Cantonese emphasis with 至 and 先至
When something happens only after a condition is met, or only if you do a certain thing, Cantonese marks the result with sin1 zi3 先至 or plain zi3 至. The condition comes first, then sin1 zi3 introduces the delayed or sole result. It is sharper and more precise than a plain zau6 就, and once you hear it you will notice it everywhere.
What sin1 zi3 先至 actually means
Break the phrase into its two pieces. sin1 先 carries the idea of first, the earlier action that has to come before anything else. zi3 至 carries the idea of only then, the result that is held back until the first thing is done. Put together, sin1 zi3 先至 says the result arrives only after, or only if, the condition is satisfied.
The order is fixed and important: the condition comes first in the sentence, and sin1 zi3 先至 sits right before the result. Everything before sin1 zi3 is the requirement. Everything after it is the thing that depends on that requirement.
Plain zi3 至 on its own
You do not always need the full sin1 zi3 先至. Plain zi3 至 by itself can mark a result, an action, or a point in time as later than you might expect, in the sense of only at, or not until. Here it sits right before the verb or the time word that it emphasises.
sin1 zi3 先至 only works when the condition really comes first in the sentence. The part before sin1 zi3 is the requirement, and the part after it is what depends on that requirement. If you flip them, you lose the only after, or only if, meaning. Always say the condition, then sin1 zi3, then the result.
sin1 zi3 先至 versus a plain zau6 就
Both zau6 就 and sin1 zi3 先至 can link a condition to a result, but they feel very different. zau6 就 just means then, a neutral, often quick consequence. sin1 zi3 先至 adds emphasis: the result happens only after the condition, and not before. It is the precise choice when the condition is a real requirement.
| Word | Feeling | Rough English equivalent |
|---|---|---|
| zau6 就 | Neutral, often quick consequence | then, right away |
| sin1 zi3 先至 | Emphatic, the result is held back until the condition | only then, only after, only if |
| zi3 至 | Marks a point as later than expected | only at, not until |
Compare the two directly. With zau6 就 the speaker just reports a sequence. With sin1 zi3 先至 the speaker stresses that nothing happens until the condition is met.
Stating a sole requirement
A very natural use of sin1 zi3 先至 is to say that one specific thing is the only way to reach a result. The pattern is the same: name the single requirement, then sin1 zi3 先至, then the result that depends on it. This is where the only if sense comes through most clearly.
Quick decision guide
- Want to say a result happens only after a condition? Put the condition first, then sin1 zi3 先至, then the result.
- Want to stress only if, that one thing is the sole way to a result? Use sin1 zi3 先至 after that single requirement.
- Want to mark a time or action as later than expected, like not until? Use plain zi3 至 before it.
- Just reporting a neutral then, with no stress on a requirement? A plain zau6 就 is enough. See the aspect markers guide for how time and verbs work together.
Common mistakes
Putting the result before the condition
sin1 zi3 先至 needs the condition to come first. Saying the result and then trying to attach sin1 zi3 afterwards does not work. Keep the shape condition, then sin1 zi3, then result. For only after you eat you can go, say nei5 sik6 maai4 sin1 zi3 ho2 ji5 zau2, with eating clearly first.
Reaching for zau6 when you mean only then
zau6 就 only means then, with no emphasis. If your point is that nothing happens until the condition is met, zau6 就 is too weak. Use sin1 zi3 先至 to make the requirement felt. nei5 lai4 dou3 zau6 daa2 din6 waa2 is a neutral when you arrive, call. nei5 lai4 dou3 sin1 zi3 daa2 din6 waa2 stresses do not call before that.
Dropping sin1 先 when you need it
Plain zi3 至 alone tends to mark a point as later than expected, like not until nine in keoi5 gau2 dim2 zi3 faan1 dou2. When you want the full only after, or only if, sense that links a condition to a result, keep both syllables: sin1 zi3 先至. The sin1 先 is what carries the first, before anything else idea.



