1、事物的两面性：
A coin has two sides. 每个硬币都有两面
Every rose has its thorn. 每一朵玫瑰都有刺。
Every advantage has its disadvantage. 有利必有弊。
Misfortune may be an actual blessing. 塞翁失马焉知非福。
Each dog has its day. 每条狗都有它的一天(俗话说：风水轮流转)
It is never too late to mend. 亡羊补牢，犹时未晚。
2、学习奋斗：
Practice makes perfect. 熟能生巧。
No pains no gains. 没有付出就没有收获。
It's never too old to learn. 活到老，学到老。
Where there is a will, there is a way. 有志者事竟成Adversity makes a man wise, not rich. 逆境出人才。
Work makes the workman. 勤工出巧匠。
3、感谢：
Adversity shows insight 同舟共济。
Return when being helped. 知恩图报。
Misery makes strangers friends. 患难时不择友。
It is more blessed to give than to receive. 施恩比受惠更有福。
A truthful friend is the medicine of life. 忠实的朋友是生活中的良药。
4、实现理想：
A young idler, an old beggar. 少壮不努力，老大徒伤悲。
Constant dropping wears the stone. 滴水穿石。
If winter comes, can spring be far behind 冬天来了，春天还会远吗。
He who has never hoped can never despair. 从来不抱希望的人永远不会失望。
You have to believe in yourself. That is the secret of success. 你必须相信自己。这是成功的秘诀。
Ideal is the beacon. Without ideal, there is no secure direction; without direction, there is no life. 理想是指路的明灯。没有理想，就没有坚定的方向;没有反向，就没有生活。
