mauseuga chaeksang araero tteoreojyeoseo orae chajasseo.

The mouse fell under the desk, so I looked for it for a long time.

Breakdown of mauseuga chaeksang araero tteoreojyeoseo orae chajasseo.

• ~가: subject particle
• 책상: desk
• 떨어지다: to fall
• 찾다: to look for

Questions & Answers about mauseuga chaeksang araero tteoreojyeoseo orae chajasseo.

Does 마우스 here mean an animal mouse or a computer mouse?

In most everyday Korean, 마우스 usually means a computer mouse. If someone means the animal, they more often say 쥐.

So in this sentence, the most natural interpretation is a computer mouse falling under the desk.

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Why is 가 used after 마우스?

가 is the subject marker. It marks 마우스 as the thing that fell.

So:

• 마우스가 떨어졌어 = The mouse fell

If you used 마우스는, it would sound more like you are setting up the mouse as the topic, possibly with a contrastive nuance:

• 마우스는 책상 아래로 떨어져서... = As for the mouse, it fell under the desk...

In this sentence, 가 is the most neutral and natural choice.

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What does 책상 아래로 mean, and why is 로 used?