1. a confident and forceful statement of fact or belief
對事實或信念自信而有力的陳述
He made the bold assertion that he could finish the project alone.
他大膽地斷言自己可以獨自完成這個專案。
Her assertion about the company's future profits was met with skepticism.
她對公司未來利潤的斷言遭到了質疑。
Assertion Meaning（定義、用法、例句與發音）
assertion
noun
快速理解
What does "Assertion" mean?What are 2-3 core uses of "Assertion"?
指對某事的聲明或主張，通常帶有自信或堅定的語氣。
- 1
聲明/主張
EN: A confident and forceful statement of fact or belief.
翻譯: 對事實或信念自信且有力的陳述。
- 2
斷言/斷定
EN: The act of stating something as true, often without providing proof.
翻譯: 將某事陳述為真實的行為，通常未提供證據。
- 3
維護/堅持
EN: The act of asserting one's rights, authority, or identity.
翻譯: 維護自身權利、權威或身份的行為。
- 4
（程式）斷言
EN: A statement in a program that a condition is true, used for debugging.
翻譯: 程式中用於除錯、聲明某條件為真的陳述。
小提醒：注意 'assertion' 與 'claim' 的細微差別：'assertion' 語氣更強、更自信，常暗示說話者對其真實性毫不懷疑；'claim' 則可能暗示需要驗證或存在爭議。
發音（How to Pronounce "Assertion" in English）
How to pronounce "Assertion" in English?"Assertion" US vs UK pronunciation
點擊下方的 US / UK 按鈕可播放發音。
Real-life Examples of "Assertion" from YouTube Videos
Charles Hazlewood: Trusting the ensemble
TED
“And if I can broaden this out for a second, I'm willing to bet that every single one of you sitting in this room would be happy to speak with acuity, with total confidence, about movies, probably about literature, But how many of you would be able to make a confident assertion about a piece of classical music?”
(1 out of 1)
Definitions（定義）
What are the definitions of "Assertion"?How does "Assertion" change by context?
2. the act of asserting something or oneself
主張某事或堅持己見的行為
The negotiation required the assertion of our rights from the beginning.
這場談判從一開始就需要我們主張自己的權利。
Her quiet assertion of authority surprised everyone in the meeting.
她在會議中不動聲色地展現權威，讓所有人都感到驚訝。
3. a statement presented as true without necessarily providing proof
未經證實但被當作事實提出的陳述
The article was full of unsubstantiated assertions.
這篇文章充滿了未經證實的斷言。
You cannot build a strong argument on mere assertion.
你不能僅憑空泛的斷言來建立有力的論點。
4. (in computing/logic) a statement that a condition is true, used for debugging or validation
（計算機/邏輯）用於除錯或驗證，聲明某條件為真的陳述
The programmer added an assertion to check that the input value was not null.
程式設計師添加了一個斷言來檢查輸入值是否為空。
If the assertion fails, the program will throw an error.
如果斷言失敗，程式將拋出錯誤。
Grammar & Patterns（句型）
What are common sentence patterns for "Assertion"?How to make natural sentences with "Assertion"?
| Pattern | Meaning | Example |
|---|---|---|
| make an assertion | 提出主張 | He made a bold assertion about the future of the company. (他對公司的未來提出了一個大膽的主張。) |
| challenge/refute an assertion | 質疑/反駁某個說法 | The data was used to refute his earlier assertion. (該數據被用來反駁他先前的說法。) |
| assertion + that-clause | 帶有 that 子句的斷言 | Her assertion that the project was on schedule proved to be false. (她關於項目按時進行的斷言被證明是錯誤的。) |
| support/back up an assertion | 支持/證實某個主張 | You need evidence to support such a strong assertion. (你需要證據來支持如此強烈的主張。) |
| a baseless/false assertion | 一個毫無根據/錯誤的斷言 | The article was full of baseless assertions. (這篇文章充滿了毫無根據的斷言。) |
用法說明
How is "Assertion" different from similar structures?What usage mistakes are common with "Assertion"?
assertion that vs assertion of
- assertion that 後接一個完整的子句（that-clause），用來具體說明斷言的內容是什麼。這是表達「斷言」內容最直接、最常見的結構。
- assertion of 後接名詞或名詞片語，強調的是對某種權利、事實或屬性的「宣稱」或「主張」。
- 在正式寫作或論述中，assertion that 用於提出明確的論點；assertion of 則常用於法律、哲學或政治語境，宣稱某種抽象概念（如權利、獨立性）。
- 兩者有時可互換，但 assertion that 更側重「聲稱的內容」，而 assertion of 更側重「聲稱的行為或對象」。 EN: His main assertion was that the data had been manipulated from the start. 翻譯: 他的主要斷言是，數據從一開始就被篡改了。
EN:The document contained a bold assertion of the company's intellectual property rights.
翻譯:該文件包含對公司智慧財產權的大膽主張。
EN:She challenged his assertion that all technological progress is inherently good.
翻譯:她反駁了他「所有科技進步本質上都是好的」這一斷言。
EN:The rebellion began with an assertion of independence from central authority.
翻譯:這場叛亂始於宣稱要脫離中央權威獨立。
總結建議
在陳述具體觀點或事實時，使用 assertion that；在宣稱權利、屬性或不具體的抽象概念時，則使用 assertion of。
易混淆對比
What is the difference between "Assertion" and similar words?How to choose "Assertion" vs alternatives?
assertion vs claim
assertion 通常指未經證實的陳述，語氣較為直接；claim 則常指有待證實或可能引起爭議的聲稱。
assertion vs statement
assertion 帶有更強的主觀斷言色彩；statement 則是較為中性、客觀的陳述。
assertion vs allegation
assertion 是較為廣泛的斷言；allegation 特指未經證實的指控，常帶有負面含義。
口語用法
How is "Assertion" used in spoken English?What is the spoken vs formal difference for "Assertion"?
引述
在對話中，當你轉述他人的說法或觀點時，可以用 "assertion" 來指稱那個說法，語氣通常較為中立。 EN: I was taken aback by his assertion that the project was already doomed. 翻譯: 他斷言這個專案已經完蛋了，讓我大吃一驚。
EN:Her main assertion during the meeting was that we need more data.
翻譯:她在會議中的主要論點是我們需要更多數據。
語氣強調
在口語中，常與 "bold"、"confident"、"strong" 等形容詞連用，來強調該斷言的大膽或自信程度。 EN: That's a pretty bold assertion to make without any proof. 翻譯: 在沒有任何證據的情況下，這可是個相當大膽的斷言。
EN:She backed up her confident assertion with solid examples.
翻譯:她用具體的例子支持了自己自信的斷言。
停頓填充
有時在組織思緒或尋找合適字眼時，會用 "the assertion that..." 作為一個引導子句的開頭，帶出接下來要討論的內容。 EN: Well, the assertion that costs are spiraling needs to be examined closely. 翻譯: 嗯，關於成本正在急遽上升的這個說法，需要仔細檢視。
EN:So, if we challenge the assertion that the market is saturated, new opportunities might appear.
翻譯:所以，如果我們挑戰市場已經飽和的這個論斷，新的機會或許就會出現。
正式書寫注意：在學術或正式商業寫作中，"assertion" 通常指需要證據支持的「論點」或「主張」。口語中較隨意的用法（如作為停頓填充）應避免在正式寫作中出現，以保持論述的嚴謹性。
常見短語
What common collocations use "Assertion"?What fixed phrases with "Assertion" should I remember?
make an assertion
verb + an assertion
提出主張；斷言
challenge an assertion
verb + an assertion
質疑某個主張
support an assertion
verb + an assertion
支持某個主張
bold assertion
adjective + assertion
大膽的主張
mere assertion
adjective + assertion
僅僅是斷言；空口無憑的主張
assertion of power
assertion + of + noun
權力的宣示
assertion of rights
assertion + of + noun
權利的聲張
常見錯誤
What are common mistakes with "Assertion"?Which "Assertion" sentences look correct but are wrong?
×He made an assertion that he is right.
✓He made the assertion that he is right.
當 assertion 後面接 that 子句時，通常使用定冠詞 'the' 來指稱這個特定的聲明內容，而不是泛指一個聲明。
×His assertion about the project was proved.
✓His assertion about the project was proven / proved to be correct.
Assertion 本身是一個聲明或主張，不能直接被 'proved'（證明）。需要說明被證明是正確的、錯誤的，或是被證實了。
×She said an assertion in the meeting.
✓She made an assertion / stated an assertion in the meeting.
與 'assertion' 搭配的動詞通常是 'make', 'state', 'put forward', 'challenge', 'deny', 'support' 等，而不是 'say'。'Say' 用於一般性的說話，而 'assertion' 暗示一個更正式或有力的聲明。
×It's just your assertion, without any proves.
✓It's just your assertion, without any proof / evidence.
'Assertion'（主張）是缺乏證據的聲明，因此與其搭配表示「缺乏證據」時，應使用不可數名詞 'proof' 或 'evidence'，而不是可數名詞 'proves'（'prove' 是動詞）。
×I assertion that this is the best solution.
✓I assert that this is the best solution. / My assertion is that this is the best solution.
'Assertion' 是名詞，不能直接當動詞使用。要表達「我主張...」應使用動詞 'assert' 或名詞片語 'My assertion is that...'。
詞形變化
What are the word forms of "Assertion"?What are tense/participle forms of "Assertion"?