100508
Context:

> プロジェクトチームでの懇親会は初めてだったので、メンバーのいろんな面を知れて楽しかったです。

Why is there "で" in "プロジェクトチームでの懇親会"?

What's the difference between these phrases?

  * プロジェクトチームの懇親会は初めてだった。
  * プロジェクトチームで懇親会は初めてだった。
  * プロジェクトチームでの懇親会は初めてだった。
CC BY-SA 4.0
2023-08-01T06:21:57.297
100469
2023-08-02T17:03:55.563
54510
question
particle-の particle-で
What's the difference between "プロジェクトチームでの懇親会", "プロジェクトチームで懇親会" and "プロジェクトチームの懇親会"?
If you said one of these sentence, many Japanese can understand meaning
without misunderstanding.

If I had to say...

If it's followed by the word "は初めてだった", I feels strange under Pattern 2.

Because provably these are interpreted as 「は初めてだった」.
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2023-08-01T19:36:54.363
100483
2023-08-01T19:36:54.363
54588
100469
answer
> **A** プロジェクトチームの懇親会は初めてだった。

This can mean the project team held a 懇親会 for the first time, but it can also
mean that it was only the speaker who _experienced_ the 懇親会 for the first
time. It is unclear whether the speaker participated in the 懇親会 or merely
observed it, and it is also unclear whether or not the speaker is a member of
the project team.

> **B** プロジェクトチームで懇親会は初めてだった。

This sounds awkward. To use で I would rephrase it like:

> **B1** プロジェクトチームで懇親会を開いたのは初めてだった。

Like **A** , it was either the project team's or the speaker's first time. It
is also unclear whether "they" (excluding the speaker) or "we" (including the
speaker) held the 懇親会, but in the case of "we", it implies the speaker is a
member of the project team, unlike **A**. Xで denotes the mode of
conduct/existence that is X, and can be seen in **Xで** ある. They/We, being the
project team, held a 懇親会 for the first time.

Or I would rephrase **B** into:

> **B2** プロジェクトチームで懇親会に参加したのは初めてだった。

In this case the 懇親会 was arranged not by the project team but by another, and
it is implied that there were participants other than the project team.
Arguments similar to those on **B1** also apply to this. However, it may be
that the speaker had participated _the_ 懇親会 before by themself in this case.

> **C** プロジェクトチームでの懇親会は初めてだった。

**C** means either **B1** or **B2** , or something along the same line.
CC BY-SA 4.0
2023-08-02T16:11:36.780
100508
2023-08-02T17:03:55.563
2023-08-02T17:03:55.563
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100469
answer