be of +名词要冠词吗?

问题描述:

be of +名词要冠词吗?
rt.语法书里有两个练习,分别为:
He was too much of a coward to tell the truth.
The little girl is a little of coquette.

不要,
一般是加抽象意义名词,抽象意义名词也一般不可数
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