grammar → 從
TSUMUGU · TBCL 2 (est.) · 語法
grammar point · tier 1 · source 從 (from a starting point)
· cóng
From: marks the place a motion sets out from.

字源 FORM what the parts do

A road (彳) and a foot (止) frame 从, two people one behind the other; 从 carries the sound and the following. A path traced back to the spot it left becomes from.

故事 STORY a scene to remember it by

A line of footprints runs across the ground; 從 points to the spot where the first print was set down.
字源記憶法自撰
框 · Frame
[subj] 從 [origin] [verb of motion]
觸 · Trigger
You want to name where a coming or going started.
序 · The move
1Put 從 before the subject's motion, then name the origin.Is what follows 從 the place left behind, not the place reached?
2Close with the verb of motion (來 / 去 / 出發).A motion verb lands at the end — 從 needs somewhere the motion goes.
3Keep 從 + origin in front of the verb, never trailing after it.The origin is announced before the move, the way the start comes before the journey.
例 · Examples
1Ifrom法國Francecome
I come from France.
界 · Boundary
向 / 往 (toward a target)
從 names the spot left behind (從法國來, set out from France); 向 and 往 name the spot aimed at (向北走, head north). Same road, opposite ends — origin against destination.
在 (located at)
從 needs motion away from a place; 在 sites something still at a place with no leaving. 從法國來 travels, 在法國 stays.
我來從法國。 → 我從法國來。
我從法國。 → 我從法國來。
我在法國來。 → 我從法國來。
English 'from' is a tail preposition ('I come from France'); Chinese 從 leads, sitting before the origin and ahead of the motion verb.