Pattern
Topic, contrastive comment
Core idea
Chinese topic-comment sentences can put one item first to contrast it with another item or expectation.
The topic is what the sentence is about. The comment says what is true for that topic.
When to use it
Use contrastive topics when you want to say “as for this one...” and imply a different comment for another topic.
This is common in everyday answers, corrections, and comparisons.
Usage boundary
This is not a new particle or fixed phrase. It is a discourse use of topic-comment word order, so context matters.
Examples
咖啡我不喝，茶我喝。
Kāfēi wǒ bù hē, chá wǒ hē.
Coffee I do not drink; tea I do drink.
这本书我看过，那本还没。
Zhè běn shū wǒ kànguo, nà běn hái méi.
This book I have read; that one, not yet.
钱我有，时间没有。
Qián wǒ yǒu, shíjiān méiyǒu.
Money I have; time I do not.
Seen in stories
This Alley, That Alley
阿柏说，这条巷子我熟，那条我不熟。
A Bo says, “This alley I know well; that one I don't.”
This Alley, That Alley
她说，早餐店我推荐，纪念品店我不推荐。
She says, “The breakfast shop I recommend; the souvenir shop I don't.”
This Alley, That Alley
阿柏说，照片这里可以拍，声音那里比较好听。
A Bo says, “Photos you can take here; sound is nicer over there.”
This Alley, That Alley
甜的你带，咸的我带，中间让游客自己选。
“Sweet ones you lead; savory ones I lead; in the middle, let visitors choose.”
This Alley, That Alley
第二天，游客走完以后说，这条巷子很有故事，那条也很有味道。
The next day, after visitors finish the walk, they say this alley has stories and that one has flavor too.