该句使用了对比结构，通过“when you shouldn't”这一状语从句强调了时机选择的重要性。
If we were to speak of a paragon in this regard, none would be more fitting than Zhuge Liang. He assisted the Liu family throughout his life with unwavering loyalty, devoting himself tirelessly and giving everything until his final breath, without seeking any reward.
Some people continue to trade in flattery, even though they know it is a counterfeit coin.
Leaving a way out when you shouldn't is a dead end; failing to leave a way out when you should is also a dead end.
Just as a clothing store was about to close, a shopping enthusiast fell in love with a garment. Standing before the fitting mirror, she found it so hard to take off that she eventually walked to the checkout wearing it. Upon reaching the counter, she was stunned to realize that the remaining money was not even enough for her bus fare home.
Reality is filled with helplessness, and life is fraught with trivialities. Many times, it is not the body that feels exhausted, but the soul. In those moments, you simply want to be alone, lying there with eyes closed, lost in silent thought.
A life of both joy and sorrow is fulfilling; a life of success and failure is reasonable; a life of gain and loss is fair. It is the ups and downs that give life its value. There is winning and losing, success and failure, gain and loss; to achieve, one must endure; to find light, one must accept darkness; to pursue a calling, one must make sacrifices. Every extraordinary feat in this world requires overcoming extraordinary perils and hardships; only those who remain calm and composed amidst the storm can reach distant shores.
若要论及这方面的典范，那么非诸葛亮莫属。他一生辅佐刘氏父子，绝无二心，鞠躬尽瘁，死而后已，不计任何报酬，尽心竭力地奉献。
明知吹捧是块伪币，却仍有人在作交易。
不该留退路时留退路是死路一条，该留退路时不留退路也是死路一条。
就在服装店快要下班的时候，一位狂热的购物者看中了一件衣服。她站在试衣镜前，迟迟不愿脱下。最后，她索性穿着这件衣服走向了收银台。然而一到收银台，她却傻眼了：剩下的钱甚至连回家的车费都不够了。
现实有太多的无奈，生活有太多的繁琐。很多时候，让人疲惫的并非身体，而是心灵。那种时刻，你只想一个人待着，静静地闭上眼睛躺着，默默地思考。
有苦有乐的人生是充实的；有成有败的人生是合理的；有得有失的人生是公平的。人生因坎坷不平才具有价值。有赢就有输，有成就有败，有得就有失；要成就必须去承担，要光明必须接受黑暗，要志业必须付出。世间任何一件非凡之事，必经受超常的险境与苦难，唯有在旋涡中保持淡定从容，方能行至远方。