در ۱۵ ثانیه
- Sets a condition that triggers a specific result.
- Often paired with 'jiù' to show an immediate consequence.
- Works for both serious warnings and making firm plans.
معنی
This phrase is used to describe a condition that, once met, leads to an inevitable or significant result. It is like saying 'the moment that happens' or 'as soon as' to set up a hypothetical or real scenario.
مثالهای کلیدی
3 از 6Warning a friend about a spicy dish
一旦你吃了这个，你就停不下来。
Once you eat this, you won't be able to stop.
Discussing a work deadline
一旦合同签了，我们就不能改了。
Once the contract is signed, we cannot change it.
Texting about a meeting spot
我一旦到了，就给你发消息。
Once I arrive, I will send you a message.
زمینه فرهنگی
The term originates from ancient Chinese where 'dan' referred to a single morning. It carries a subtle weight of 'the point of no return,' reflecting a philosophical view on how singular moments define future outcomes.
The 'Jiù' Connection
Always keep `就` (jiù) in your back pocket. While not strictly mandatory, 90% of natural sentences use it to link the result to `一旦`.
Don't Overuse in Daily Chores
If you say `一旦我刷牙` (Once I brush my teeth), it sounds like a dramatic movie trailer. Use `一...就...` for boring daily stuff.
در ۱۵ ثانیه
- Sets a condition that triggers a specific result.
- Often paired with 'jiù' to show an immediate consequence.
- Works for both serious warnings and making firm plans.
What It Means
一旦 (yídàn) is a powerful conditional connector. It translates to "once" or "in case." It sets the stage for a specific event. Think of it as a tipping point. Once you cross that line, something else happens. It often implies a sense of consequence or a permanent shift. It is more formal than 要是 but very common in daily life.
How To Use It
You usually place 一旦 at the start of a clause. It is often paired with 就 (jiù) in the second part. The structure looks like: 一旦 [Condition], [Result]. For example: 一旦下雨，我们就取消 (Once it rains, we cancel). It acts like a trigger for the action that follows. You can use it for both positive and negative outcomes.
When To Use It
Use it when you want to sound certain about a consequence. It is great for giving advice or warnings. Use it at work when discussing project deadlines. Use it with friends when making plans with a 'Plan B.' It works perfectly in texting when setting conditions. It adds a touch of seriousness to your statements. It is the language of 'no turning back.'
When NOT To Use It
Don't use it for simple, repetitive habits. For "Once I wake up, I brush my teeth," use 一...就... instead. 一旦 feels a bit too heavy for mundane morning routines. Avoid it if you are unsure if the condition will ever happen. It implies a specific 'if and when' moment. If the situation is very casual, 如果 might feel more natural.
Cultural Background
The character 旦 represents the sun rising over the horizon. It literally means 'dawn' or 'a single day.' Historically, it suggested something happening in a very short time. In modern Chinese, it has evolved into this conditional 'once.' It reflects a Chinese cultural focus on cause and effect. It shows how one small action can change an entire situation.
Common Variations
You will often see it as 一旦...就... for immediate results. In formal writing, it might appear as 一旦...便.... If you are talking about a negative possibility, you might say 万一. While 一旦 means 'once it happens,' 万一 means 'in the unlikely event.' Both are cousins in the world of Chinese logic. Use 一旦 when the 'once' is the focus of the timeline.
نکات کاربردی
It sits comfortably between neutral and formal. It is perfect for situations where a clear condition leads to a clear result, but avoid it for mundane, repetitive habits.
The 'Jiù' Connection
Always keep `就` (jiù) in your back pocket. While not strictly mandatory, 90% of natural sentences use it to link the result to `一旦`.
Don't Overuse in Daily Chores
If you say `一旦我刷牙` (Once I brush my teeth), it sounds like a dramatic movie trailer. Use `一...就...` for boring daily stuff.
The Weight of Words
In Chinese culture, using `一旦` often signals that you are about to say something serious or cautionary. It commands attention!
مثالها
6一旦你吃了这个，你就停不下来。
Once you eat this, you won't be able to stop.
Uses the phrase to describe an addictive or inevitable reaction.
一旦合同签了，我们就不能改了。
Once the contract is signed, we cannot change it.
Highlights a formal 'point of no return' in a professional setting.
我一旦到了，就给你发消息。
Once I arrive, I will send you a message.
A common way to coordinate timing via text.
你一旦开始看这部剧，你的周末就没了。
Once you start watching this show, your weekend is gone.
Hyperbolic use to show how time-consuming something is.
一旦做出了决定，我就绝不后悔。
Once I've made a decision, I never regret it.
Shows strong personal resolve and determination.
一旦觉得不舒服，就要去看医生。
Once you feel unwell, you should go see a doctor.
Used to give logical advice based on a condition.
خودت رو بسنج
Choose the correct word to complete the 'Once... then...' structure.
一旦你准备好了，我们___出发。
`一旦` is almost always paired with `就` to indicate the result follows the condition.
Complete the sentence logically.
一旦下雪，路___会很滑。
This expresses a natural consequence: Once it snows, the road becomes slippery.
🎉 امتیاز: /2
ابزارهای بصری یادگیری
Formality of 'Once'
Using 'yì... jiù...' for simple habits.
我一回家就睡觉。
Using 'yídàn' for general conditions.
一旦开始就别停。
Using 'yídàn' in written contracts.
一旦违约，需付罚金。
When to use 一旦
Contracts
Once signed...
Warnings
Once it breaks...
Commitments
Once I promise...
Logic
Once A happens, B follows...
بانک تمرین
2 تمرینها一旦你准备好了，我们___出发。
`一旦` is almost always paired with `就` to indicate the result follows the condition.
一旦下雪，路___会很滑。
This expresses a natural consequence: Once it snows, the road becomes slippery.
🎉 امتیاز: /2
سوالات متداول
10 سوال如果 means 'if' and is a general hypothetical. 一旦 is more specific, meaning 'once it actually happens,' implying the condition is likely to occur or has a definite start point.
No, 一旦 is used for future conditions or general truths. For 'Once I arrived (in the past),' you would use 当我到达的时候 or simply 我到了以后.
Not at all! It's very common in texts when you want to be clear about a plan, like 一旦我下班，我就去找你 (Once I get off work, I'll find you).
一...就... is for immediate, often habitual actions like 我一回家就洗澡. 一旦 is for more significant conditions or 'point of no return' scenarios.
Yes, it is a connector. It sets a condition that requires a result or an action to follow in the sentence to make sense.
Absolutely! For example, 一旦你学会了中文，你会发现一个新世界 (Once you learn Chinese, you'll discover a new world).
It almost always goes at the very beginning of the sentence or right after the subject, like 你一旦... or 一旦你....
Very often. It is used to define terms in agreements, such as 一旦收到付款，我们就会发货 (Once payment is received, we will ship).
Usually no. 的话 is used with 如果. 一旦 is strong enough on its own and doesn't need the extra 'if' marker at the end.
There isn't a direct slang word, but in very casual speech, people might just use 等...了 (Děng... le) to mean 'Once... happens.'
عبارات مرتبط
要是
If (informal)
一...就...
As soon as... then...
万一
Just in case / What if (unlikely event)
假如
Supposing / If (formal/literary)
