I'm studying Japanese with みんなの日本語. In one page there are this two examples:

  • にちようびは なにを しましたか.

  • どようび なにを しましたか.

Why one of them have the particle は and the other hasn't? It's a mistake or something?

Thank you.


1 Answer 1


It isn't a mistake. It is omitted は. We often omit a postpositional particle.

For example, 昨日(は),学校に行った, 明日どこ(へ)行く?, 何(を)食べようか?, etc.

  • Oh, I didn't know that the particles could be omitted. Thanks
    – STK Oscar
    May 5, 2016 at 7:48
  • 1
    @STKOscar (To all, please correct me if I'm inaccurate) Would like to add that sometimes, omitting the particle は can change the meaning. If your friend was already talking to you or asking you about yesterday, it would make sense for you to use は: 「きのうは なにを しましたか。」 「きのうは、がっこうにいった、...」 If you were speaking without きのう already being an established topic, you could say 「きのう がっこうにいった、...」
    – rhyaeris
    May 5, 2016 at 12:03

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