1. to feel uncertain about something; to question if something is true or possible
對某事感到不確定；質疑某事是否真實或可能
I doubt that he will come on time.
我懷疑他會準時到。
She doubted the accuracy of the report.
她懷疑那份報告的準確性。
Doubt Meaning（定義、用法、例句與發音）
doubt
verb
快速理解
What does "Doubt" mean?What are 2-3 core uses of "Doubt"?
表示對某事不確定、不相信或認為其不太可能發生。
- 1
不確定、懷疑
EN: to feel uncertain about something or think it may not be true
翻譯: 對某事感到不確定或認為其可能不是真的
- 2
不相信、質疑
EN: to not believe or trust something
翻譯: 不相信或不信任某事
- 3
認為不可能
EN: to think that something is unlikely
翻譯: 認為某事不太可能發生
小提醒：注意 'doubt' 在肯定句和否定句中，後接 'that' 子句時，意思可能不同。在肯定句中常表示「懷疑、不確定」，而在 'I don't doubt that...' 的否定結構中，意思是「我相信...」。
發音（How to Pronounce "Doubt" in English）
How to pronounce "Doubt" in English?"Doubt" US vs UK pronunciation
點擊下方的 US / UK 按鈕可播放發音。
Real-life Examples of "Doubt" from YouTube Videos
Why are these 32 symbols found in caves all over Europe | Genevieve von Petzinger | TED
TED
“So back to the matter at hand. There could be no doubt that these signs were meaningful to their creators, like these 25,000-year-old bas-relief sculptures from La Roque de Venasque in France.”
(1 out of 46)
Definitions（定義）
What are the definitions of "Doubt"?How does "Doubt" change by context?
2. to consider something unlikely
認為某事不太可能
I doubt we'll have enough time to finish everything.
我懷疑我們沒有足夠時間完成所有事情。
He doubted they would win the game.
他認為他們不太可能贏得比賽。
3. to hesitate to believe or accept something
對相信或接受某事感到猶豫
You should never doubt your own abilities.
你永遠不應該懷疑自己的能力。
They began to doubt his loyalty.
他們開始懷疑他的忠誠度。
Grammar & Patterns（句型）
What are common sentence patterns for "Doubt"?How to make natural sentences with "Doubt"?
| Pattern | Meaning | Example |
|---|---|---|
| doubt + noun / noun phrase | 懷疑（某事物） | I doubt his story. (我懷疑他的說法。) |
| doubt + that clause | 懷疑（某事是否屬實） | She doubts that he will come. (她懷疑他是否會來。) |
| doubt + if / whether clause | 懷疑是否… | They doubt whether it's true. (他們懷疑那是否是真的。) |
| doubt + pronoun (e.g., it) | 對此表示懷疑 | He said he'd help, but I doubt it. (他說他會幫忙，但我對此表示懷疑。) |
| be + doubted (passive) | 被懷疑 | His loyalty was never doubted. (他的忠誠從未被懷疑過。) |
用法說明
How is "Doubt" different from similar structures?What usage mistakes are common with "Doubt"?
doubt that vs. doubt if/whether
- doubt that 通常用於表達較強烈的懷疑，認為某事不太可能或不是真的。
- doubt if/whether 則用於表達較不確定、帶有疑問的懷疑，相當於「不確定是否...」。
- 在否定句（如
I don't doubt...）或疑問句中，通常只用 that。 EN: I doubt that he will arrive on time. 翻譯: 我很懷疑他會準時到達。
EN:I doubt if/whether he knows the answer.
翻譯:我懷疑他是否知道答案。
總結建議
在表達強烈懷疑時使用 "doubt that"，而在表達不確定或疑問時則使用 "doubt if/whether"。
易混淆對比
What is the difference between "Doubt" and similar words?How to choose "Doubt" vs alternatives?
doubt vs question
「doubt」強調對真實性或可能性的不確定與懷疑；「question」則指提出問題或質疑，以求獲得答案或澄清。
doubt vs suspect
「doubt」表示不相信或認為某事不太可能；「suspect」則表示相信某事可能是真的，尤其指壞事。
doubt vs distrust
「doubt」針對特定陳述或事實的真實性；「distrust」則是對人或事物整體的普遍不信任感。
口語用法
How is "Doubt" used in spoken English?What is the spoken vs formal difference for "Doubt"?
引述
在口語中，常用 "I doubt it" 或 "I doubt that" 來簡潔地回應，表達對某事的懷疑或認為其不太可能發生。 EN: A: Do you think it will rain tomorrow? B: I doubt it. The sky is clear. 翻譯: A: 你覺得明天會下雨嗎？ B: 我懷疑（不太可能）。天空很晴朗。
EN:A: Is he coming to the party? B: I doubt that. He said he was busy.
翻譯:A: 他會來派對嗎？ B: 我對此表示懷疑。他說他很忙。
語氣強調
在對話中，可以透過重讀 "doubt" 或使用 "seriously doubt"、"highly doubt" 等片語來加強懷疑的語氣，使表達更強烈。 EN: I seriously doubt he finished the entire project in one day. 翻譯: 我嚴重懷疑他能在一天內完成整個專案。
EN:You think she'll agree? I highly doubt it.
翻譯:你覺得她會同意？我高度懷疑（極不可能）。
停頓填充
有時 "I doubt it" 會作為一種口語填充，在短暫思考或委婉否定時使用，語氣可能較為隨意或猶豫。 EN: Will we get a bonus this year? Hmm... I doubt it. 翻譯: 我們今年會有獎金嗎？嗯... 我表示懷疑（我覺得沒有）。
EN:Can we make it by 5 PM? Uh, I doubt it, traffic looks bad.
翻譯:我們能在下午五點前趕到嗎？呃，我懷疑（可能不行），交通看起來很糟。
正式寫作注意：在正式或學術寫作中，應避免使用 "I doubt it" 這類簡短口語回應。建議使用更完整、客觀的句式，例如 "It is unlikely that..." 或 "There is reason to doubt whether..."，並提供具體的懷疑依據。
常見短語
What common collocations use "Doubt"?What fixed phrases with "Doubt" should I remember?
doubt something
doubt + noun/pronoun
對某事表示懷疑或不相信
doubt that
doubt + (that) clause
懷疑（某事是否真實或會發生）
doubt if/whether
doubt + if/whether clause
不確定是否
never doubt
never doubt + noun/that clause
從不懷疑；堅信
seriously doubt
seriously doubt + noun/that clause
嚴重懷疑；極度不相信
begin to doubt
begin/start to doubt + noun/that clause
開始懷疑
doubt one's own eyes/ears
doubt + one's own + sense (eyes/ears/memory)
懷疑自己的所見所聞（或記憶）
常見錯誤
What are common mistakes with "Doubt"?Which "Doubt" sentences look correct but are wrong?
×I doubt that he will come.
✓I doubt he will come.
在口語和非正式書寫中，連接詞 'that' 經常被省略。雖然 'I doubt that he will come.' 在文法上並非錯誤，但省略 'that' 更為自然和常見。
×I doubt if he is telling the truth.
✓I doubt (that) he is telling the truth.
動詞 'doubt' 在肯定句中通常後接 'that' 子句（'that' 可省略），而不是 'if' 或 'whether'。'If' 或 'whether' 通常用於否定句或疑問句中，例如 'I don't doubt if/whether he is honest.'
×I am doubting his intentions.
✓I doubt his intentions.
'Doubt' 作為表示心理狀態的動詞，通常不使用進行式。應使用一般現在式來表達當下的懷疑。
×There is no doubt to his honesty.
✓There is no doubt about his honesty.
名詞 'doubt' 後接介系詞時，通常使用 'about' 或 'as to' 來引介懷疑的對象，而不是 'to'。
×I doubt he won't come.
✓I don't think he will come.
在英文中，避免在主要子句使用 'doubt'，並在從屬子句使用否定式，這會造成邏輯和語氣上的混亂。要表達「認為某人不會做某事」，應使用 'I don't think (that)...' 的結構。
×I very doubt it.
✓I very much doubt it. / I doubt it very much.
'Doubt' 不能直接用 'very' 修飾。要加強語氣，應使用 'very much'，並可置於 'doubt' 之前或句末。
詞形變化
What are the word forms of "Doubt"?What are tense/participle forms of "Doubt"?
doubts(3rd_singular)doubting(present_participle)doubted(past)doubted(past_participle)