在于

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Character Breakdown

Meaning and Usage

"在于" is a formal expression used to indicate the fundamental cause, core, or essence of something. It often appears in written or formal spoken Chinese to highlight what something depends on or where its key lies.

Common Contexts

It is frequently used in sentences discussing reasons, causes, or essential factors, such as "成功在于努力" (Success lies in effort).

Collocations and Patterns

  • 在于 + noun/verb phrase: to indicate what something depends on or where it lies.
  • Often used in abstract or conceptual contexts rather than concrete physical locations.

Nuance and Register

"在于" carries a somewhat formal tone and is common in essays, speeches, and analytical discussions. It is less common in casual conversation, where simpler phrases like "取决" (depends on) might be used.

Common Confusion

Do not confuse "在于" with the preposition "" alone, which indicates location. "在于" is a fixed phrase meaning "to lie in" or "to depend on" the essence or cause of something.

Example Sentences

Success lies in persistent effort.

The feeling of happiness lies in inner satisfaction, not external material

The key to the problem lies in poor communication.