How to Say “You Have to Do Something” in Japanese

何かしなければならない
nanika shinakereba naranai
The English phrase "you have to do something" is translated into Japanese as 何かしなければならない (nanika shinakereba naranai).
This phrase is used to express an objective necessity or a sense of duty to act in response to a problem. This phrase is used to say that it is necessary to take some action to resolve a situation.

What does it mean word for word?

The phrase is composed of 'nanika' (something), 'shinakereba' (if [one] does not do) and 'naranai' (it will not do/it is not acceptable).

How does it change in a sentence?

In casual speech, the long nakereba naranai structure is often shortened to nakya or nakucha. To make the phrase polite, change the final verb naranai to its polite form narimasen.

How do you pronounce it?

nanika shinakereba naranai

Did you know?

  • When a Japanese person says nanika shinakereba and trails off without finishing the sentence with naranai, it is still understood as 'I have to do something'. Leaving the sentence unfinished is a common way to soften a command or a realization.
  • The word ならない (naranai) comes from the verb 'to become', implying that a certain state of affairs will not occur unless the action is taken.
  • While 何かしなければならない expresses necessity, Japanese speakers often avoid using it directly toward a superior to avoid sounding like they are giving an order.

Examples in context

  • 会議に出席するためには、早く出発しなければなりません。
    To attend the meeting, you have to leave early.
  • テストのためには、もっと勉強しなければいけません。
    In order to pass the test, you have to study more.
  • 授業に遅れないといけません。
    I must not be late for class.
  • その書類は明日までに提出しなければならない。
    You have to submit that document by tomorrow.
  • 宿題をやるなきゃいけないんだ。
    I have to do my homework.

Example conversation

Ren and Himari are discussing a problem at work.

  1. 蓮 Ren

    問題が深刻になってきたね。
    mondai ga shinkoku ni natte kita ne.
    The problem has become serious, hasn't it?
  2. 陽葵 Himari

    ええ、本当に困った状況です。
    ē, hontō ni komatta jōkyō desu.
    Yes, it's a really difficult situation.
  3. 蓮 Ren

    すぐに何かしなければならないと思う。
    sugu ni nanika shinakereba naranai to omou.
    I think we have to do something immediately.
  4. 陽葵 Himari

    そうですね。蓮さんと相談しましょう。
    sō desu ne. Ren-san to sōdan shimashō.
    You're right. Let's discuss it with you, Ren.
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Andrea Ellen
Andrea EllenHelp make this guide better. Spot a mistake, know another way to say it, or have an example from real life? Share it below.
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