In 15 Seconds
- Expresses that something is naturally expected or logically certain.
- Used for moral duties, logical results, or obvious facts.
- Can be positive (logical) or negative (taking someone for granted).
Meaning
This phrase describes something that is naturally expected or taken for granted. It is the feeling that 'of course it should be this way' because it follows logic, duty, or common sense.
Key Examples
3 of 6Accepting a party invitation
你的生日派对，我参加是理所当然的。
It's only natural that I attend your birthday party.
Discussing work ethics
作为员工，准时上班是理所当然的事。
As an employee, it stands to reason that you should be on time.
Complaining about an ungrateful friend
他把我对他的好当成理所当然。
He takes my kindness for granted.
Cultural Background
The phrase originates from the writings of Southern Song Dynasty philosopher Zhu Xi. It reflects the Confucian belief in a natural, moral order to the universe where everything has a proper place and function. Today, it is one of the most frequently used four-character idioms in both mainland China and Taiwan.
The 'Gratitude' Trap
In China, close friends often don't say 'thank you' for small favors because helping is considered `理所当然`. Saying thank you too much can actually create distance!
Don't be Arrogant
If you win an award, saying it was `理所当然` will make you lose friends fast. Use it for others' achievements, not your own.
In 15 Seconds
- Expresses that something is naturally expected or logically certain.
- Used for moral duties, logical results, or obvious facts.
- Can be positive (logical) or negative (taking someone for granted).
What It Means
理所当然 (lǐ suǒ dāng rán) is your go-to phrase for things that are obvious. It suggests that according to logic or morality, something is just right. Think of it as 'it goes without saying' or 'as a matter of course.' It is that feeling when the sun rises in the east. You don't question it; it just is.
How To Use It
You can use it as an adjective or an adverb. Often, it stands alone to confirm a situation. You might say someone takes your help 理所当然. This means they don't even say thank you! You can also use it to justify a decision. It fits perfectly at the start of a sentence to set the tone. It is like laying down a factual brick that nobody can move.
When To Use It
Use it when discussing responsibilities or logical outcomes. At work, it is 理所当然 to finish projects on time. With family, it is 理所当然 to help your parents. It is great for texting when a friend asks if you are coming to their party. 'Of course!' becomes 理所当然! It shows you are a person of logic and principle.
When NOT To Use It
Avoid using it if you want to sound humble. If someone praises your genius, don't say it is 理所当然. That makes you sound like a bit of a jerk! Also, don't use it for random coincidences. Winning the lottery isn't 理所当然. That is just pure luck. Keep it for things governed by rules, ethics, or clear patterns.
Cultural Background
This phrase comes from ancient Confucian roots regarding 'Li' (logic/social order). In Chinese culture, there is a strong sense of 'duty' within relationships. For example, children caring for elderly parents is seen as 理所当然. It isn't just a nice thing to do; it is the natural order of the universe. It reflects a society that values predictability and moral obligation.
Common Variations
You might hear people say 想当然 (xiǎng dāng rán). Be careful! That means 'to take something for granted' in a negative, delusional way. Another one is 顺理成章 (shùn lǐ chéng zhāng). This means something follows a logical progression, like a story unfolding. 理所当然 is much punchier and more common in daily speech.
Usage Notes
The phrase is highly versatile across all registers. It often appears in the pattern 'A...是理所当然的' or '把...看作理所当然'.
The 'Gratitude' Trap
In China, close friends often don't say 'thank you' for small favors because helping is considered `理所当然`. Saying thank you too much can actually create distance!
Don't be Arrogant
If you win an award, saying it was `理所当然` will make you lose friends fast. Use it for others' achievements, not your own.
The Power of Four
This is a 'Chengyu' (four-character idiom). Using these makes you sound much more fluent and culturally grounded than using simple words like 'of course'.
Examples
6你的生日派对，我参加是理所当然的。
It's only natural that I attend your birthday party.
Shows loyalty and friendship as a given.
作为员工，准时上班是理所当然的事。
As an employee, it stands to reason that you should be on time.
Used to state a professional standard.
他把我对他的好当成理所当然。
He takes my kindness for granted.
A very common way to express feeling used.
你把房间弄乱了，理所当然要你自己打扫。
You made the mess, so of course you should clean it up.
Used to teach responsibility.
为了公司的发展，我们理所当然应该支持这个计划。
For the company's growth, it is only right that we support this plan.
Adds a sense of objective necessity.
火锅这么好吃，多点几盘肉不是理所当然吗？
Hotpot is so good, isn't it only natural to order more meat?
Uses logic to justify a funny or indulgent action.
Test Yourself
Choose the correct phrase to complete the sentence about social responsibility.
保护环境是每个人___的责任。
Protecting the environment is a 'natural/obvious' responsibility for everyone.
Express that someone is being ungrateful.
你不应该把父母的帮助看作是___。
The phrase is used here to mean 'taking something for granted'.
🎉 Score: /2
Visual Learning Aids
Formality and Context Spectrum
Used with friends to justify small things.
Of course I'll help!
Standard daily use for facts and duties.
It's natural to pay taxes.
Used in speeches to argue for a logical path.
It is the inevitable conclusion.
Where to use 理所当然
Family Duties
Caring for elders
Workplace
Meeting deadlines
Friendship
Keeping secrets
Logic/Science
Water freezing at 0°C
Practice Bank
2 exercises保护环境是每个人___的责任。
Protecting the environment is a 'natural/obvious' responsibility for everyone.
你不应该把父母的帮助看作是___。
The phrase is used here to mean 'taking something for granted'.
🎉 Score: /2
Frequently Asked Questions
10 questionsNot at all! While it is a Chengyu, it is used constantly in daily conversation, movies, and texts like 这是理所当然的.
Yes, but it's heavier than 当然. Use it when there is a reason or a 'rule' behind the 'of course'.
当然 is a simple 'sure' or 'of course'. 理所当然 implies there is a principle or logic (理) making it so.
It can be if you use it to describe your own success. It sounds like you think you are entitled to it.
You use the structure 把...当成理所当然. For example: 别把我的忍让当成理所当然 (Don't take my tolerance for granted).
It is neutral. It becomes negative when you describe someone else's attitude of entitlement.
Yes, it is very effective for justifying a logical business move or a standard procedure.
Not exactly, but young people might just say 那肯定的 (nà kěndìng de) for a more casual 'definitely'.
Usually no, unless it's a logical result, like 下雨地会湿是理所当然的 (It's natural the ground gets wet when it rains).
A good opposite is 莫名其妙 (mò míng qí miào), which means something is baffling or makes no sense.
