assure 主要表示向他人保證某事，或確保某種結果。
保證、使確信
EN: to tell someone confidently that something is true or will happen.
翻譯: 自信地告訴某人某事是真的或將會發生。
確保、保障
EN: to make something certain to happen or be achieved.
翻譯: 使某事確定會發生或被達成。
使安心、消除疑慮
EN: to remove someone's doubts or fears.
翻譯: 消除某人的疑慮或恐懼。
為...投保（英式用法）
EN: to insure something, especially against someone's death (British English).
翻譯: 為某物（尤指針對某人死亡）投保（英式英語用法）。
小提醒：注意 assure 的常用句型是 assure someone (that)... 或 assure someone of something，其對象是「人」。若要表示「確保某事發生」，則常用 ensure。
點擊下方的 US / UK 按鈕可播放發音。
Real-life Examples of "Assure" from YouTube Videos
Steven Schwaitzberg: A universal translator for surgeons
TED
“Now that foundation is so important that a number of us from the largest general surgery society in the United States, SAGES, started in the late 1990s a training program that would assure that every surgeon who practices minimally invasive surgery would have a strong foundation of knowledge and skills necessary to go on and do procedures.”
1. to tell someone confidently that something is true or will happen, to remove doubt
向某人保證某事屬實或將會發生，以消除疑慮
I can assure you that the product is completely safe.
我可以向你保證，這個產品是完全安全的。
He assured his boss that the project would be finished on time.
他向老闆保證專案會準時完成。
2. to make something certain to happen or be achieved
確保某事發生或達成
Her excellent qualifications assured her a place in the final interview.
她出色的資歷確保了她進入最終面試。
Booking your tickets early will assure you of a seat.
提早訂票能確保你有座位。
3. to make someone feel confident and certain, especially about the future
使某人感到有信心和確定（尤指對未來）
The manager's calm demeanor assured the team during the crisis.
經理沉穩的舉止在危機中讓團隊感到安心。
His words did little to assure her about their financial security.
他的話並未讓她對他們的財務安全感到放心。
4. to insure something, especially someone's life
為某物（尤指某人的生命）投保
He assured his life for a substantial amount to protect his family.
他為自己的生命投保了一大筆金額以保護家人。
| Pattern | Meaning | Example |
|---|---|---|
| assure + someone | 向某人保證 | I assure you, everything will be fine. (我向你保證，一切都會沒事的。) |
| assure + someone + of + something | 向某人保證某事 | He assured me of his full support. (他向我保證他會全力支持。) |
| assure + someone + (that) + clause | 向某人保證… | She assured us that the project was on schedule. (她向我們保證專案進度正常。) |
| be assured of + something | 確信會得到某物 | You can be assured of a warm welcome. (你肯定會受到熱烈歡迎。) |
| rest assured (that) + clause | 放心，確信 | You can rest assured that your data is secure. (你可以放心，你的資料是安全的。) |
of 時，後面的名詞通常是已提及或雙方已知的抽象概念（如能力、品質、事實）。that 子句時，則可以完整陳述一個新的保證或承諾。
EN: He assured us of his full support.
翻譯: 他向我們保證會全力支持。EN:He assured us that he would give us his full support.
翻譯:他向我們保證他會給予我們全力支持。
EN:Can you assure me of the product's quality?
翻譯:你能向我保證這產品的品質嗎？
EN:Can you assure me that the product is of high quality?
翻譯:你能向我保證這產品是高品質的嗎？
若保證的對象是具體的「事情」或「承諾」，使用 assure someone that... 子句會更清晰；若強調對某個「抽象事實或特質」的保證，則可使用 assure someone of something 的結構。
assure vs ensure
「assure」側重於向某人做出保證以消除其疑慮，對象通常是人；「ensure」則側重於採取行動以確保某個結果或條件發生，對象通常是事物或事件。
assure vs insure
「assure」意為口頭保證或讓某人放心；「insure」則特指為防範財務損失而購買保險，是商業和法律用語。
assure vs reassure
「assure」是初次或一般性的保證；「reassure」則是在對方已經感到擔憂或不安後，再次給予保證以消除其焦慮。
在轉述他人承諾或保證時，常用 "assure" 來引述原話，語氣較為間接。 EN: He assured me the package would arrive today. 翻譯: 他向我保證包裹今天會到。
EN:She assured us there was nothing to worry about.
翻譯:她向我們保證沒什麼好擔心的。
為了加強保證的可信度，常與副詞如 "absolutely" 或 "personally" 連用，以示鄭重。 EN: I can absolutely assure you of our full support. 翻譯: 我可以絕對向你保證我們會全力支持。
EN:Let me personally assure you that your feedback is valued.
翻譯:讓我親自向你保證，你的意見非常受重視。
在對話中思考如何措辭時，"assure" 有時會與 "I mean"、"you know" 等填充語連用，使語氣更自然。 EN: I mean, I assure you, we're doing everything possible. 翻譯: 我的意思是，我向你保證，我們正在盡一切可能。
EN:You know, let me assure you, the situation is under control.
翻譯:你知道的，讓我向你保證，情況已在掌控之中。
正式書寫注意：在正式書面語（如報告、合約）中，應避免使用口語填充詞（如 "I mean", "you know"）與 "assure" 連用，以保持語言的嚴謹性。直接使用 "We assure you that..." 或 "This assures that..." 等結構更為得體。
assure someone of something
assure [person] of [noun/noun phrase]
向某人保證某事
assure someone that...
assure [person] that [clause]
向某人保證...
rest assured
(You can) rest assured that...
放心
assure quality
assure [noun] (e.g., quality, safety, success)
確保（品質、安全、成功等）
assure victory/success
assure [positive outcome]
確保勝利/成功
let me assure you
Let me assure you (that)...
讓我向你保證
assure a position/place
assure [a position/place/future]
確保（職位、位置、未來）
×I will ensure you that the package will arrive tomorrow.
✓I will assure you that the package will arrive tomorrow.
混淆 'assure' 和 'ensure'。'Assure' 是向某人保證（消除疑慮），後面通常接人（assure someone）。'Ensure' 是確保某事發生或某種情況，後面直接接事物（ensure something）。
×He assured that everything was under control.
✓He assured me/us/them that everything was under control.
'Assure' 是及物動詞，後面必須接一個表示人的受詞（assure someone），然後才是 'that' 子句。不能直接接 'that' 子句。
×She assured of her ability to handle the task.
✓She assured me of her ability to handle the task. / She assured me that she could handle the task.
使用 'assure someone of something' 結構時，不能省略 'someone'。或者可以改用 'assure someone that...' 的句型。
×You should assure your car against theft.
✓You should insure your car against theft.
混淆 'assure' 和 'insure'。'Assure' 意思是口頭保證、讓某人放心。'Insure' 專指為某物購買保險，以防財務損失。
×He assured me that the report is ready yesterday.
✓He assured me that the report was ready yesterday.
當主要動詞 'assured' 是過去式時，後面 'that' 子句中的動詞時態通常需要配合，使用過去式（如 was）或過去完成式，以保持時態一致性，除非所述的是普遍事實。
×I feel assure after talking to the expert.
✓I feel assured after talking to the expert.
想表達「感到放心」時，應該使用過去分詞 'assured' 作為形容詞，表示狀態（be/feel assured），而不是動詞原形 'assure'。'Assure' 是主動去保證的動作。