1. extra; more than what already exists or is already available
額外的；附加的；在已有基礎上增加的
We need additional information before we can make a decision.
我們需要更多資訊才能做出決定。
There will be an additional charge for delivery.
運送將收取額外費用。
Additional Meaning（定義、用法、例句與發音）
additional
adjective
快速理解
What does "Additional" mean?What are 2-3 core uses of "Additional"?
表示在原有基礎上增加或補充的。
- 1
額外的
EN: extra or more than what already exists
翻譯: 指在現有數量或範圍之外，再增加的。
- 2
補充的
EN: supplementary; added to complete or enhance
翻譯: 為了使事物更完整或更好而添加的。
- 3
附加的
EN: attached or included as an extra part
翻譯: 作為額外部件或項目附加上去的。
小提醒：注意 'additional' 通常用於修飾不可數名詞或複數名詞，表示在原有基礎上的『增量』，而非全新的不同事物。
發音（How to Pronounce "Additional" in English）
How to pronounce "Additional" in English?"Additional" US vs UK pronunciation
點擊下方的 US / UK 按鈕可播放發音。
Real-life Examples of "Additional" from YouTube Videos
South Korea would accept Trump-Kim deal to freeze North Korea’s nuclear programme | BBC News
BBC News
“He said Pyongyang was now producing an additional 15 to 20 nuclear weapons a year.”
(1 out of 19)
Definitions（定義）
What are the definitions of "Additional"?How does "Additional" change by context?
2. added to something else to improve or complete it
補充的；用以完善或補足的
The report includes additional comments from the experts.
這份報告包含了專家們的補充意見。
She took additional courses to improve her skills.
她選修了額外的課程來提升技能。
3. beyond the usual or expected amount or number
超出通常或預期數量的
The project required additional manpower to meet the deadline.
這個專案需要額外的人力才能在期限內完成。
Due to high demand, the store ordered additional stock.
由於需求旺盛，商店訂購了額外的庫存。
Grammar & Patterns（句型）
What are common sentence patterns for "Additional"?How to make natural sentences with "Additional"?
| Pattern | Meaning | Example |
|---|---|---|
| additional + noun | 額外的…；附加的… | We need additional information to process your request. (我們需要額外的資訊來處理您的申請。) |
| additional + to + noun | 在…之外附加的 | There is a service charge additional to the bill. (帳單之外還有一筆附加的服務費。) |
| additional + that-clause | 額外說明… | The report provided the additional detail that the project was delayed. (報告提供了額外的細節，說明該項目被延遲了。) |
用法說明
How is "Additional" different from similar structures?What usage mistakes are common with "Additional"?
additional + noun vs. additional to + verb
- additional + noun 是最常見的用法，表示「額外的、附加的」某個事物，後面直接接名詞。
- additional to + verb 的結構並不標準。若要表達「除了...之外，還...」，應使用 in addition to + V-ing / noun。
- 若要表達「為了...而額外增加」，可使用 additional for + noun / V-ing。
- 在正式或商業書信中，additional 常與具體名詞連用，如
additional information、additional cost、additional requirements。 EN: Please provide any additional information you may have. 翻譯: 請提供您可能擁有的任何額外資訊。
EN:In addition to the main report, we need a summary.
翻譯:除了主要報告，我們還需要一份摘要。
總結建議
建議使用「additional + 名詞」來表示額外的事物，並使用「in addition to」來引介附加的動作或項目。
易混淆對比
What is the difference between "Additional" and similar words?How to choose "Additional" vs alternatives?
additional vs extra
「additional」強調「額外增加」的性質，較正式；「extra」強調「超出標準」的額外部分，較口語。
additional vs supplementary
「additional」泛指任何額外增加的事物；「supplementary」特指為補充不足或完善而增加的輔助性內容。
additional vs further
「additional」側重於數量或項目的增加；「further」側重於程度、範圍或時間的延伸。
口語用法
How is "Additional" used in spoken English?What is the spoken vs formal difference for "Additional"?
引述
在口語中，有時會用 "additional" 來引述或補充他人剛提到的資訊，帶有「另外還有的…」的語氣。 EN: So, the main cost is covered. Any additional expenses? 翻譯: 所以主要費用已經涵蓋了。還有任何額外的開銷嗎？
EN:He mentioned the deadline. Were there any additional instructions?
翻譯:他提到了截止日期。還有任何額外的指示嗎？
語氣強調
當想強調某事物是「額外多出來的」、「超出預期或基礎的」時，會加重 "additional" 的語氣。 EN: That will require additional effort on your part. 翻譯: 那將需要你付出額外的努力。
EN:We had to pay an additional fee at the door.
翻譯:我們不得不在門口支付一筆額外的費用。
停頓填充
在思考或組織句子時，"additional" 有時會被用作一個較正式的填充詞，來爭取一點時間。 EN: We need to consider... additional... factors like the weather. 翻譯: 我們需要考慮…額外的…像是天氣這類因素。
EN:The plan looks good, but for additional... let's say, safety, we should have a backup.
翻譯:計畫看起來不錯，但為了額外的…比方說，安全性，我們應該要有備案。
正式書寫提醒：在正式寫作（如報告、論文）中，應避免將 "additional" 用作停頓填充詞。建議直接、明確地列出要補充的項目，以保持文章的流暢與嚴謹。
常見短語
What common collocations use "Additional"?What fixed phrases with "Additional" should I remember?
additional cost
additional + noun
額外費用
additional information
additional + noun
額外資訊
additional time
additional + noun
額外時間
additional support
additional + noun
額外支援
additional resources
additional + noun
額外資源
additional benefit
additional + noun
額外好處
additional charge
additional + noun
額外收費
additional requirement
additional + noun
額外要求
常見錯誤
What are common mistakes with "Additional"?Which "Additional" sentences look correct but are wrong?
×addtional
✓additional
拼寫錯誤。正確拼法為 'additional'，只有一個 'd'，但有兩個 't'。
×additional of something
✓additional something
多餘的介系詞。'Additional' 是形容詞，直接修飾名詞，不需要 'of'。
×more additional
✓additional / more
語意重複。'Additional' 本身已含有「更多、額外」的意思，與 'more' 連用顯得多餘。應擇一使用。
×In addition information, we need your address.
✓In addition to the information, we need your address. / We need additional information, including your address.
混淆詞性。'In addition' 是片語，後面需接 'to + 名詞'。若要直接修飾名詞，應使用形容詞 'additional'。
×We have an additional.
✓We have an additional item / something additional.
錯誤的詞性使用。'Additional' 是形容詞，不能單獨作為名詞使用。它必須修飾一個名詞，或用在 'something additional' 這樣的結構中。
×additional extra
✓additional / extra
語意重複。'Additional' 和 'extra' 意思非常接近，同時使用顯得多餘。應擇一使用。
詞形變化
What are the word forms of "Additional"?What are tense/participle forms of "Additional"?