Can Meaning(定義、用法、例句與發音)

can

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快速理解

What does "Can" mean?What are 2-3 core uses of "Can"?

「can」主要用作情態動詞,表達能力、許可或可能性。

  1. 1

    表達能力

    EN: to be able to do something

    翻譯: 表示有能力做某事。

  2. 2

    請求或給予許可

    EN: to ask for or give permission

    翻譯: 用於請求或給予做某事的許可。

  3. 3

    表示可能性

    EN: to indicate possibility

    翻譯: 表示某事是可能的。

  4. 4

    提出建議

    EN: to make a suggestion

    翻譯: 用於提出一個建議或提議。

小提醒:注意「can」表示能力時,與「be able to」在時態上的互補關係;「can」沒有未來式或完成式,需用「will be able to」或「have been able to」。

發音(How to Pronounce "Can" in English

How to pronounce "Can" in English?"Can" US vs UK pronunciation

點擊下方的 US / UK 按鈕可播放發音。

Real-life Examples of "Can" from YouTube Videos

South Korea would accept Trump-Kim deal to freeze North Korea’s nuclear programme | BBC News

BBC News

If this were presented as the final deal, it would be difficult to agree to, but as an emergency interim measure, Yes, I can agree to that.

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Definitions(定義)

What are the definitions of "Can"?How does "Can" change by context?

1. to be able to; to have the ability to

能夠;有能力做

She can speak three languages.

她能說三種語言。

Can you swim?

你會游泳嗎?

I can't lift this heavy box.

我抬不動這個重箱子。

2. to be allowed to; to have permission to

可以;被允許

You can go home now.

你現在可以回家了。

Can I use your phone?

我可以用你的電話嗎?

Students can borrow books from the library.

學生可以從圖書館借書。

3. used to make requests or offers

用於提出請求或提議

Can you help me with this?

你可以幫我這個忙嗎?

Can I get you something to drink?

要我幫你拿點喝的嗎?

Can you pass the salt, please?

請把鹽遞給我好嗎?

4. used to express possibility

用於表示可能性

It can get very cold here in winter.

這裡冬天有時會非常冷。

Anyone can make a mistake.

任何人都可能犯錯。

He can be quite stubborn sometimes.

他有時可能相當固執。

Grammar & Patterns(句型)

What are common sentence patterns for "Can"?How to make natural sentences with "Can"?
PatternMeaningExample
can + V (base form)表示能力、可能性或許可I can swim. (我會游泳。)
can't / cannot + V (base form)表示沒有能力、不可能或不許可She can't come to the party. (她不能來參加派對。)
Can + S + V...?用於詢問能力、可能性或許可Can you help me? (你能幫我嗎?)
can + be + adjective表示有時或可能呈現某種狀態He can be very stubborn. (他有時會非常固執。)
can't + be + adjective / noun表示對當前狀態或事實的強烈否定That can't be true! (那不可能是真的!)

用法說明

How is "Can" different from similar structures?What usage mistakes are common with "Can"?

can vs. could vs. be able to

  • can 表示現在的能力或可能性,而 could 常表示過去的一般能力或較禮貌、較不確定的現在請求。
  • could 用於假設語氣或虛擬情境,表示非真實或可能性較低的情況。
  • be able to 的用法更廣泛,可以明確表達在特定情況下「成功做到」某事(尤其是過去時態),或用於 can 無法使用的時態(如未來式、完成式)。

對比範例: EN: I can swim. 翻譯: 我會游泳。(現在能力)

EN:I could swim when I was five.

翻譯:我五歲時就會游泳。(過去的一般能力)

EN:She can't come to the phone right now.

翻譯:她現在沒辦法接電話。(現在的事實)

EN:She wouldn't be able to come even if you invited her.

翻譯:就算你邀請她,她也來不了。(假設情境)

總結建議

表達現在能力或許可時用 can;談論過去能力用 couldwas/were able to;在 can 無法構成的時態(如未來 will、現在完成 have)或強調「設法達成」時,使用 be able to

易混淆對比

What is the difference between "Can" and similar words?How to choose "Can" vs alternatives?

can vs could

can 表示現在的能力或可能性,could 表示過去的能力或較委婉的請求

can vs may

can 強調能力或事實上的可能性,may 強調許可或較正式的可能性

can vs be able to

can 用於一般能力,be able to 強調特定情況下的能力或未來/過去的能力

口語用法

How is "Can" used in spoken English?What is the spoken vs formal difference for "Can"?

引述

在轉述他人話語或想法時,口語中常用 "can" 來保持原話的語氣。 EN: She was like, "I can totally help you with that." 翻譯: 她當時就說:「我完全可以幫你處理那個。」

EN:He goes, "Can we talk about this later?"

翻譯:他就說:「我們可以晚點再談這個嗎?」

語氣強調

在非正式對話中,會透過重音或拉長音來強調 "can" 或 "can't",以表達強烈的情緒(如驚訝、不耐煩)。 EN: I CAN'T believe you did that! 翻譯: 我真是無法相信你竟然那樣做了!

EN:You CAN come if you want, but it's up to you.

翻譯:你「可以」來啊,如果你想的話,但隨你便。

停頓填充

在思考或組織句子時,有時會將 "can" 作為一個短暫的停頓詞,尤其是在問句開頭。 EN: Can... um, can you pass me the salt? 翻譯: 可以…呃,你可以把鹽遞給我嗎?

EN:So, can—actually, never mind, I'll do it myself.

翻譯:所以,可以——算了,沒關係,我自己來吧。

正式書寫注意:上述口語用法(特別是「停頓填充」和模仿對話的「引述」)僅限於非正式對話或創意寫作中。在學術論文、商業報告或正式信件中,應避免使用,以保持語言的嚴謹與清晰。

常見短語

What common collocations use "Can"?What fixed phrases with "Can" should I remember?

can you

can you [verb]

用於提出請求或詢問能力

can I

can I [verb]

用於請求許可或詢問可能性

can do

[subject] can do [something]

表示有能力或可能做某事

cannot / can't

cannot/can't [verb]

表示沒有能力、不允許或不可能

as ... as can be

as [adjective] as can be

用於強調某種特質達到極致

can but

can but [verb]

表示只能做某事(較正式或文學用法)

can always

can always [verb]

表示總是有某個選項或可能性

常見錯誤

What are common mistakes with "Can"?Which "Can" sentences look correct but are wrong?

×I can to speak English.

I can speak English.

情態動詞 'can' 後面直接接原形動詞,不加 'to'。'be able to' 才需要 'to'。

×I will can go tomorrow.

I will be able to go tomorrow.

'can' 沒有未來式形式。表達未來的能力或可能性時,應使用 'will be able to'。

×Can I borrow your pen? (在非常正式的場合)

May I borrow your pen?

雖然 'can' 在口語中常用來請求許可,但在正式場合或強調禮貌時,使用 'may' 更為得體。

×It can rain tomorrow. (表示單純的天氣預測)

It might/could rain tomorrow.

'can' 表示理論上的可能性或能力,不用於預測特定事件。預測或推測某事可能發生時,應使用 'might', 'could' 或 'may'。

×I can not swim.

I cannot swim. / I can't swim.

標準寫法中,'can' 的否定形式是 'cannot' (一個字) 或縮寫 'can't'。'can not' (兩個字) 在現代英語中較不常見,通常用於強調 'not' 時。

×I have can swim since I was five.

I have been able to swim since I was five.

'can' 沒有完成式。要表達從過去持續到現在的能力,必須使用 'have/has been able to'。

詞形變化

What are the word forms of "Can"?What are tense/participle forms of "Can"?
could(past)