HSK 7–9 grammar · pattern
动词+就+动词,别⋯⋯
V就V,别⋯⋯ — fine, do it — just don't …
Pattern
+ + + + +
( ) can be left out · other words may come before, between and after
How it works
Repeating the verb across 就 concedes the action — go ahead — and the 别 clause attaches the speaker's one condition. It is impatient, informal, and typically ends a small argument.
Examples
走就走,别磨蹭了。
Zǒu jiù zǒu, bié móceng le.
Fine, let's go — just stop dawdling.
说就说,别吞吞吐吐的。
Shuō jiù shuō, bié tūntūn-tǔtǔ de.
Say it if you're going to — don't hem and haw.
Related
(要+)动词+就+动词+个+补语 · (要)V就V个 + 补语 — if you're going to, do it properly爱A不A · 爱A不A — do it or don't, see if I care

See it in a story
In the app, 动词+就+动词,别⋯⋯ is underlined wherever it appears in the stories you read, and practised with sentences from them. Free.