a bit of 修饰可数名词还是不可数名词

　　例句：

　　We got a bit of a scare.

　　我们受了点惊吓。

　　I do a bit of shopping for the missus.

　　我帮老婆买了一点东西。

　　Did he give up? Not a bit of it!

　　他放弃了吗？根本没有！

　　Today was really a bit of a write-off for me

　　今天对我来说真的有点儿白白浪费了。

　　He's a bit of a pedant.

　　这人有点迂。