⋯⋯了⋯⋯（就）⋯⋯
解説
该结构表示前一动作完成後立即发生後一动作，强调时间上的紧密衔接。'了'标记动作完成，'就'加强即时性。
This structure indicates that the second action happens immediately after the first action is completed. '了' marks completion while '就' emphasizes immediacy.
例文
他下了课就去图书馆。
He goes to the library right after class.
他喝了酒就会脸红。
He gets red in the face as soon as he drinks alcohol.