1. in advance; earlier than a particular event or time
預先；事先
Please let me know beforehand if you can't attend the meeting.
如果你無法參加會議，請事先讓我知道。
We need to prepare the materials beforehand.
我們需要預先準備好材料。
Beforehand Meaning（定義、用法、例句與發音）
beforehand
adverb
快速理解
What does "Beforehand" mean?What are 2-3 core uses of "Beforehand"?
表示在特定時間或事件之前預先完成某事。
- 1
預先、事先
EN: in advance; ahead of time
翻譯: 提前；預先
- 2
提前準備
EN: to prepare or arrange something earlier
翻譯: 提前準備或安排
- 3
預知、預料
EN: to know or expect something before it happens
翻譯: 在事情發生前就知道或預料到
小提醒：注意「beforehand」是副詞，通常用來修飾動詞，描述動作發生的時間點，而非連接兩個事件。
發音（How to Pronounce "Beforehand" in English）
How to pronounce "Beforehand" in English?"Beforehand" US vs UK pronunciation
點擊下方的 US / UK 按鈕可播放發音。
Real-life Examples of "Beforehand" from YouTube Videos
Robin Chase: Excuse me, may I rent your car?
TED
“there's the here's all the stuff we do beforehand, and then the service launches. What happens?”
(1 out of 6)
Definitions（定義）
What are the definitions of "Beforehand"?How does "Beforehand" change by context?
2. already; before something else happens
已經；在…之前
I had already finished the report beforehand, so I wasn't worried.
我已經事先完成了報告，所以並不擔心。
She had studied the topic beforehand and was ready for the discussion.
她之前已經研究過這個主題，準備好參與討論了。
3. in anticipation; as a precaution
為防萬一；作為預防措施
He packed an extra battery beforehand, just in case.
為防萬一，他事先多打包了一顆電池。
It's wise to book tickets beforehand during the holiday season.
在假期期間，事先預訂票券是明智之舉。
Grammar & Patterns（句型）
What are common sentence patterns for "Beforehand"?How to make natural sentences with "Beforehand"?
| Pattern | Meaning | Example |
|---|---|---|
| beforehand | 預先；事先 | We need to prepare the documents beforehand. (我們需要預先準備好文件。) |
| well beforehand | 提早很多；遠在…之前 | Please book the tickets well beforehand to get a discount. (請提早很多訂票以獲得折扣。) |
| long beforehand | 很久以前 | He had decided to leave long beforehand. (他很久以前就決定要離開了。) |
| plan/arrange/know + beforehand | 預先計劃/安排/知道 | If I had known beforehand, I would have helped. (如果我事先知道，我就會幫忙了。) |
| do something + beforehand | 預先做某事 | You should check the weather forecast beforehand. (你應該事先查看天氣預報。) |
用法說明
How is "Beforehand" different from similar structures?What usage mistakes are common with "Beforehand"?
beforehand 與 before 的用法區別
- beforehand 是副詞，意為「預先、事先」，強調在主要事件發生之前的準備或行動。它通常單獨使用，或與動詞搭配，如
plan beforehand、prepare beforehand。 - before 則可作介系詞、連接詞或副詞，用法更廣。作介系詞時後接名詞（
before the meeting）；作連接詞時引導子句（before we start）。 - 關鍵區別在於：beforehand 不能直接接名詞或子句，它描述的是「提前」的狀態或方式。
對比範例： EN: You should inform us beforehand if you cannot attend. 翻譯: 如果你無法參加，應該事先通知我們。
EN:You should inform us before the deadline.
翻譯:你應該在截止日期前通知我們。
EN:We had prepared all the materials beforehand.
翻譯:我們預先準備好了所有材料。
EN:We had prepared all the materials before the guests arrived.
翻譯:我們在客人到達前準備好了所有材料。
總結建議
建議牢記 beforehand 是獨立的副詞，用於表示「提前做某事」，而 before 則需要接上其他成分（如名詞或子句）來指明時間點。
易混淆對比
What is the difference between "Beforehand" and similar words?How to choose "Beforehand" vs alternatives?
beforehand vs in advance
兩者都表示「提前」，但「beforehand」更口語化，常用於日常對話；「in advance」較正式，常用於商務或正式場合。
beforehand vs ahead of time
兩者皆可表示「提前」，但「ahead of time」強調在預定時間之前完成，常與具體時間點連用；「beforehand」則泛指「事先」。
beforehand vs previously
「beforehand」強調為未來事件做準備；「previously」則單純描述過去某個時間點之前發生的事，無「預先準備」之意。
口語用法
How is "Beforehand" used in spoken English?What is the spoken vs formal difference for "Beforehand"?
引述
在口語中，有時會用 "beforehand" 來引述或確認一個已經被提及或暗示的條件或準備。 EN: Just so you know, I did warn him beforehand. 翻譯: 先跟你說一聲，我事先警告過他了。
EN:If you'd told me beforehand, I could've helped.
翻譯:如果你事先告訴我，我就能幫忙了。
語氣強調
用來強調某個動作或決定是「提前」或「預先」完成的，帶有加強語氣的意味。 EN: I had it all planned out beforehand, so nothing went wrong. 翻譯: 我全都事先規劃好了，所以沒出任何差錯。
EN:You really should've thought about that beforehand.
翻譯:你真的應該事先就想到那一點的。
停頓填充
在思考下一句話時，偶爾會用 "beforehand" 作為短暫的停頓填充詞，連接前後思路。 EN: The meeting's at ten... beforehand, maybe we can grab a coffee. 翻譯: 會議是十點…在那之前，或許我們可以喝杯咖啡。
EN:I need to finish this report... and, well, beforehand, could you send me the data?
翻譯:我得完成這份報告…然後，嗯，在那之前，你能把數據傳給我嗎？
注意：在正式寫作中，應避免將 "beforehand" 用作停頓填充詞，以保持文體的簡潔與嚴謹。
常見短語
What common collocations use "Beforehand"?What fixed phrases with "Beforehand" should I remember?
plan beforehand
verb + beforehand
預先計劃
know beforehand
verb + beforehand
事先知道
arrange beforehand
verb + beforehand
預先安排
well beforehand
well + beforehand
遠遠提前
inform someone beforehand
verb + someone + beforehand
事先通知某人
prepare beforehand
verb + beforehand
預先準備
long beforehand
long + beforehand
很久以前
常見錯誤
What are common mistakes with "Beforehand"?Which "Beforehand" sentences look correct but are wrong?
×I knew it beforehandly.
✓I knew it beforehand.
"beforehand" 本身已是副詞，不需再加副詞字尾 "-ly"。
×I will tell you before.
✓I will tell you beforehand.
使用 "before" 時，通常需要明確指出時間點或事件（如 before the meeting）。當想表達「提前、事先」的抽象概念，而不特指某事件前時，應使用 "beforehand"。
×You need to pay beforehand of the service.
✓You need to pay for the service beforehand.
"beforehand" 是副詞，通常置於句尾或動詞後，不與介系詞 "of" 連用。正確用法是將 "beforehand" 放在主要動詞片語之後。
×I had a beforehand plan.
✓I had a plan beforehand. / I had made plans beforehand.
"beforehand" 主要用作副詞，修飾動詞，不應放在名詞前當形容詞使用。表達「事先的計劃」應使用副詞結構或改用 "advance"（如 "an advance plan"）。
×Beforehand we go, we need to check the map.
✓Before we go, we need to check the map.
"beforehand" 不能用作從屬連接詞來引導時間子句。引導子句時應使用 "before"。"beforehand" 用於表示動作發生在另一未明確提及的事件或時間點之前。
×She informed me at beforehand.
✓She informed me beforehand.
"beforehand" 是單一副詞，前面不需加介系詞 "at"、"in" 或 "on"。
詞形變化
What are the word forms of "Beforehand"?What are tense/participle forms of "Beforehand"?