtime, working late
• 야근하다 = to do overtime work / work overtime
• 야근해서 = because (someone) worked overtime / having worked overtime

In this sentence, -해서 connects the first clause to the second and gives a reason/cause:

• 어제 야근해서 = because I worked overtime yesterday
• 오늘은 정말 피곤해 = today I’m really tired

So 야근해서 is functioning like because I worked overtime.

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Why is it 해서 and not something else like 하니까 or 하니?

-아서/어서/해서 is a very common way to link two clauses when the first one is the reason for the second.

Here it sounds natural and conversational:

• 어제 야근해서 오늘은 정말 피곤해. = I worked overtime yesterday, so I’m really tired today.

Compared with other forms:

• -해서: neutral, very common, natural in everyday speech
• -니까: often feels a bit more explicit or assertive, like since/because
• -니: more written, formal, or old-fashioned in many situations

So 해서 is probably the most natural everyday choice here.

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