1. the process of adding numbers together
將數字相加的過程
The children are learning addition and subtraction.
孩子們正在學習加法和減法。
I made a mistake in the addition of these figures.
我在這些數字的加法計算中出錯了。
Addition Meaning（定義、用法、例句與發音）
addition
noun
快速理解
What does "Addition" mean?What are 2-3 core uses of "Addition"?
「addition」主要指增加的行為或結果，也用於數學加法與建築擴建。
- 1
增加的行為或事物
EN: The act or process of adding something, or the thing that is added.
翻譯: 指添加某物的行為或過程，或是被添加的事物本身。
- 2
數學運算
EN: The mathematical operation of calculating the sum of numbers.
翻譯: 指計算數字總和的數學運算，即加法。
- 3
建築擴建部分
EN: A part added to a building or structure.
翻譯: 指建築物或結構上增建的部分。
小提醒：注意「in addition」是常用片語，意思是「此外」，用來補充資訊，與單純的「addition」意思不同。
發音（How to Pronounce "Addition" in English）
How to pronounce "Addition" in English?"Addition" US vs UK pronunciation
點擊下方的 US / UK 按鈕可播放發音。
Real-life Examples of "Addition" from YouTube Videos
Boghuma Kabisen Titanji: Ethical riddles in HIV research
TED
“In addition, they should be able to consider the possibility of introducing and maintaining effective treatments in the wider community once the trial ends.”
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Definitions（定義）
What are the definitions of "Addition"?How does "Addition" change by context?
2. a person or thing that is added to something else
被添加到其他事物中的人或物
The new teacher is a welcome addition to our school.
這位新老師是我們學校備受歡迎的新成員。
This room is a recent addition to the house.
這個房間是這棟房子最近新增的部分。
3. the act of adding something to something else
將某物添加到另一物的行為
The addition of salt improved the flavor of the soup.
鹽的添加改善了湯的風味。
The addition of a new wing will double the hospital's capacity.
新增一個側翼將使醫院的容量增加一倍。
4. used to introduce an extra fact or point
用於引述額外的事實或觀點
In addition to his salary, he receives a bonus every year.
除了薪水之外，他每年還會收到一筆獎金。
She speaks French and, in addition, she knows some Italian.
她會說法語，此外，她還懂一些義大利語。
Grammar & Patterns（句型）
What are common sentence patterns for "Addition"?How to make natural sentences with "Addition"?
| Pattern | Meaning | Example |
|---|---|---|
| addition + of + noun | ...的添加 | The addition of new features improved the software. (新功能的添加改善了軟體。) |
| addition + to + noun | 對...的增添 | This room is a new addition to the house. (這個房間是對這棟房子的新增部分。) |
| in addition | 此外 | He is a talented musician. In addition, he is a great teacher. (他是位有才華的音樂家。此外，他也是位很棒的老師。) |
| in addition to + noun/gerund | 除了...之外 | In addition to his main job, he volunteers at a shelter. (除了他的正職工作之外，他還在收容所當志工。) |
用法說明
How is "Addition" different from similar structures?What usage mistakes are common with "Addition"?
addition of vs addition to
- addition of + (名詞) 強調「加入的具體事物或人」。
- addition to + (名詞) 強調「被加入的整體或對象」。
- 在數學或正式語境中，addition of 也常指「加法運算」本身。
- 當表示「對...的補充」時，通常使用 addition to。 EN: The addition of a new wing will expand the hospital's capacity. 翻譯: 新增一個側翼將擴大醫院的容量。
EN:The new wing is a valuable addition to the hospital.
翻譯:這個新側翼是對醫院極有價值的增建部分。
EN:We learned the addition of fractions in math class.
翻譯:我們在數學課上學了分數的加法。
EN:This book is a great addition to my collection.
翻譯:這本書是我收藏的一個絕佳補充。
總結建議
一般來說，指「加入的物/人」用 addition of，指「對整體的補充」則用 addition to。
易混淆對比
What is the difference between "Addition" and similar words?How to choose "Addition" vs alternatives?
addition vs plus
「addition」是數學運算「加法」的名稱或指「增加物」；「plus」是表示加法運算的符號或連接詞，意為「加上」。
addition vs supplement
「addition」泛指任何增加的人或物；「supplement」特指為了使原物更完整或更好而增加的補充物。
addition vs increase
「addition」通常指新增一個可數的實體或部分；「increase」主要指數量、程度、規模上的增長。
口語用法
How is "Addition" used in spoken English?What is the spoken vs formal difference for "Addition"?
引述
在對話中，當引述或轉述他人剛提到的補充事項時，常會使用。 EN: So, in addition to the budget, she also mentioned the timeline. 翻譯: 所以，除了預算之外，她還提到了時間表。
EN:And in addition, he said we need to consider the weather.
翻譯:而且他還說，我們需要考慮天氣因素。
語氣強調
用於列舉時，強調還有更多項目或理由要補充，常與「and」連用。 EN: We need pens, paper, and, in addition, some markers. 翻譯: 我們需要筆、紙，而且還需要一些麥克筆。
EN:The food was great, the service was excellent, and in addition, the view was stunning.
翻譯:食物很棒，服務一流，而且景色還美得令人驚嘆。
停頓填充
作為說話時的思考緩衝，連接前後想法，使表達更流暢。 EN: The project is going well... in addition, we might finish early. 翻譯: 專案進行得很順利…此外，我們或許能提前完成。
EN:I think we should go. In addition, it wouldn't hurt to be early.
翻譯:我覺得我們該出發了。再說，早點到也沒壞處。
正式寫作注意：在正式報告或學術寫作中，建議使用更簡潔的連接詞（如 "furthermore", "moreover" 或 "additionally"），"and in addition" 在口語中很自然，但在書寫中可能略顯冗贅。
常見短語
What common collocations use "Addition"?What fixed phrases with "Addition" should I remember?
in addition
in addition
此外，另外
in addition to
in addition to [noun/gerund]
除...之外（還有）
a welcome addition
a welcome addition
一個受歡迎的新增事物
make an addition
make an addition (to something)
進行增建、增添
latest addition
the latest addition
最新的增添物
new addition
new addition
新增的事物或成員
as an addition
as an addition
作為一個附加物
常見錯誤
What are common mistakes with "Addition"?Which "Addition" sentences look correct but are wrong?
×In addition of his salary, he gets a bonus.
✓In addition to his salary, he gets a bonus.
The correct preposition after "in addition" is "to", not "of". "In addition to" is a fixed phrase meaning "besides" or "as well as".
×The addition for the new wing will be completed next year.
✓The addition to the building will be completed next year.
When "addition" refers to a new part added to a structure, it is followed by "to" (e.g., an addition to the house). "For" is incorrect in this context.
×He is a valuable addition for our team.
✓He is a valuable addition to our team.
When "addition" means a new member or element, it is followed by "to" (e.g., an addition to the family/team). "For" is not used here.
×Addition, we need to consider the cost.
✓In addition, we need to consider the cost.
"In addition" is a transitional phrase used to introduce an extra point. Using "addition" alone is incorrect and sounds unnatural.
×We made an addition of a new rule.
✓We made an addition to the rules.
The common pattern is "make an addition to [something]", not "make an addition of [something]". The new item is the addition itself, not the object of "of".
×The room looks bigger with the new addition of furniture.
✓The room looks bigger with the addition of new furniture.
Word order is important. The phrase is "the addition of [the new thing]". The adjective (e.g., new) typically describes the thing being added, not the word "addition".
詞形變化
What are the word forms of "Addition"?What are tense/participle forms of "Addition"?