kaigi no mae ni, uketsuke de namae o kakimasu.

Before the meeting, I write my name at the reception desk.

Breakdown of kaigi no mae ni, uketsuke de namae o kakimasu.

• を: direct object particle
• の: possessive case particle
• で: location particle
• に: time particle

Questions & Answers about kaigi no mae ni, uketsuke de namae o kakimasu.

Why is の used in 会議の前?

の links 会議 and 前 and makes 前 specify in front of / before what.

• 会議 = meeting
• 前 = before / in front

So:

• 会議の前 = before the meeting

You can think of this pattern as:

• A の 前 = before A
• A の 後 = after A

Examples:

• 授業の前 = before class
• 昼ご飯の後 = after lunch

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Why is there に after 前 in 会議の前に?

The に marks the time point before which or at which something happens.

So:

• 会議の前に、名前を書きます。
  = I write my name before the meeting.

With time expressions like this, に often appears after words such as:

• 前に = before
• 後に = after

It helps show that the action happens at that time relation.

A useful comparison:

• 会議の前 can sometimes just be a noun phrase: before the meeting
• 会議の前に more clearly marks when the action happens: before the meeting, ...

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Why is で used in 受付で?