N316/219

ことだ

Verb (dictionary form) + ことだ

Meanings

  • Should
  • Ought to

About this pattern

Explanation

ことだ used after the plain form of a verb to give strong advice or a near-strong recommendation. It expresses what is considered appropriate or expected in a given situation. It’s more assertive than everyday advice, and can sound like a personal rule or a clear expectation. It’s typically used in talking about what one should do in a given circumstance or what is advisable to do, often in a slightly formal or instructional tone.

Learn in context

Example sentences

明日までにレポートを提出することだ。

Make sure to submit the report by tomorrow.

健康のために、毎日運動することだ。

You should exercise every day for your health.

迷ったときは、他の人の意見を参考にすることだ。

When in doubt, refer to other people's opinions.

失敗を恐れず、挑戦することだ。

Do not fear failure; keep challenging yourself.