接上去處理、盯上
這一族是 onto 的抽象延伸：把「移到一個目標上」從物理空間搬到人與事情上。常跟 get/be 連用（get onto / be onto），重點在「你把注意力或動作扣到了某個人、某件事上」。
get onto someone (contact them) · preposition · B1
In 'get onto someone', contacting them to tell or ask them something.
去找…講
核心畫面
You can picture onto as a small arrow that lands ON a surface: something is moving, and the move ends with it sitting on top of something else — onto a bus, climbing onto a roof, dropping a plate onto the table. It is 'on' plus motion: not already there, but arriving and coming to rest on it.
可以把 onto 想成一枝落在表面上的箭頭：某個東西正在移動，而這個移動的結尾是「落到另一樣東西上面」——踏上公車、…更多收起
可以把 onto 想成一枝落在表面上的箭頭：某個東西正在移動，而這個移動的結尾是「落到另一樣東西上面」——踏上公車、爬上屋頂、把盤子放到桌上。它是 on（在上面）加上動作：不是本來就在上面，而是「移過來、落到上面」。From the picture
Also in this word
onto (moving to rest on) · preposition · B1
Moving and coming to rest on the surface, top, or area of something.
到…上
onto (facing/opening towards) · preposition · B1
Used to say that a room, door, or window faces or opens towards a place.
朝向、通往
原始詞典資料4 筆記錄
以下是外部詞典記錄的用法，原文照列，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。
ontoprep/ˈɒn.tuː/
- 1
Arriving upon or on top of (speaking of a physical or metaphorical movement).
- My cat just jumped onto the keyboard.
- A new drug has just come onto the market.
- 2
informalAware of.
- The thought-police were onto my plans of world domination.
- 3
mathematicssciencesBeing an onto function with a codomain of (see below).
- The exponential function maps the set of real numbers onto the set of positive real numbers.
ontoadj/ˈɒn.tuː/
- 1
mathematicssciencesAttaining each of the values in its codomain; having its image equal to its codomain.
- Considered as a function on the real numbers, the exponential function is not onto, as it never takes on values less than or equal to zero.
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。