英语的fun可数吗?是What a great fun it is!还是What great fun it is!

英语的fun可数吗?
是What a great fun it is!
还是What great fun it is!

不可数.它有特殊用法.很有趣.说 it's fun.
还有个句型 have fun (in )doing sth.作某事是有乐趣的.
比如.we have fun learning English
选What great fun it is!

NONONONO。。。

What great fun it is!
不可数