bame deowoseo seonpunggireul teureo nohgo jasseoyo.

It was hot at night, so I slept with the fan on.

Breakdown of bame deowoseo seonpunggireul teureo nohgo jasseoyo.

• ~를: object particle
• 덥다: hot
• ~에: time particle
• 밤: night

Questions & Answers about bame deowoseo seonpunggireul teureo nohgo jasseoyo.

What does 밤에 mean, and why is 에 used?

밤에 means at night or during the night.

The particle 에 is often used with time expressions to mean at / in / on.
So:

• 밤 = night
• 밤에 = at night

In this sentence, it sets the time background: at night, it was hot...

Why is it 더워서 and not 덥어서?

This comes from the adjective 덥다 meaning to be hot.

덥다 is a ㅂ-irregular adjective, so when it is followed by a vowel-starting ending like -어서, the ㅂ changes to 우:

• 덥다
  • -어서
• → 더워서

So 더워서 means because it was hot or since it was hot.

What does -아서 / -어서 mean in 더워서?

Here, -아서 / -어서 gives a reason or cause, similar to:

• because
• so
• since

So 더워서 means:

• because it was hot
• it was hot, so...

In this sentence, it connects the reason to the action that follows:

• 밤에 더워서 = Because it was hot at night...