N37/219

べき

VるべきだVないべきだNであるべきだNであるべきではないVるべきだ/Vないべきだ (formal context)

Meanings

  • Must
  • Should
  • Ought to

About this pattern

Explanation

べき expresses a normative recommendation or obligation. It conveys what someone believes is appropriate or proper in a given situation. It is stronger than a simple suggestion but softer than a direct command. The nuance is often personal or communal expectation rather than a legal requirement. Use it when giving or judging what should be done in a general sense, in advice, or in self-reflection. In formal writing, you may also see べきだ framed with である (Nであるべきだ). For negative expectations, べきではない/べきじゃない expresses what should not be done.

Learn in context

Example sentences

明日までにレポートを提出するべきだ。

You should submit the report by tomorrow.

無断で写真を撮るべきではない。

You should not take photos without permission.

子供には約束を守るべきだ。

Children should keep their promises.

体調が悪い時は休むべきだ。

If you feel unwell, you should rest.

この機会を活かすべきだ。

You ought to make the most of this opportunity.

重要な情報は共有すべきだ。

Important information should be shared.