場合

In Case of

Level 2Sounds Like baai

場合 (ばあい) is a formal way to say 'if' or 'in the case of.' It is commonly found in manuals, signs, and professional settings to explain what should happen in a specific scenario.

How It Works

場合（ばあい） literally means 'situation' or 'case.' When used as a grammar pattern, it acts as a formal conditional marker.

1. Grammatical Connection:
Because 場合 is a noun, you must use the noun-modifying form for whatever comes before it:

  • Verbs: Plain form (Dictionary, ない form, or た form). Use the dictionary form for future/general cases, the ない form for negative conditions, and the た form if the condition must be completed first.
  • Nouns: Noun + の (e.g., 火事（かじ）の場合 - In case of fire).
  • い-Adjectives: Plain form (e.g., 忙（いそが）しい場合 - In case you are busy).
  • な-Adjectives: Adjective + な (e.g., 必要（ひつよう）な場合 - In case it is necessary).

2. Nuance and Usage:
While 時（とき） refers to a general time when something happens, 場合 focuses on a specific possibility or condition. It is the standard choice for business emails, public notices, and instruction manuals.

3. Realistic Possibilities Only:
Unlike the conditional たら, 場合 is restricted to realistic possibilities. It cannot be used for counterfactual or impossible hypothetical situations. For example, you cannot say 'If I were a bird' using 場合 because that is not a realistic 'case' or 'situation' that could occur.

4. Particles with 場合:
場合 is often followed by particles to clarify its role in the sentence:

  • 場合は: Sets the condition as the topic (e.g., 'In the case that...'). This is the most common form.
  • 場合に: Indicates a specific instance or point in time when the condition is met (e.g., 'In the event of...').

Examples (6)

  1. 雨の場合は、イベントは中止になります。

    In the case of rain, the event will be cancelled.

    Word by Word: Rain 's case in, event topic cancellation become.

    A noun (雨) is connected to 場合 using the particle の. This is a classic formal announcement style.

  2. パスワードを忘れた場合は、こちらをクリックしてください。

    In the event that you have forgotten your password, please click here.

    Word by Word: Password (object) forgot case in, here (object) click please.

    The た form (忘れた) is used here because the action of forgetting must happen before you click the link.

  3. 領収書が必要な場合は、係員に申し出てください。

    In case you need a receipt, please inform the staff.

    Word by Word: Receipt (subject) necessary case in, staff to report please.

    A な-adjective (必要) uses な to connect to 場合.

  4. 火事や地震の場合は、エレベーターを使わないでください。

    In the event of fire or earthquake, please do not use the elevator.

    Word by Word: Fire or earthquake 's case at, elevator (object) use-not-please.

    While 時（とき） and 場合 are often interchangeable in emergency signs, 場合 adds a slightly more formal, conditional tone.

  5. 一人で行くのが不安な場合は、友達と来てもいいですよ。

    In the case that you are anxious about going alone, you may come with a friend.

    Word by Word: One person by go nominalizer (subject) anxious case in, friend with come-also-good is.

    This shows 場合 used in a helpful, polite context rather than just an emergency rule.

  6. メールが届かない場合は、迷惑メールフォルダを確認してください。

    In the case that the email does not arrive, please check your spam folder.

    Word by Word: Email (subject) arrive-not case in, spam folder (object) check please.

    The ない form (届かない) is very common with 場合 to describe what to do when a specific condition is not met.

Common Mistakes

  • Using the polite form (~masu) before 場合.

    遅れます場合は、連絡してください。
    遅れる場合は、連絡してください。

    場合 is a noun, so it must be preceded by the plain (dictionary) form, not the polite ます form.

  • Using だ instead of の to link a noun to 場合.

    病気だ場合は、休んでください。
    病気の場合は、休んでください。

    Nouns must use the particle の to modify 場合.

  • Confusing the dictionary form and the past form.

    日本に行く場合は、これを買ってください。
    日本に行った場合は、これを買ってください。

    If you want the person to buy something after they arrive in Japan, you must use the た form (行った). Using the dictionary form (行く) implies they should buy it before or during the process of going.

How It Connects

Tap a pattern to see what it builds on and what it leads to.

場合Level 2In Case of

Learn This First

場合 (baai) literally means 'situation' or 'case' and functions grammatically as a noun. To use it correctly, you must understand how to modify nouns using the particle 'の' for other nouns, the 'な' connector for な-adjectives, and plain forms for verbs and い-adjectives.

Words in This Pattern