Verb pattern · CEFR B1
be serious
verb_pattern
认真起来；正经；别开玩笑
- 1.
to be earnest and sincere, not joking; often used as a command to stop joking
认真起来；正经；别开玩笑
认真起来；正经；别开玩笑
In use
Be serious! This is an important matter.
Dictionary facts from AI_SUPPLEMENT.