a foolish thing to do的用法和样例：
- What induced you to do such a foolish thing?
- What induced you to do such a foolish thing ?
- Invading Liechtenstein was admittedly a foolish thing to do, but at least the Swiss Army has shown it knows how to bring a failed military action to a happy conclusion.
- It was out of keeping for him to do such a foolish thing.
- John Coffey: Now why would you want to do a foolish thing like that?