When does a comma 、replace a particle?


When a particle is omitted in casual speech, the written representation (to my
great surprise) adds a comma. Do these commas actually correspond to any
change or pause in the intonation?

テニス、する？ 今、何、してる？ どんな食べ物、好き？

Also, are these commas required or optional?

**EDIT:**

The source of this information is the
[textbook「上級へのとびら」](https://www.9640.jp/nihongo/en/detail/?447). While there
is no direct statement in the book that the commas act as a replacement for
the omitted particles, in the multiple example sentences as well as in a table
of examples for several levels of speech, the comma 「、」 is in fact used as a
replacement for the omitted particles in every case.

Example dialog:

A: 「あ～、お腹、すいたなあ」

B: 「俺{おれ}も腹へった。この辺にうまいトンカツの店があるんだぜ。食{く}いに行こうか。おごるよ」

A: 「いやよ、トンカツは。カロリーが高いから」

B: 「なんだ、じゃ、俺{おれ}、一人で行こうっと」

A: 「あ、まって！ その店、おいしいんでしょ。やっぱり、私も行くわ！」

B: 「じゃ、今から行くぞ！」

(You can hear the example dialog in [this official audio
transcript](https://tobiraweb.9640.jp/wp-content/uploads/L02-1_yomimono.mp3),
from the minute 3:30)

Table of examples for each level of speech (see the third column くだけた言い方):

[![levels of
speech](https://i.stack.imgur.com/6Ucw0.jpg)](https://i.stack.imgur.com/6Ucw0.jpg)

Unfortunately, there is no audio transcript for the contents of the table
above.




All the commas in your image are not required at all. Rather, they are usually
avoided. The following sentences are just fine:

  * あの人先生？
  * その映画面白い？
  * 何かスポーツする？
  * 今弁護士してる。
  * これ見て。

Forget the idea that a comma "replaces" a particle; it never does. Commas in
Japanese play little semantic role, and they are typically nothing more than
reading aids. They are typically used after conjunctions (e.g., じゃ) and
interjections (e.g., あ～), but even this is not a hard rule. In the pasted
image, commas are used much more often than usual, but that's probably because
the author thought they could help beginner readers to parse those sentences.




All the commas in your image are not required at all. Rather, they are usually
avoided. The following sentences are just fine:

  * あの人先生？
  * その映画面白い？
  * 何かスポーツする？
  * 今弁護士してる。
  * これ見て。

Forget the idea that a comma "replaces" a particle; it never does. Commas in
Japanese play little semantic role, and they are typically nothing more than
reading aids. They are typically used after conjunctions (e.g., じゃ) and
interjections (e.g., あ～), but even this is not a hard rule. In the pasted
image, commas are used much more often than usual, but that's probably because
the author thought they could help beginner readers to parse those sentences.

