Japanese Language Stack Exchange is a question and answer site for students, teachers, and linguists wanting to discuss the finer points of the Japanese language. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

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.

share|improve this question
up vote 2 down vote accepted

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.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.