In Tae Kim's guide, he wrote a few example sentences:

  1. 徹夜して、宿題することある。
  2. 一人で行くことありません。
  3. パリに行ったことありますか。
  4. お寿司を食べたことある。
  5. そういうのを見たことなかった。

In these examples, I don't really understand why some sentences use が and some use は.

1 Answer 1


All of these sentences on their own would permit either が or は. It is context that could force one or the other. This question is worth reading if you're interested how context comes into play.

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