grammar → 用
TSUMUGU · TBCL 2 (est.) · 語法
grammar point · tier 1 · instrumental 用 (with / by means of)
· yòng
Names the instrument or means before the main verb: take up X, then do the action with it.

字源 FORM what the parts do

用, a wooden bucket bound in a hoop — the old graph of 桶, borrowed whole for use. The tool comes first, the work it does comes after.

故事 STORY a scene to remember it by

A hand lifts the bucket from the well, then carries the water in.
字源記憶法
框 · Frame
[subj] 用 [instrument] [verb + obj]
觸 · Trigger
You want to name the tool you act with before saying what you do.
序 · The move
1name the actor
2用 + the instrumentis this the tool/means, not the thing acted on?
3the main verb + its objectdoes a real action follow, not 用 left stranded?
例 · Examples
1can / knows how touse / by means of筷子chopsticks吃飯eat (a meal)
He can eat with chopsticks.
界 · Boundary
用 takes up the means you act WITH (用筷子 = with chopsticks); 把 takes up the object you act ON (把飯 = the rice itself). The chopsticks are the tool, the rice is the target.
用 marks a tool; 跟 marks a person you act alongside. 用他 would mean 'using him', 跟他 means 'with him'.
instrument after the verb: 他吃飯用筷子 → 他用筷子吃飯
verb dropped, 用 left stranded: 他用筷子 → 他用筷子吃飯
marking a companion with 用: 我用朋友去 → 我跟朋友去
English puts 'with chopsticks' after the verb ('eat with chopsticks'); the instrument in Chinese comes before the verb, so learners strand it at the end.