1. used to say that it is not possible to do something
用於表示不可能做某事
I can't lift this box; it's too heavy.
我搬不動這個箱子，它太重了。
She can't come to the party tonight.
她今晚不能來參加派對。
Can't Meaning（定義、用法、例句與發音）
can't
modal
快速理解
What does "Can't" mean?What are 2-3 core uses of "Can't"?
can't 是 cannot 的縮寫，主要表達「不能」或「不可能」的意思。
- 1
沒有能力
EN: I can't swim.
翻譯: 我不會游泳。
- 2
不被允許
EN: You can't park here.
翻譯: 你不能在這裡停車。
- 3
強烈推測（不可能）
EN: That can't be true!
翻譯: 那不可能是真的！
- 4
無法忍受或控制
EN: I can't stand the noise.
翻譯: 我無法忍受那個噪音。
小提醒：注意 can't 在否定推測時語氣比 must not 更強烈，表示「絕不可能」。
發音（How to Pronounce "Can't" in English）
How to pronounce "Can't" in English?"Can't" US vs UK pronunciation
點擊下方的 US / UK 按鈕可播放發音。
Real-life Examples of "Can't" from YouTube Videos
Steven Schwaitzberg: A universal translator for surgeons
TED
“We can't travel everywhere.”
(1 out of 579)
Definitions（定義）
What are the definitions of "Can't"?How does "Can't" change by context?
2. used to say that you are not allowed to do something
用於表示不被允許做某事
You can't park your car here.
你不能在這裡停車。
Students can't use their phones during the exam.
考試期間學生不能使用手機。
3. used to express disbelief or strong doubt
用於表示不相信或強烈懷疑
You can't be serious!
你不可能是認真的吧！
He can't have finished the project already.
他不可能已經完成這個專案了。
4. used to say that something is not logically possible or makes no sense
用於表示某事在邏輯上不可能或說不通
It can't be both raining and sunny at the same time.
不可能同時又下雨又出太陽。
The answer can't be zero; that doesn't make sense.
答案不可能是零，那說不通。
Grammar & Patterns（句型）
What are common sentence patterns for "Can't"?How to make natural sentences with "Can't"?
| Pattern | Meaning | Example |
|---|---|---|
| can't + V (base form) | 不能（表示能力不足） | I can't swim. (我不會游泳。) |
| can't + V (base form) | 不可以（表示禁止） | You can't park here. (你不可以在這裡停車。) |
| can't + be + V-ing | 不可能正在…（表示對正在發生的事的否定推測） | He can't be sleeping; it's noon. (他不可能在睡覺，現在是中午。) |
| can't + be + adjective/noun | 不可能是…（表示對狀態的否定推測） | That can't be true. (那不可能是真的。) |
| can't + have + past participle | 不可能已經…（表示對過去事件的否定推測） | She can't have finished the report already. (她不可能已經完成報告了。) |
| can't help + V-ing | 忍不住… | I can't help laughing. (我忍不住笑出來。) |
| can't stand + noun/V-ing | 無法忍受… | I can't stand loud noises. (我無法忍受巨大的噪音。) |
| can't wait + to + V | 等不及要… | I can't wait to see you. (我等不及要見你了。) |
用法說明
How is "Can't" different from similar structures?What usage mistakes are common with "Can't"?
can't help doing vs can't help but do
- can't help doing 強調一種自發的、難以控制的反應或情感，後面直接接動名詞 (V-ing)。
- can't help but do 是更正式的用法，強調「除了做某事之外別無選擇」，結構為
can't help but + 動詞原形。 - 在口語和非正式寫作中，兩者常可互換，但
can't help doing更為常見。 - 注意：不可說
can't help to do，這是常見的錯誤結構。 EN: I can't help laughing when I watch that comedy show. 翻譯: 我看那部喜劇節目時總是忍不住笑出來。
EN:Given the evidence, one can't help but conclude that he is right.
翻譯:根據證據，人們不得不得出他是對的結論。
總結建議
在大多數日常情境中，使用 can't help doing 來表達「忍不住做某事」即可，既自然又正確。
易混淆對比
What is the difference between "Can't" and similar words?How to choose "Can't" vs alternatives?
can't vs cannot
「can't」是「cannot」的縮寫形式，兩者意思完全相同，都表示「不能」或「不可能」。在正式書寫中，通常使用「cannot」；而在口語和非正式書寫中，「can't」更為常見。
can't vs mustn't
「can't」表示「沒有能力」或「客觀上不可能」；「mustn't」則表示「禁止」或「不允許」，是一種強烈的命令或規則。
can't vs may not
「can't」通常表示「不能」或「不可能」，強調能力或事實上的限制；「may not」則表示「不可以」或「可能不」，強調許可的否定或較弱的不確定性。
口語用法
How is "Can't" used in spoken English?What is the spoken vs formal difference for "Can't"?
引述
在口語中，常用來引述或模仿他人的話語，尤其是帶有情緒或抱怨的內容。 EN: She was like, "I can't even deal with this right now." 翻譯: 她當時就說：「我現在真的無法處理這件事。」
EN:He goes, "You can't be serious!"
翻譯:他就說：「你不可能是認真的吧！」
語氣強調
用來表達強烈的否定、驚訝或難以置信，語氣通常比書面語更強烈。 EN: I can't believe you did that! 翻譯: 我真不敢相信你竟然那樣做了！
EN:You can't just walk in here without knocking!
翻譯:你不能就這樣不敲門走進來啊！
停頓填充
在思考或組織語句時，作為一種口語填充詞，後面常接上完整的否定想法。 EN: It's just... I can't... explain how frustrating it was. 翻譯: 就是…我沒辦法…形容那有多令人沮喪。
EN:Well, I can't... oh, forget it.
翻譯:唉，我沒辦法…喔，算了。
注意：在正式書寫（如學術論文、商業報告）中，應避免使用縮寫形式 "can't"，須改為完整形式 "cannot" 或 "can not"。
常見短語
What common collocations use "Can't"?What fixed phrases with "Can't" should I remember?
can't help but
can't help but [verb]
忍不住、不由自主地
can't stand
can't stand [noun/gerund]
無法忍受、極度厭惡
can't wait
can't wait to [verb] / can't wait for [noun]
迫不及待、等不及
can't afford
can't afford [noun/to verb]
負擔不起（金錢、時間或後果）
can't be bothered
can't be bothered to [verb]
懶得、提不起勁去做
can't tell
can't tell [difference/clause]
無法分辨、看不出來
can't possibly
can't possibly [verb]
絕不可能、完全無法
常見錯誤
What are common mistakes with "Can't"?Which "Can't" sentences look correct but are wrong?
×I can't to swim.
✓I can't swim.
情態動詞 "can't" 後面直接接動詞原形，不加 "to"。
×He can't cooks.
✓He can't cook.
情態動詞 "can't" 後面的主要動詞必須使用原形，不能加 -s、-ed 或 -ing。
×I can't find nowhere to park.
✓I can't find anywhere to park.
在標準英語中，一個句子裡不應同時使用兩個否定詞（雙重否定）。"can't" 已經是否定，後面應使用 "anywhere" 而非 "nowhere"。
×Can't he speaks English?
✓Can't he speak English?
在疑問句中，情態動詞 "can't" 後面的主要動詞同樣必須使用原形。
×I'm not can go to the party.
✓I can't go to the party.
否定情態動詞 "can" 時，應直接在其後加 "not" 形成 "cannot" 或縮寫 "can't"，而不是在前面加 "am/is/are not"。
×This door can't be open.
✓This door can't be opened.
表達「無法被打開」時，應使用被動語態 "be opened"（過去分詞），而非形容詞 "open"。
詞形變化
What are the word forms of "Can't"?What are tense/participle forms of "Can't"?