an education

【问】 不可数名词不能带不定冠词，这是我初学英语时就牢记的英语语法规则。但是我却遇到了下面的句子，使我迷惑不解：

She has had an education.

【答】 有些不可数名词，单独使用时不能带不定冠词，但是，加上定语后，就可以带不定冠词。

sensitivity→a remarkable sensitivity→a charming sensitivity→a sensitivity that delight-ed the critics

business →a brick business

education→a good education→a college education

请考察下面的实例：

1. She gave her children a first-rate education. (Shaw)

她让她的孩子们接受了一流的教育。

2. You must get a thorough education. (London)

你必须接受全面的教育。

3. He received a good education.(ALD)

他受过良好教育。

4. Marriage is a lifelong business. (Galsworthy)

婚姻是一辈子的事。

5. It was a difficult business getting everything ready in time. (GPU)

把所有的事情都及时准备好是一件很困难的事。

现在可以正面回答你的问题了。你所提到的an education实际上暗含着一个定语：good。She has had an education.=She has had a good education.(她受过良好的教育。)这样一来，不可数名词与不定冠词连用，就很好理解了。