a skillful carpenter的用法和样例：
- He is a skillful carpenter.
- A skilled carpenter reminds people of olden times in Taiwan because nowadays wooden objects are mostly machine-made.
- He is a skillful football player.
- The point is there is a difference between an interest and a skill.
- An attainment, such as a skill or social accomplishment.
- That's a skillful piece of bricklaying.