Usage and Meaning
The word "用于" is a formal prepositional phrase meaning "used for" or "intended for" a specific purpose. It often appears in written or formal spoken Chinese to indicate the function or application of an object, tool, medicine, or statement.
Common Contexts
- Describing the purpose of machines, tools, or devices (e.g., "机器用于工业生产").
- Indicating the application of medicines or treatments (e.g., "药用于治疗疾病").
- Explaining the role of words, data, or actions in a context (e.g., "话用于说明问题").
Collocations and Patterns
- "用于 + 名词" (used for + noun): Specifies the purpose or target.
- Often paired with verbs like "是" or "被" in passive constructions.
Register and Tone
"用于" is more formal and common in written language, official documents, scientific texts, and formal speech. In casual conversation, people might use "用来" or "拿来" instead.
Common Confusion
Do not confuse "用于" with "用" alone. "用" can mean "to use" generally, while "用于" specifically emphasizes the purpose or application. For example, "用手机" means "use a phone," but "用于手机" would mean "used for phones" or "intended for phones."