1. happening quickly and unexpectedly
突然地，意外地
The car stopped suddenly in the middle of the road.
那輛車突然在路中間停了下來。
He suddenly remembered he had left the oven on.
他突然想起自己忘了關烤箱。
Suddenly Meaning（定義、用法、例句與發音）
suddenly
adverb
快速理解
What does "Suddenly" mean?What are 2-3 core uses of "Suddenly"?
suddenly 表示事情發生得很快且出乎意料。
- 1
出乎意料地
EN: in an unexpected way
翻譯: 以一種出乎意料的方式
- 2
迅速地
EN: quickly and without warning
翻譯: 迅速且毫無預警地
- 3
急遽地
EN: in a sharp or abrupt manner
翻譯: 以一種急遽或突然的方式
小提醒：suddenly 強調的是「突然性」與「意外性」，通常用來描述瞬間的變化或事件，而非緩慢漸進的過程。
發音（How to Pronounce "Suddenly" in English）
How to pronounce "Suddenly" in English?"Suddenly" US vs UK pronunciation
點擊下方的 US / UK 按鈕可播放發音。
Real-life Examples of "Suddenly" from YouTube Videos
Why Should I Start a Startup? by Michael Seibel
Y Combinator
“so suddenly they're like not the experts anymore, something. the kid who's like one year ahead of you really just doesn't actually know anything more than you do.”
(1 out of 101)
Definitions（定義）
What are the definitions of "Suddenly"?How does "Suddenly" change by context?
2. used to indicate a sharp change in a situation or someone's feelings
用於表示情況或某人感受的急劇變化
Suddenly, everyone in the room fell silent.
突然間，房間裡的每個人都安靜了下來。
I suddenly felt very tired after the long meeting.
漫長的會議後，我突然感到非常疲倦。
3. in a way that is surprising or not easy to predict
以令人驚訝或難以預料的方式
The weather changed suddenly from sunny to stormy.
天氣突然從晴朗轉為暴風雨。
She suddenly decided to quit her job and travel the world.
她突然決定辭職去環遊世界。
Grammar & Patterns（句型）
What are common sentence patterns for "Suddenly"?How to make natural sentences with "Suddenly"?
| Pattern | Meaning | Example |
|---|---|---|
| suddenly + verb | 突然地（做某事） | The lights suddenly went out. (燈突然熄滅了。) |
| suddenly + adjective | 突然變得… | He suddenly became very quiet. (他突然變得很安靜。) |
| verb + suddenly | （某事）突然發生 | Everything changed suddenly. (一切突然改變了。) |
| when/before/after + clause, + suddenly + clause | 當/在…之前/之後，突然… | I was reading when suddenly the phone rang. (我正在看書，電話突然響了。) |
| all of a sudden | 突然間（同義片語） | All of a sudden, she started to cry. (突然間，她開始哭了起來。) |
用法說明
How is "Suddenly" different from similar structures?What usage mistakes are common with "Suddenly"?
suddenly doing vs suddenly to do
- suddenly doing 通常用於描述一個突然開始並持續進行的動作或狀態，強調動作的即時性和當下性。
- suddenly to do 在標準英語中幾乎不使用，是不正確的結構。正確的用法是 suddenly + 動詞原形 來描述一個突然發生的單一事件。
- 在情態動詞或助動詞（如 would, might, could）後，結構為 would suddenly + 動詞原形，而非 "would suddenly to + V"。 EN: He suddenly started laughing in the middle of the meeting. 翻譯: 他在會議中途突然笑了起來。
EN:He would suddenly appear at my door without calling.
翻譯:他過去總是不打電話就突然出現在我家門口。
總結建議
使用 "suddenly + 動詞原形" 來描述突然發生的動作，避免使用 "suddenly to do" 或 "would suddenly to + V" 這類不正確的結構。
易混淆對比
What is the difference between "Suddenly" and similar words?How to choose "Suddenly" vs alternatives?
suddenly vs immediately
「suddenly」強調事件發生得突然、出乎意料；「immediately」則強調時間上緊接、沒有延遲。
suddenly vs abruptly
「suddenly」是通用詞，描述事件發生得突然；「abruptly」語氣更強，常帶有粗魯、唐突或令人不快的終止感。
suddenly vs all of a sudden
「suddenly」是標準副詞；「all of a sudden」是口語化的片語，兩者意思幾乎相同，但後者更生動、戲劇化。
口語用法
How is "Suddenly" used in spoken English?What is the spoken vs formal difference for "Suddenly"?
引述
用於引述或重現某個事件發生的瞬間，常與「I was...」、「he said...」等結構連用。 EN: I was reading a book when suddenly, the power went out. 翻譯: 我正在看書，突然間，停電了。
EN:She was about to leave when suddenly, she remembered her keys.
翻譯:她正要離開，突然間，她想起了她的鑰匙。
語氣強調
放在句首或句中，用來戲劇性地強調事件的意外性與轉折，引起聽者注意。 EN: Suddenly, everything made sense. 翻譯: 突然間，一切都說得通了。
EN:The mood in the room changed suddenly.
翻譯:房間裡的氣氛突然改變了。
停頓填充
在即時敘述中，用作短暫的思考停頓，為接下來的意外發展做鋪墊。 EN: We were walking, and suddenly... we saw a deer. 翻譯: 我們走著走著，突然……我們看到一隻鹿。
EN:The conversation was normal, then suddenly—he just started crying.
翻譯:對話本來很正常，然後突然——他就哭了起來。
正式寫作注意：在學術或正式書面語中，建議使用「abruptly」、「unexpectedly」等詞彙，或重組句子結構來表達突然性，以減少「suddenly」帶來的口語化與戲劇化效果。
常見短語
What common collocations use "Suddenly"?What fixed phrases with "Suddenly" should I remember?
suddenly realize
suddenly + verb
突然意識到
all of a sudden
idiom (synonymous with suddenly)
突然間
suddenly appear
suddenly + verb
突然出現
suddenly stop
suddenly + verb
突然停止
suddenly remember
suddenly + verb
突然想起
suddenly change
suddenly + verb
突然改變
quite suddenly
adverb + suddenly
相當突然地
常見錯誤
What are common mistakes with "Suddenly"?Which "Suddenly" sentences look correct but are wrong?
×He gave a suddenly shout.
✓He gave a sudden shout.
"Suddenly" 是副詞，用來修飾動詞、形容詞或其他副詞，表示動作或狀態的突然性。"Sudden" 是形容詞，用來修飾名詞。這裡 "shout" 是名詞，所以應該用形容詞 "sudden" 來修飾。
×Suddenly he, without warning, left the room.
✓He suddenly left the room without warning.
副詞 "suddenly" 的位置通常放在主要動詞之前（或助動詞與主要動詞之間），或句首以強調突然性。將 "suddenly" 放在主詞和插入語之間會使句子結構斷裂，顯得不自然。
×He stood up suddenly immediately.
✓He stood up suddenly.
"Suddenly" 本身就包含了「立即、瞬間發生」的意思，與 "immediately" 或 "at once" 等詞一起使用會造成語意重複。應選擇其中一個即可。
×I was suddenly understanding the problem.
✓I suddenly understood the problem.
"Suddenly" 通常描述一個瞬間完成的動作或狀態變化，因此常與簡單過去式連用，而不是描述持續進行的過去進行式。表示「瞬間領悟」應用瞬間動詞的簡單過去式。
×Suddenly a loud crash echoed through the house.
✓Suddenly, a loud crash echoed through the house.
當 "suddenly" 置於句首，用來修飾整個句子時，後面通常需要加逗號，以表示停頓並強調其突然性。這是英文寫作中常見的標點習慣。
×I woke up. Suddenly I got out of bed. Suddenly I brushed my teeth. Suddenly I had breakfast.
✓I woke up. Then I got out of bed, brushed my teeth, and had breakfast. Suddenly, I heard a strange noise.
"Suddenly" 應保留用於描述真正出乎意料、中斷原本進程的單一事件。在連續的日常動作中重複使用會削弱其衝擊力，並使敘述顯得笨拙。應僅在事件真正突然發生時使用。
詞形變化
What are the word forms of "Suddenly"?What are tense/participle forms of "Suddenly"?