反之 — flip the prior condition, get the parallel result.

grammar → 反之

TSUMUGU · TBCL 5 (est.) · 語法

反之 grammar point · tier 1 · conversely — 反之 (and the opposite case)

· fǎn zhī

Opens a second clause that states the opposite case to the one just made — flip the prior condition, get the parallel result.

字源 FORM what the parts do

反 is a hand (又) turning a side over against a slope (厂). 之 is the classical it, pointing back at the statement just made. Together: take what was said and turn it over.

故事 STORY a scene to remember it by

One side of the card is read aloud, then the hand turns it over and reads the back. The back is fixed by the front: same card, the opposite face.

字源自撰記憶法

框 · Frame

[clause A: condition → result] ，反之，[clause A flipped: opposite condition → opposite result]

觸 · Trigger

I have stated one case; now I lay out its mirror image to complete the contrast.

序 · The move

1State the first case fully: a condition and what it leads to.Is clause A a complete claim on its own?

2Place 反之 at the head of the second clause, set off by commas.Does 反之 sit before the new clause, not inside it?

3Write the second clause as the flipped condition with its flipped result.Is clause B the symmetric opposite of A, not merely a surprise within A?

例 · Examples

1睡前before sleep過度excessively運動to exercise容易睡不好sleep badly，反之conversely，聽點音樂listen to some music可以幫助睡眠help sleep

Over-exercising before bed makes it easy to sleep badly; conversely, listening to some music can help sleep.

界 · Boundary

反而

反之 swaps to the opposite case in a new parallel clause (do X → bad; the reverse → good). 反而 stays in one case and marks its outcome defying what you expected (didn't rest, 反而 felt worse).

否則 / 不然

反之 lays out the symmetric opposite as a fact. 否則 warns of the bad consequence if the first does not hold.

睡前運動睡不好，反而聽音樂幫助睡眠 ✗ → 睡前運動睡不好，反之，聽音樂幫助睡眠 ✓ (use 反之 for the opposite case, not 反而)

反之他來了 ✗ → 你不去，反之我去 ✓ (反之 needs a stated first case to flip, not a bare clause)

反之的，我同意 ✗ → 反之，我同意 ✓ (反之 takes no 的 and heads the clause)

English speakers drop the comma frame and treat 反之 as a mid-sentence adverb like really; it heads its own clause, set off by commas.