除非
How to Understand
除非 is a conjunction that means 'unless' or 'except if.' It introduces a condition that must be met for something else to happen. It is often used in negative contexts, emphasizing that an action will not occur unless the specified condition is fulfilled.
The character 除 (chú) originally meant 'to remove' or 'except,' and 非 (fēi) means 'not.' Together, they form a phrase that literally translates to 'except not,' which conveys the idea of a conditional exception.
除非 is commonly used in daily conversations and formal writing. It often appears in sentences with a structure like “除非...，否则...” (Unless..., otherwise...). Understanding its use helps learners grasp how Chinese expresses conditions and exceptions, which is essential for mastering the language's logical structure.