- 1一對一（英國課堂也常說 one-to-one）
One-on-one means the thing happens between only two people, with nobody else in the middle. A one-on-one talk is just you and the teacher. One-on-one basketball is two players, one against the other. At work, a one-on-one is often a private meeting with your boss — some offices even use it as a noun: “Let's have a one-on-one.” It is mainly American English; British speakers often say one-to-one for teaching and talks, though sport still likes one-on-one. Though actually, people stretch it: a one-on-one video call is still two people, even if they are not in the same room. It is not the maths phrase one-to-one, which can mean each item in a list matches exactly one item in another list. For , the people meaning is the one you will hear.
one-on-one 的意思是只有兩個人，中間沒有別人。例如 a one-on-one talk 就是你和老師的單獨談話，one-on-one basketball 是兩個人打的一對一籃球。在職場上，它常指和主管的私下面談，也可以當名詞用，像「Let's have a one-on-one.」（我們來個一對一的談話吧。）這個字主要是美式英文，英式英文的談話和教學常說 one-to-one，運動則還是常用 one-on-one。就算是視訊，只要是兩個人，也還是叫 one-on-one。
數學裡的 one-to-one 是一一對應，兩份清單的項目互相配對，那是另一種用法，和人之間的一對一不一樣。
組成one + on + one. The picture is one person on (against / with) one other person.
同家族的字
- one-to-oneoften the British way to say the same thing, especially for teaching
原始詞典資料5 筆記錄
以下是外部詞典記錄的用法，摘錄並精簡格式，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
one-on-oneadj
- 1
Involving direct communication or competition between two people.
- Such one-on-one “swearing contests” are routinely decided in favor of law enforcement officers, but in this case the district court sided with the accused bank robber.
- 2
hobbieslifestylesportsInvolving one attacker and one defender.
- After several near misses, Van Persie finally reached three figures by turning in Walcott's cross before Jaaskelainen saved from Walcott when one-on-one.
- Swedish striker Isak was also foiled by Ortega in a one-on-one opportunity shortly before half-time. If converted, that may have put the game beyond City's reach.
- 3
mathematicssciencesbijective or injective
one-on-oneadv
- 1
In a one-on-one manner.
- He was willing to go one-on-one with the District Attorney himself.
one-on-onenoun
- 1
A contest involving only one player on each side, especially of an activity often involving teams.
- Why don't we play a little one-on-one until the others show up.
摘錄自 英文維基詞典 English Wiktionary，已精簡格式；依 CC BY-SA 4.0 授權使用，改動後的內容同樣以此授權提供。