When you want to say something is definitely going to happen, you can use 必定 (bìdìng). It means "certainly" or "bound to."
You often put 必定 before a verb or an adjective to show strong certainty.
For example, if you say "明天他必定来," it means "He will certainly come tomorrow."
It's a useful word when you are very sure about an outcome.
When you want to express certainty in Chinese, 必定 (bì dìng) is a great word to use. It means "certainly," "bound to," or "must." You can use it when you are very confident that something will happen or is true.
For example, if you say "他必定会来" (Tā bì dìng huì lái), it means "He will certainly come." It's stronger than just saying "他会来" (Tā huì lái), which means "He will come." Think of it as adding extra emphasis to your statement.
You'll often see 必定 used in situations where there's a strong logical conclusion or a promise. It's a useful adverb to show your conviction.
Alright, let's talk about some common pitfalls when using 必定 (bìdìng). This word means "certainly," "bound to," or "must." It indicates strong certainty or inevitability. While it might seem straightforward, there are a few common errors English speakers make. We're going to break them down so you can avoid them.
§ Mistake 1: Confusing 必定 (bìdìng) with 一定 (yīdìng)
This is probably the most frequent mistake. Both 必定 (bìdìng) and 一定 (yīdìng) can mean "certainly" or "definitely." However, their nuances are different, and using them interchangeably can sound awkward or even incorrect.
- The Key Difference
- 必定 (bìdìng) emphasizes an objective inevitability or a strong logical conclusion. It's about something that *will* happen regardless of personal will or desire. 一定 (yīdìng) can also express certainty, but it often carries a stronger sense of subjective determination, a command, or a strong suggestion.
Let's look at some examples to clarify:
-
If you want to say, "You must come tomorrow" (as a command or strong request), you'd typically use 一定 (yīdìng):
你一定要来。
_You definitely need to come._ (a command/strong request)
-
If you're talking about a natural outcome or a logical consequence, 必定 (bìdìng) is more appropriate:
努力学习必定会有好结果。
_Studying hard will certainly have good results._ (an inevitable outcome)
§ Mistake 2: Using 必定 (bìdìng) for Personal Opinion or Speculation
While 必定 (bìdìng) expresses certainty, it's generally used for objective truths, logical conclusions, or events that are truly bound to happen. It's not typically used for expressing a personal strong opinion or speculation, even if you are very confident about it. For that, you might use 肯定 (kěndìng) or even just 一定 (yīdìng) in some contexts.
- When not to use 必定
- Avoid 必定 (bìdìng) when you're just making a strong guess or giving your personal, subjective assurance. It's a stronger, more absolute word than what's needed for most personal predictions.
Consider this:
-
If you want to say, "I'm sure he'll like this gift," a more natural way is:
他肯定会喜欢这个礼物。
_He will certainly like this gift._ (a confident personal opinion)
-
Using 必定 (bìdìng) here would sound overly formal or as if it's an undeniable fact, which it probably isn't in this context:
他必定会喜欢这个礼物。
_He is bound to like this gift._ (Sounds a bit strong, almost like you have scientific proof!)
§ Mistake 3: Overuse in Everyday Conversation
必定 (bìdìng) has a somewhat formal and strong tone. While perfectly correct, it's not the most common word for expressing simple certainty in casual, daily conversations. In many informal situations, 一定 (yīdìng) or even 肯定 (kěndìng) might be more natural, depending on the exact nuance.
- Keep it Natural
- If you find yourself using 必定 (bìdìng) frequently for every instance of "certainly" or "must," pause and consider if a softer or more common alternative like 一定 (yīdìng) or 肯定 (kěndìng) would fit better.
For instance, if someone asks if you're coming to a party and you want to confirm:
-
"I will definitely come." A common and natural response would be:
我一定会去。
_I will definitely go._
-
Using 必定 (bìdìng) here, while not strictly wrong, would sound a bit heavy or overly dramatic for a casual confirmation:
我必定会去。
_I am bound to go._ (Sounds like you have no choice in the matter!)
By understanding these distinctions, you can use 必定 (bìdìng) more accurately and naturally, making your Chinese sound much more fluent.
§ Understanding 必定: The Core Meaning
The Chinese word 必定 (bìdìng) is an adverb. It means "certainly," "bound to," or "must." It expresses a very strong conviction about an outcome or situation. Think of it as saying, "it is absolutely certain to happen."
- DEFINITION
- Certainly; bound to; must.
我们必定会成功。
Translation hint: We will certainly succeed.
他这么努力，必定能考上好大学。
Translation hint: He works so hard, he is bound to get into a good university.
§ Comparing 必定 with Similar Words
Chinese has several words that can express certainty, and it's important to understand their nuances. Let's look at 必定 and compare it with some common alternatives.
一定 (yīdìng): This is probably the most common word for "certainly" or "definitely."
你一定要来。
Translation hint: You must come. (This is a strong request/order.)
明天一定会下雨。
Translation hint: It will definitely rain tomorrow. (A prediction with high confidence.)
While you could use 必定 here, it would sound a bit more formal or even dramatic. 必定 often implies a logical necessity or an unavoidable outcome, whereas 一定 can also express a firm intention or a strong opinion.
必然 (bìrán): This word also means "inevitably" or "certainly," and is quite close in meaning to 必定.
失败是成功之母，这是必然的道理。
Translation hint: Failure is the mother of success, this is an inevitable truth.
Here, 必然 fits perfectly because it describes a universal, logical truth. While you could technically use 必定, 必然 sounds more appropriate for such a statement. 必定 is often used when discussing events or actions that are bound to happen due to specific circumstances or strong resolve.
肯定 (kěndìng): This word can mean "certainly," "definitely," or "to affirm."
他肯定会帮你。
Translation hint: He will certainly help you.
In this sentence, 肯定, 一定, and 必定 could all work, but they would convey slightly different shades of meaning. 肯定 and 一定 are more common in everyday speech for general certainty. 必定 retains that stronger, more formal, or more impactful nuance.
§ When to Use 必定
Use 必定 when you want to express a very strong, often almost fated, certainty. It implies that there's no doubt whatsoever, and the outcome is fixed or unavoidable due to existing conditions or intentions. It's stronger than 一定 in its assertion of certainty.
Consider these situations:
- When expressing a firm resolve or a strong promise: "我必定完成任务。(I will certainly complete the task.)"
- When predicting an outcome that seems inevitable based on current information: "按照这个趋势，他必定会赢。(Following this trend, he is bound to win.)"
- In more formal or written contexts where a strong, unambiguous statement of certainty is required.
While you can often substitute 必定 with 一定, choosing 必定 adds an extra layer of conviction and solemnity to your statement. If you want to sound particularly emphatic about an unavoidable future event or a strong commitment, 必定 is your word.
How Formal Is It?
"根据现有证据，事故的发生是必然的。"
"你肯定能考上大学。"
"我明天一定来。"
"妈妈肯定会给你买冰淇淋。"
"这事儿铁定没跑了。"
豆知識
Both characters have ancient origins and appear in early Chinese texts. The combination emphasizes an unwavering certainty.
難易度
short
short
short
short
次に学ぶべきこと
前提知識
次に学ぶ
上級
レベル別の例文
他明天必定来。
He *certainly* comes tomorrow.
我今天必定完成作业。
I *must* finish homework today.
下雨天路必定很滑。
On rainy days, the road is *bound to be* slippery.
如果你努力，你必定成功。
If you work hard, you *will certainly* succeed.
这个方法必定有效。
This method is *bound to be* effective.
我必定会去看你。
I *will certainly* go see you.
他们必定知道这件事。
They *must* know about this.
这双鞋子穿起来必定很舒服。
These shoes *are bound to be* very comfortable to wear.
你这么努力学习，这次考试必定会取得好成绩。
You study so hard, you are certainly going to get good grades on this exam.
如果你不听劝告，迟早必定会后悔的。
If you don't listen to advice, sooner or later you are bound to regret it.
我们计划得很周密，这次活动必定会成功。
Our plan is very thorough, this event must succeed.
经过这么长时间的训练，他的球技必定进步了很多。
After such a long period of training, his ball skills must have improved a lot.
这么重要的决定，他必定已经深思熟虑过了。
Such an important decision, he must have thought it through carefully.
天气预报说今天有大雨，出门必定要带伞。
The weather forecast says there will be heavy rain today, you must bring an umbrella when you go out.
只要我们齐心协力，这项任务必定能够完成。
As long as we work together, this task is certainly achievable.
他今天这么高兴，必定是发生了什么好事。
He is so happy today, something good must have happened.
虽然任务艰巨，但他凭借着坚定的信念和卓越的能力，必定能够克服万难，取得最终的胜利。
Although the task is arduous, with his firm conviction and excellent ability, he is certainly able to overcome all difficulties and achieve final victory.
必定 + Verb Phrase: emphasizes the certainty of an outcome due to specific qualities or efforts.
面对如此复杂多变的市场环境，若没有清晰的战略规划和灵活的应变措施，企业必定会陷入被动，难以持续发展。
Facing such a complex and volatile market environment, without clear strategic planning and flexible adaptive measures, enterprises are bound to fall into a passive position and find it difficult to achieve sustainable development.
若没有...，必定会...: highlights an inevitable negative consequence if a certain condition is not met.
经过长时间的深入研究和反复实验，科学家们相信，这项突破性的技术创新必定会给人类社会带来深远的影响，彻底改变我们的生活方式。
After long-term in-depth research and repeated experiments, scientists believe that this groundbreaking technological innovation is bound to bring profound impacts to human society and completely change our way of life.
必定会 + Verb Phrase: expresses strong confidence in a future outcome based on current developments or research.
一个国家若想在国际舞台上赢得尊重和话语权，就必定要提升自身的综合国力，尤其是科技创新和文化软实力。
If a country wants to gain respect and influence on the international stage, it must certainly enhance its comprehensive national strength, especially technological innovation and cultural soft power.
就必定要 + Verb Phrase: indicates a necessary action to achieve a specific goal.
历史的经验告诉我们，任何企图通过霸权主义和单边主义来维护自身利益的行为，都必定会遭到国际社会的普遍反对和抵制。
Historical experience tells us that any attempt to maintain one's own interests through hegemony and unilateralism is bound to be met with widespread opposition and resistance from the international community.
都必定会 + Verb Phrase: emphasizes the inevitability of a negative consequence for certain actions, often with a tone of warning or prediction.
对于那些长期致力于环境保护事业的志愿者来说，他们的辛勤付出和无私奉献，必定会为子孙后代留下一个更美好的地球。
For those volunteers who have long been dedicated to environmental protection, their hard work and selfless dedication will certainly leave a better planet for future generations.
必定会为...留下...: expresses a strong belief in the positive and lasting impact of current efforts.
在快速变化的信息时代，若不能保持终身学习的态度和能力，个人在职场上必定会面临被淘汰的风险。
In the rapidly changing information age, if one cannot maintain a lifelong learning attitude and ability, individuals are bound to face the risk of being eliminated in the workplace.
若不能...，必定会面临...: highlights the unavoidable negative outcome of failing to adapt or improve.
这部电影以其独特的叙事手法和深刻的主题内涵，必定会在观众心中留下难以磨灭的印象，引发广泛的讨论和思考。
With its unique narrative style and profound thematic content, this film is bound to leave an indelible impression on the audience and spark widespread discussion and reflection.
必定会在...留下...: indicates a strong expectation of a lasting impact or impression.
語源
Composed of 必 (bì) and 定 (dìng).
元の意味： 必 (bì) originally meant 'must' or 'certainly', often depicting a heart with an arrow pointing to it, symbolizing a fixed intention or determination. 定 (dìng) means 'to settle', 'to fix', or 'certain'.
Sino-Tibetan, Sinitic languages, Mandarin Chinese.文化的な背景
必定 is used when there's a very high degree of certainty about an outcome or action. It's stronger than just saying 'will' (会) and implies that something is inevitable or bound to happen due to logical reasons or strong determination. It's commonly used in everyday speech and writing to express conviction.
実生活で練習する
実際の使用場面
Expressing certainty about an outcome or event.
- 他必定会来。
- He will certainly come.
- 这件事情必定成功。
- This matter is bound to succeed.
- 你这样努力，必定有回报。
- If you work this hard, you will surely be rewarded.
Making a strong prediction based on current circumstances.
- 看天气，明天必定下雨。
- Looking at the weather, it will definitely rain tomorrow.
- 照这个速度，我们必定会迟到。
- At this speed, we will certainly be late.
- 如果不好好学习，考试必定不及格。
- If you don't study hard, you will definitely fail the exam.
Stating something that is unavoidable or a given.
- 人都会老，这是必定发生的事情。
- Everyone gets old; this is something that is bound to happen.
- 成功必定需要付出努力。
- Success definitely requires effort.
- 犯了错误，必定要改正。
- If you make a mistake, you must correct it.
Emphasizing a strong personal conviction.
- 我必定支持你的决定。
- I will certainly support your decision.
- 我相信他必定能做到。
- I believe he can definitely do it.
- 这件事情我必定负责到底。
- I will certainly take responsibility for this matter until the end.
In more formal or written contexts to express inevitability.
- 历史的进程是必定向前发展的。
- The course of history is bound to move forward.
- 凡是生命，都必定有终点。
- Everything that lives is bound to have an end.
- 这项改革必定会带来积极影响。
- This reform will certainly bring positive effects.
会話のきっかけ
"你觉得未来五年，科技发展必定会带来哪些大变化？"
"你有没有什么特别想做的事情，觉得它必定会成功的？"
"你认为一个人在生活中，哪些方面是必定要坚持的？"
"在你的家乡，有什么事情是每年必定会发生的传统？"
"你觉得如果你去一个新城市生活，什么东西是必定要准备的？"
日記のテーマ
写下三件你认为在未来一年内，自己必定能完成的事情，并思考如何实现。
描述一次你曾经非常确定某事会发生，结果也确实发生了的经历。你当时为什么那么确定？
思考一下，为了达到你的一个长期目标，你必定要克服哪些困难？
写一篇关于你对“人生的意义”的看法，你觉得人生中什么事情是必定会经历的？
想象一下五年后的自己，你认为那时的你必定拥有什么品质或成就？
よくある質問
10 問Both 必定 (bìdìng) and 一定 (yīdìng) mean 'certainly' or 'must,' but they have a subtle difference. 必定 (bìdìng) emphasizes that something is bound to happen based on logic or a foregone conclusion. It's often used when there's a strong reason or inevitability. 一定 (yīdìng) is more about a strong personal conviction or a firm request/command. You'll hear 一定 (yīdìng) more often in everyday conversation.
Not usually. For personal promises, 一定 (yīdìng) is much more natural. For example, 'I will definitely come' would be '我一定会来' (wǒ yīdìng huì lái), not '我必定会来' (wǒ bìdìng huì lái).
Yes, 必定 (bìdìng) tends to be more formal and literary than 一定 (yīdìng). You'll see it more in written contexts or formal speeches. 一定 (yīdìng) is the everyday choice.
No. You cannot use 必定 (bìdìng) to ask a question like 'Are you certainly going?' You would use 一定 (yīdìng) for that: '你一定去吗?' (nǐ yīdìng qù ma?).
必定 (bìdìng) is best for situations where something is logically inevitable, a natural consequence, or a strong prediction based on facts. Think 'cause and effect' or 'if X, then Y will certainly happen.'
You could say '明天必定会下雨' (míngtiān bìdìng huì xiàyǔ). This implies that there's a strong, almost certain, reason for the rain, like a weather forecast with high confidence.
Yes, you can use 必定 (bìdìng) with '不' (bù) to mean 'certainly not' or 'definitely won't.' For example, '他必定不会同意' (tā bìdìng bù huì tóngyì) - He certainly won't agree.
If you study hard, you will certainly succeed. - '如果你努力学习，你必定会成功' (rúguǒ nǐ nǔlì xuéxí, nǐ bìdìng huì chénggōng). Here, success is a logical outcome of hard work.
In some cases, especially when expressing a strong certainty, they might seem interchangeable. However, always remember the nuance: 必定 (bìdìng) for logical inevitability, 一定 (yīdìng) for personal conviction or common usage. When in doubt, 一定 (yīdìng) is the safer, more common choice.
必定 (bìdìng) usually implies a lack of choice or that the outcome is beyond individual control, driven by circumstances or natural law. It's about what *has* to happen, not necessarily what someone *wants* to happen.
自分をテスト 30 問
他___ 会来。
Here, '必定' (bìdìng) means 'certainly' or 'bound to', indicating a high degree of certainty that he will come. The other options express different levels of possibility or frequency.
下雨了，地上___ 是湿的。
'必定' (bìdìng) conveys that if it rains, the ground is 'certainly' or 'bound to' be wet. It's a logical consequence.
学中文___ 会很有趣。
Using '必定' (bìdìng) here means 'learning Chinese is certainly going to be interesting'. It expresses a strong belief.
努力学习，你___ 会成功。
'必定' (bìdìng) emphasizes that with hard work, success is 'bound to' happen, conveying a strong sense of inevitability.
今天的作业很多，我___ 要熬夜了。
Given a lot of homework, '必定' (bìdìng) suggests that staying up late is 'certainly' or 'must' be the case. It's a necessary outcome.
他说了他会来，所以他___ 会来。
Because he said he would come, '必定' (bìdìng) means he 'certainly' will come, indicating a high level of assurance based on his word.
你___会喜欢这个地方。
Here, '必定' emphasizes certainty, meaning 'you will certainly like this place.'
如果你努力学习，___会成功。
This sentence uses '必定' to express the certainty of success with effort.
下雨了，他___在家里。
Given that it's raining, it's very certain that he is at home, thus '必定' is appropriate.
他每天都练习，所以中文___会进步。
Consistent practice leads to certain improvement, so '必定' is the correct choice here.
如果你不听话，妈妈___会生气。
Disobedience will certainly make a mother angry, so '必定' is suitable.
太阳从东边升起，西边落下，这是___的。
The rising and setting of the sun is a certain and unchangeable fact, requiring '必定'.
This sentence encourages someone to succeed with effort.
The weather forecast predicts rain.
Someone certainly knows about this matter.
Read this aloud:
我必定准时到。
Focus: bì dìng
あなたの回答：
Speech recognition is not supported in your browser. Try Chrome or Edge.
Read this aloud:
你必定要记住我的话。
Focus: yào jì zhù
あなたの回答：
Speech recognition is not supported in your browser. Try Chrome or Edge.
Read this aloud:
这次考试他必定能考好。
Focus: kǎo hǎo
あなたの回答：
Speech recognition is not supported in your browser. Try Chrome or Edge.
Imagine you have a big exam tomorrow. Write a short paragraph about how you are preparing and why you are certain you will do well, using '必定'.
Well written! Good try! Check the sample answer below.
Sample answer
明天我有一个重要的考试，所以我今天晚上必定会努力复习。我已经准备了好几个星期了，对所有知识点都非常熟悉。我相信我必定会考得很好。
Write a short message to a friend encouraging them about a challenge they are facing. Use '必定' to express your confidence in them.
Well written! Good try! Check the sample answer below.
Sample answer
我知道你最近遇到了一些困难，但是你这么聪明又努力，我相信你必定会克服的。加油！我支持你，你必定能成功。
Describe a future event that you are absolutely sure will happen, using '必定'.
Well written! Good try! Check the sample answer below.
Sample answer
随着科技的发展，我相信未来我们的生活质量必定会越来越好。人类的智慧是无穷的，我们必定会找到解决各种问题的方法。
根据这段话，作者对这部电影的态度是什么？
Read this passage:
这部电影的情节非常精彩，演员的表演也十分出色。我向你保证，你看了这部电影，必定会爱上它。这是我今年看过的最好的一部电影。
根据这段话，作者对这部电影的态度是什么？
作者使用了“必定会爱上它”来表达强烈推荐和肯定的态度。
作者使用了“必定会爱上它”来表达强烈推荐和肯定的态度。
根据这段话，学好外语的关键是什么？
Read this passage:
学好一门外语需要时间和毅力。如果你每天坚持学习，多听多说，多练习，那么你的进步是必定会发生的。成功从来不是偶然的。
根据这段话，学好外语的关键是什么？
文中提到“如果你每天坚持学习，多听多说，多练习，那么你的进步是必定会发生的”，强调了坚持的重要性。
文中提到“如果你每天坚持学习，多听多说，多练习，那么你的进步是必定会发生的”，强调了坚持的重要性。
作者对这家餐厅的总体评价是什么？
Read this passage:
这家餐厅的菜肴不仅味道好，而且服务也很周到。每次来这里用餐，都感觉很愉快。我敢说，任何来这里的人必定会有一个美好的体验。
作者对这家餐厅的总体评价是什么？
作者用“敢说，任何来这里的人必定会有一个美好的体验”表达了高度的肯定和推荐。
作者用“敢说，任何来这里的人必定会有一个美好的体验”表达了高度的肯定和推荐。
The correct order is 'Subject + Adverb + Verb + Object'. Here, '他' (he) is the subject, '努力' (hard) modifies the verb, '必定会' (certainly will) is the adverbial phrase, and '成功' (succeed) is the verb.
The sentence structure is 'Subject + Adverb + Modal Verb + Adverbial Phrase + Verb + Object'. '我们' (we) is the subject, '必定能' (certainly can) is the adverb and modal verb, '按时' (on time) is the adverbial phrase, and '完成项目' (complete the project) is the verb and object.
This is a conditional sentence. The first clause is '如果你好好休息' (If you rest well), followed by the second clause '明天你必定会好起来' (tomorrow you will certainly get better).
/ 30 correct
Perfect score!
関連コンテンツ
workの関連語
充裕的
B2Abundant, ample, or sufficient in quantity.
事故
A2accident; mishap
依照
A2According to; in accordance with.
准确地
A2accurately, precisely
做到
A2to achieve; to accomplish
积极地
A2actively; enthusiastically
应变
B2Adaptive; capable of dealing with emergencies.
行政
A2Administration; the management of affairs.
过后
A2Afterwards; at a later or subsequent time.
赞同
A2To approve of, to endorse; to agree with or support.
