1. A man is not old until regrets take the place of dreams. 当后悔取代了梦想，一个人才算老了。

2. Don’t let a little dispute break up a great friendship. 不要让小小的争端损毁了一场伟大的友谊。

3. Johan Wolfgang Goethe: Man errs so long as he strives. 德国诗人、剧作家歌德：只要奋斗，人就会犯错。

4. You shouldn’t have scolded the boy at all, he is a child after all； above all, he made only two mistakes in all. 你根本不该责备那男孩，他毕竟还是个孩子；更重要的是，他总共才出了两次错。

5. Try to have a mind of your own 做有主见的人。

6. Don't nag me! 别在我面前唠叨!I feel terrible! 我觉得遭透了!I guess so! 我想是吧!

7. Accept what was and what is, and you'll have more positive energy to pursue what will be. 接受过去和现在的模样，才会有能量去追寻自己的未来。

8. Being criticized is awful 被人批评真痛苦。

9. There is no doubt that our educational system leaves something to be desired. 毫无疑问，我们的教育系统还有待改进。

10. On no account can we ignore the value of knowledge. 我们绝不能忽视知识的价值。

11. You've gone too far! 你太过分了!I can't take it anymore. 我受不了了!

12. A bad workman always blames his tools. 拙匠总怪工具差。

13. A contented mind is a perpetual feast. 知足长乐。

14. A good beginning is half the battle. 好的开端等于成功一半。

15. A little pot is soon hot. 壶小易热，量小易怒。

16. It is important for everyone to learn English well in our rapidly developing world. 在这个迅速发展的世界里，对每个人来说，学好英语是非常重要的。

17. The harder you work at it, the more progress you will make. 你工作越努力，你取得的进步就越大。

18. If everyone makes a contribution to protecting the environment, the world will become much more beautiful. 如果每个人都为保护环境做出贡献，世界会变得更加美好。

19. Education is the door to freedom. 教育是通向自由之门。

20. Challenges make life interesting. 挑战使生活变得有趣。

21. Difficulties make life worth living. 困难让生活更有价值。

22. Learning a new language can be a challenging but rewarding experience. 学习一种新语言可能是一个具有挑战性但很有回报的经历。

这些句子涵盖了不同的主题和情感，适合初中生在课外阅读和学习中使用。希望这些句子对你有所帮助!