1. likely to cause harm or injury
可能造成傷害或損傷的
The chemicals are dangerous if not handled properly.
這些化學品如果處理不當是很危險的。
It's dangerous to walk alone in that area at night.
晚上獨自在那個區域行走很危險。
Dangerous Meaning（定義、用法、例句與發音）
dangerous
adjective
快速理解
What does "Dangerous" mean?What are 2-3 core uses of "Dangerous"?
形容可能造成傷害、危害或不安全的人、事物或情況。
- 1
造成傷害的
EN: likely to cause harm or injury
翻譯: 很可能造成傷害或損傷的
- 2
有風險的
EN: involving risk or peril; not safe
翻譯: 涉及風險或危險的；不安全的
- 3
具威脅性的
EN: able or likely to cause problems or damage
翻譯: 能夠或可能引發問題或損害的
- 4
不穩定的
EN: likely to become unstable or violent
翻譯: 很可能變得不穩定或具有暴力傾向的
小提醒：注意：'dangerous' 描述的是事物本身的『危險屬性』，而非主觀感受。例如，'I feel dangerous.' 是錯誤的（這聽起來像是你本人對他人構成威脅）。正確表達感到自身處境危險應說 'I feel in danger.' 或 'I feel unsafe.'。
發音（How to Pronounce "Dangerous" in English）
How to pronounce "Dangerous" in English?"Dangerous" US vs UK pronunciation
點擊下方的 US / UK 按鈕可播放發音。
Real-life Examples of "Dangerous" from YouTube Videos
Steven Schwaitzberg: A universal translator for surgeons
TED
“Now, this type of surgery is hard and it starts by putting people to sleep, putting carbon dioxide in their abdomen, blowing them up like a balloon, sticking one of these sharp, pointy things into their abdomen -- it's dangerous stuff -- and taking instruments and watching it on a TV screen.”
(1 out of 96)
Definitions（定義）
What are the definitions of "Dangerous"?How does "Dangerous" change by context?
2. involving or likely to involve risk or peril
涉及或可能涉及風險或危險的
He enjoys dangerous sports like rock climbing.
他喜歡像攀岩這類危險的運動。
The mission was considered too dangerous for a single agent.
這次任務被認為對單一特工來說過於危險。
3. able or likely to cause problems or have adverse effects
能夠或可能引發問題或產生不良影響的
His radical ideas are dangerous to the established order.
他的激進思想對現有秩序是危險的。
Spreading misinformation online is a dangerous practice.
在網路上散播錯誤資訊是一種危險的行為。
4. having a threatening or menacing quality
具有威脅性或恐嚇性質的
The suspect was described as armed and dangerous.
這名嫌犯被描述為持有武器且具有危險性。
The dog gave a dangerous growl.
那隻狗發出了危險的低吼聲。
Grammar & Patterns（句型）
What are common sentence patterns for "Dangerous"?How to make natural sentences with "Dangerous"?
| Pattern | Meaning | Example |
|---|---|---|
| dangerous + noun | 危險的… | The river has dangerous currents. (這條河流有危險的暗流。) |
| dangerous + to + verb | 對…是危險的 | It is dangerous to walk alone at night. (夜晚獨自步行是危險的。) |
| dangerous + for + noun/pronoun | 對…來說是危險的 | This chemical is dangerous for children. (這種化學物質對兒童是危險的。) |
| It is dangerous + that-clause | …是危險的 | It is dangerous that the bridge is not repaired. (那座橋沒有修復是很危險的。) |
| dangerous + enough | 足夠危險 | The situation became dangerous enough to require evacuation. (情況變得足夠危險，需要疏散。) |
| potentially/very/extremely + dangerous | 潛在的/非常/極度危險 | The virus is potentially dangerous. (這種病毒具有潛在危險性。) |
| consider/regard + noun + as dangerous | 認為…是危險的 | The government considers the group as dangerous. (政府認為該團體是危險的。) |
| look/sound/seem + dangerous | 看起來/聽起來/似乎很危險 | That old staircase looks dangerous. (那個舊樓梯看起來很危險。) |
用法說明
How is "Dangerous" different from similar structures?What usage mistakes are common with "Dangerous"?
dangerous doing vs dangerous to do
- dangerous doing 強調某個「活動或行為本身」是危險的，通常用於描述一個概括性的情況。
- dangerous to do 強調「去做某事的動作」是危險的，常與特定情境或假設條件連用。
- 在 It is dangerous to... 的句型中，只能用 to do 形式。
- 在 would be dangerous to... 這類虛擬語氣或假設語氣中，也必須使用 to do 形式。 EN: Rock climbing is dangerous doing without proper training. 翻譯: 沒有適當訓練，攀岩本身就是危險的活動。
EN:It would be dangerous to climb that old ladder.
翻譯:爬那個舊梯子會很危險。
總結建議
一般情況下兩者可以互換，但強調抽象行為時用 dangerous doing，強調具體動作或使用 It is/would be... 句型時則用 dangerous to do。
易混淆對比
What is the difference between "Dangerous" and similar words?How to choose "Dangerous" vs alternatives?
dangerous vs risky
dangerous 強調可能造成嚴重傷害或死亡的客觀危險性；risky 則側重於結果不確定、可能失敗或損失的主觀風險評估。
dangerous vs hazardous
dangerous 是通用詞，指可能造成傷害的危險；hazardous 是正式或技術用語，常指化學品、廢棄物或工作環境等特定領域的潛在危害。
dangerous vs perilous
dangerous 是日常用語；perilous 是文學或正式用詞，強調極度危險、生死攸關的處境。
口語用法
How is "Dangerous" used in spoken English?What is the spoken vs formal difference for "Dangerous"?
引述
在轉述他人警告或描述潛在風險時，常用來引述一個說法或觀點。 EN: She said the path up the mountain was dangerous after the rain. 翻譯: 她說下雨後上山的路很危險。
EN:Everyone keeps telling me that neighborhood is dangerous at night.
翻譯:大家一直跟我說那個社區晚上很危險。
語氣強調
在口語中，常透過重音、拉長音或搭配副詞來強調危險的程度或即時性。 EN: That is seriously dangerous—don't even think about trying it. 翻譯: 那真的超級危險——想都別想嘗試。
EN:It's getting dangerous out here, we should go.
翻譯:這裡情況越來越危險了，我們該走了。
停頓填充
在思考如何描述一個有風險的狀況時，可能會用這個詞作為停頓的一部分，引出後續解釋。 EN: The whole situation was just... dangerous, you know? Like anything could go wrong. 翻譯: 整個情況就是…很危險，你懂嗎？好像隨時都可能出錯。
EN:It's a bit dangerous, I mean, if you're not careful you could get hurt.
翻譯:這有點危險，我是說，如果不小心可能會受傷。
正式寫作注意：在學術或正式報告中，應避免使用過於口語的強調方式（如「超級危險」），並改用更精確的詞彙描述風險的性質與程度，例如「具有高度風險的」(high-risk)、「可能造成危害的」(potentially hazardous) 或「不穩定的」(unstable)。
常見短語
What common collocations use "Dangerous"?What fixed phrases with "Dangerous" should I remember?
dangerous situation
adjective + noun
危險的處境
dangerous to
adjective + to-infinitive
對...是危險的
dangerous for
adjective + for + noun/pronoun
對...來說是危險的
highly dangerous
adverb + adjective
極度危險的
potentially dangerous
adverb + adjective
潛在危險的
dangerous game
adjective + noun
危險的遊戲/賭注
dangerous driving
adjective + noun
危險駕駛
dangerous criminal
adjective + noun
危險罪犯
常見錯誤
What are common mistakes with "Dangerous"?Which "Dangerous" sentences look correct but are wrong?
×It is dangerous to drive when you are tire.
✓It is dangerous to drive when you are tired.
The adjective 'tired' (疲累的) is needed to describe the state of the person. 'Tire' is a verb (使疲倦) or noun (輪胎).
×This chemical is very danger.
✓This chemical is very dangerous.
'Danger' is a noun (危險). The adjective form is 'dangerous' (危險的). Use the adjective to describe a noun.
×He is in a dangerous situation.
✓He is in a dangerous situation.
The spelling 'dangerous' has a 'u' after the 'g'. A common misspelling omits this vowel.
×It's dangerous for your health.
✓It's dangerous to your health. / It's dangerous for your health.
Both 'dangerous to' and 'dangerous for' are often acceptable, but there is a subtle difference. 'Dangerous to' often indicates a direct threat to an object/person. 'Dangerous for' often indicates a risky situation for someone. 'Smoking is dangerous to your health' (direct threat) is more common than 'for' in this fixed phrase.
×The driver drove dangerous.
✓The driver drove dangerously.
'Dangerous' is an adjective and describes nouns (a dangerous driver). To describe a verb (drove *how*?), you must use the adverb 'dangerously' (危險地).
×It is more dangerouser to go alone.
✓It is more dangerous to go alone.
For most adjectives with two or more syllables (like dangerous), the comparative is formed with 'more', not by adding '-er'. Do not use both 'more' and '-er' together.
詞形變化
What are the word forms of "Dangerous"?What are tense/participle forms of "Dangerous"?