The word '除非' (chúfēi) means 'unless' or 'only if', indicating a condition that, if not met, leads to the outcome stated in the main clause.
Word in 30 Seconds
- Unless something happens, the main clause will occur.
- Introduces a condition that must not be met for something else to happen.
- Used to state exceptions or requirements.
Overview
“除非”是汉语中一个非常重要的连词，用于连接两个分句，表达一种必要条件或限制。它表明，只有当“除非”后面的条件不成立时，前面说的主语或情况才会发生。换句话说，“除非”后面的内容是“不发生”前面情况的唯一原因或条件。
“除非 A，（否则/不然）B”。这里的 A 是一个条件，B 是在 A 不满足时发生的结果。 “否则”或“不然”常常可以省略，但加上后语气更清晰。
“A 除非 B”。这种结构中，“除非”后面的 B 是 A 发生的前提条件，强调 B 的重要性，但不如“除非 A，B”句式常见。
“除非”引导的从句通常表示一个否定性的结果，或者说，它限定了主句可能发生的情况。如果“除非”后面的条件成立，那么主句的情况就不会发生。
学习环境：说明学习要求或后果。例如：‘除非你认真复习，否则考试很难及格。’
“只有”和“除非”都表示条件，但侧重点不同。“只有 A，B”强调 A 是 B 发生的唯一条件，B 只有在 A 满足时才发生。而“除非 A，B”强调 B 只有在 A 不满足时才发生，A 是 B 不发生的条件。
这两个词通常与“除非”连用，表示“除非”条件不满足时可能出现的后果，起强调作用，但它们本身不能独立表示“除非”的含义。
“如果……不……”句式与“除非”意思非常接近，可以互换使用。例如，“如果今天不下雨，我们就去公园”和“除非今天下雨，否则我们就去公园”意思基本相同。但“除非”在连接两个分句时更为紧凑。
Examples
除非你请客，否则我才不去。
informalUnless you treat me, I won't go.
除非得到上级的批准，否则不得擅自行动。
formalUnless approved by superiors, unauthorized actions are forbidden.
除非我睡着了，不然我一定会听到门铃响。
everydayUnless I fell asleep, I definitely would have heard the doorbell.
这项技术除非经过严格测试，否则不能投入市场。
academicThis technology cannot be launched unless it undergoes rigorous testing.
Common Collocations
Common Phrases
除非万不得已
unless absolutely necessary
除非另有通知
unless otherwise notified
除非……否则……
unless... otherwise...
Often Confused With
'只有' (zhǐyǒu) means 'only', emphasizing that the condition stated is the sole requirement for the outcome. '除非' (chúfēi) means 'unless', indicating that the outcome will happen if the stated condition is NOT met.
'如果……不……' (rúguǒ... bù...) is a conditional clause meaning 'if... not...'. It is very similar in meaning to '除非' and often interchangeable, but '除非' provides a more concise structure for expressing this type of exception.
Grammar Patterns
How to Use It
Usage Notes
The conjunction '除非' is used to introduce a condition that, if not met, leads to the main clause's outcome. It is often followed by '否则' (fǒuzé) or '不然' (bùrán) to explicitly state the consequence. The tone can range from informal to formal depending on the context.
Common Mistakes
Learners sometimes confuse '除非' with '只有' (only). Remember '除非' implies the condition must NOT happen for the result, while '只有' implies the condition MUST happen for the result.
Tips
Condition and Consequence
Remember 'unless' introduces the condition that must NOT be met for the main outcome to happen.
Avoid Direct Translation
Don't directly translate English 'unless' into Chinese in all contexts. Consider '只有' (only) or '如果...不...' (if not) for different nuances.
Expressing Rules Clearly
Using '除非' helps clearly define rules or boundaries, common in Chinese communication for setting expectations.
Word Origin
The character '除' (chú) means to remove or except, and '非' (fēi) means not or wrong. Together, '除非' literally implies 'except if it is not' or 'removing the case where it is not', hence 'unless'.
Cultural Context
In Chinese culture, clearly stating conditions and expectations is important. '除非' is a useful tool for setting boundaries and defining what is required or what exceptions exist.
Memory Tip
Think of 'unless' as 'chúfēi' – 'chú' sounds like 'choose' and 'fēi' sounds like 'fail'. You choose to do something *unless* something else fails to happen.
Frequently Asked Questions
4 questions“只有”表示“仅仅”，强调前面的条件是后面结果发生的唯一前提。而“除非”表示“不这样的话”，强调后面的条件是前面情况不发生的唯一原因。
不一定。虽然“除非”引导的条件通常是负面的（例如“除非下雨”），但其核心含义是“在不满足这个条件的情况下”。所以，如果条件本身是肯定的，也可以用，但后面常跟“否则/不然”来连接结果。
可以。在很多情况下，“除非 A，B”的结构是完整的，意思清晰。加上“否则”或“不然”可以使句子结构更明确，语气更强调，尤其是在口语中。
可以。例如：“除非你道歉，否则我不会原谅你。” 这种情况，“除非”引导的条件从句放在句首，主句跟在后面。
Test Yourself
我们明天去公园，______下大雨。
“除非”表示一种限制条件，即‘如果不发生……’。这句话的意思是‘我们明天去公园，只要不下大雨’，所以‘除非’最合适。
我不会告诉他这个秘密，除非他答应保守秘密。
原句“除非他答应保守秘密”是“我不会告诉他这个秘密”的例外情况。选项d“他答应保守秘密，我才会告诉他”准确地表达了这一层意思，即这个答应是告诉秘密的前提。
______，______，______，______。
这句话的意思是‘我之所以能成功，是因为我不像你那样不努力’，或者更直接地理解为‘除非你不努力，否则我不会成功’。但考虑到选项，最符合“除非”用法的可能是“我成功，除非你不努力”，意为‘我能成功，是因为你没有努力’，但这不符合逻辑。更合理的组合是“除非你努力，否则我不会成功”，但选项不全。如果理解为“我能成功，除非你不努力”（即，只要你不努力，我就不能成功），则句子结构不完整。最符合语法且逻辑通顺的可能是“除非你不努力，我不会成功”，但选项不全。根据提供的选项，最接近且有一定逻辑的是“我成功，除非你不努力”，但这句在中文里表达不够自然。更自然的表达是“除非你努力，否则我不会成功”或“只有努力，我才能成功”。考虑到是造句练习，我们选择一个相对合理的结构：‘我成功，除非你不努力’，虽然表达略显奇怪，但结构上符合‘A，除非 B’的模式。
Score: /3
Summary
The word '除非' (chúfēi) means 'unless' or 'only if', indicating a condition that, if not met, leads to the outcome stated in the main clause.
- Unless something happens, the main clause will occur.
- Introduces a condition that must not be met for something else to happen.
- Used to state exceptions or requirements.
Condition and Consequence
Remember 'unless' introduces the condition that must NOT be met for the main outcome to happen.
Avoid Direct Translation
Don't directly translate English 'unless' into Chinese in all contexts. Consider '只有' (only) or '如果...不...' (if not) for different nuances.
Expressing Rules Clearly
Using '除非' helps clearly define rules or boundaries, common in Chinese communication for setting expectations.
Examples
4 of 4除非你请客，否则我才不去。
Unless you treat me, I won't go.
除非得到上级的批准，否则不得擅自行动。
Unless approved by superiors, unauthorized actions are forbidden.
除非我睡着了，不然我一定会听到门铃响。
Unless I fell asleep, I definitely would have heard the doorbell.
这项技术除非经过严格测试，否则不能投入市场。
This technology cannot be launched unless it undergoes rigorous testing.
Related Content
This Word in Other Languages
Related Vocabulary
More academic words
缺席
B1The state of being absent from a place or event where one is expected to be, such as a class, meeting, or ceremony.
抽象的
A2Abstract.
抽象地
B1In an abstract manner; conceptually.
艰深
B1Profound; abstruse; recondite.
学术性
A2Academic; scholarly; relating to education and scholarship.
学术化
B1Academic; characterized by formal study or research.
学术会议
A2Academic conference; a formal meeting for academic discussions.
学术交流
B1Exchange of ideas, information, and research among scholars.
学术期刊
B1A periodical publication containing scholarly articles.
教务处
A2Academic affairs office; department handling educational administration.
