I have been reading your newspaper for many year with a great enthusiasm and interest.

问题描述:

I have been reading your newspaper for many year with a great enthusiasm and interest.
这里enthusiasm不是不可数吗,怎么用a呢

一些抽象名词可以用于
a(an) + 形容词+ 抽象名词
a(an) 表示 一种,一段时间的
再如:a good education
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