teach an old dog new tricks

例句：

1. 1. She taught me how to play the piano when I was young.
   她年轻时教我弹钢琴。
2. 2. The teacher explained the problem in a clear and concise manner.
   老师用清晰简洁的方式解释了这个问题。
3. 3. He taught his students about the importance of teamwork.
   他教导他的学生们团队合作的重要性。