It'd be foolish to... ……很傻。用法透视这个句型通过说“做某事很傻”来劝阻别人。当然，口气不很友善，限于熟人之间使用。

　　支持范例

　　1. It'd be foolish to go to the beach on such a stormy day.

　　暴风雨天还要去海滩太不明智了。

　　2. It'd be foolish to continue your relationship with such a violent man.

　　继续与这么暴力的男人交往，你太傻了。

　　3. It'd be foolish to eat all that cake - you'd probably get sick.

　　吃掉整块蛋糕实在太蠢了--你可能会觉得不舒服。会话记忆

　　A: So did you get in touch with your brother?

　　联络到你弟弟了吗?

　　B: No, not yet. I'm really worried.

　　还没有，我好担心。

　　A: Well, it'd be foolish to call the police. He probably just went away overnight.

　　报警太蠢了吧，他大概只是在那里过夜而已。

　　B: Maybe you're right. But I'm still worried.

　　或许你是对的。不过我还是担心。