fun的形容是funny；fun没有副词形式。
funny：adj.有趣的;滑稽的;好笑的;奇怪的;难以解释的;难理解的;可疑的;非法的;不诚实的。
扩展资料
Its good you can see the funny side of the situation.
你能看到情况可笑的一面，这很好。
Its not funny! Someone could have been hurt.
这没什么好玩的！可能有人会受到伤害。
I suspect there may be something funny going on.
我怀疑可能有某种非法勾当在进行中。
The engines making a very funny noise.
发动机发出一种很怪的`声音。
If there has been any funny business, well soon find out.
如果有任何非法的事，我们会很快发现的。
