Otherwise: ...否则...
……，否则……
State a condition or instruction followed by the negative consequence using 否则 (otherwise)
The first clause states what should be done or what the situation is. 否则 introduces the negative consequence that will occur if the condition is not met. It means "otherwise" or "or else."
否则 is more formal than 要不然 (informal "otherwise"). The first clause usually contains an instruction, suggestion, or condition, and 否则 warns about what happens if it is not followed. This pattern is common in rules, warnings, advice, and formal instructions.
Lesson Targets
Podcast
Podcast: Otherwise: ...否则... (……，否则……)
Listen to Jason & Amy explain the ……，否则…… pattern
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Understanding ……，否则……
Every language needs a way to warn about consequences: "Do X, otherwise Y will happen." In Chinese, 否则 is your formal "otherwise." When you say 我要认真复习，否则考试会不及格的, you are stating a plan (study seriously) and warning about the consequence of not doing so (failing the exam). 否则 carries weight and urgency — it signals that the consequence is real and undesirable. You will encounter it in workplace instructions, school rules, health advice, and any situation where someone issues a warning. The pattern is simple: first state what should happen, then use 否则 to introduce what will go wrong if it does not. The informal equivalent is 要不然, which you might use with friends, but 否则 is the standard form for writing, signs, announcements, and serious advice.
Key Points
- 否则 (fǒuzé) = "otherwise / or else" — introduces a negative consequence.
- More formal than 要不然 (yàobùrán), which is the casual equivalent.
- The first clause is typically an instruction, plan, or condition.
- The second clause (after 否则) is always a negative or undesirable outcome.
- Common in rules, warnings, advice, signs, and formal announcements.
- 否则 cannot introduce a positive outcome — the consequence must be bad.
- Often used with imperative or suggestion words: 一定要, 必须, 记得, 要.
Chinese signs, rules, and official announcements frequently use 否则 to state consequences clearly. From school rules (上课不能迟到，否则扣分) to traffic signs (禁止停车，否则罚款), 否则 is the standard connector for formal warnings. Understanding it helps you navigate official Chinese text.
Key Vocabulary
Example Sentences
我要认真复习，否则考试会不及格的。
I need to review seriously; otherwise, I'll fail the exam.
记得带卡，否则进不了办公室。
Remember to bring your card; otherwise, you can't get into the office.
上课前一定要预习好生词和课文，否则就听不懂老师讲的。
You must preview vocabulary and the text before class; otherwise, you won't understand what the teacher says.
快点儿走吧，否则要迟到了。
Let's go quickly; otherwise, we'll be late.
你必须多喝水，否则身体会不舒服。
You must drink more water; otherwise, you'll feel unwell.
请保持安静，否则会影响其他人。
Please keep quiet; otherwise, you'll disturb others.
出门前要看天气预报，否则可能会被雨淋到。
Check the weather forecast before going out; otherwise, you might get caught in the rain.
Common Mistakes
否则 must introduce the second clause (the consequence), not the first. The instruction or condition comes first, then 否则 + consequence.
否则 must introduce a NEGATIVE consequence. "Being healthier" is positive. The consequence of NOT exercising is getting weaker, so use a negative outcome.
The first clause should be the instruction (bring an umbrella), and 否则 introduces the negative consequence (getting rained on). The original sentence reverses the logic.
Practice Exercises
Tips & Tricks
Use 否则 in writing and formal speech; use 要不然 or 不然 in casual conversation.
The consequence after 否则 must ALWAYS be negative — something bad that happens if the condition is not met.
Practice by thinking of school or workplace rules and their consequences.
Common first-clause starters: 一定要, 必须, 记得, 请, 要 — all set up an instruction for 否则 to follow.
Homework
Write five warning sentences using 否则. Include: (1) a school rule, (2) health advice, (3) travel tip, (4) workplace instruction, (5) cooking instruction. Make sure the consequence after 否则 is always negative and realistic.