文法 · JLPT N3 grammar

〜ことだ

koto da · you should ~ (advice)

〜ことだ gives direct advice from someone with experience: 上手になりたければ、毎日練習することだ, if you want to improve, practise every day.

How to form it

V-dictionary + ことだ休むことだ
V-ない + ことだ無理をしないことだ

How it is used

It is said to equals or juniors. To a superior it sounds presumptuous.

〜ものだ gives general common sense; 〜ことだ gives advice for this person's situation.

Examples

Tap a kanji for its reading.

  • 日本語が上手になりたければ、毎日話すことだ。If you want to get good at Japanese, speak it every day.
  • 風邪のときは、ゆっくり休むことです。When you have a cold, the thing to do is rest.
  • 合格したいなら、無理をしないことだ。If you want to pass, don't overdo it.
  • 分からないときは、すぐ聞くことです。When you don't understand, ask right away.

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