a common one必须要有不定冠词吗

问题描述

改错题：

Your problem is common one among middle school students.

答案是在 common 前加 a。

请问改为去掉 one 可以吗？

在网上见到过这样的句子：

Homesickness is very common among students away from home.

谢谢老师。

老师答疑

刘老师：

Your problem is common one among middle school students. 这句话是有个小错误。
就像你所说，有两种改法：
1. Your problem is a common one among middle school students.
说明：one是代词，用于代替名词，指代某类明确的人或事物。之前一旦有了形容词修饰，那就是把它具体化了，因此要加冠词 a，表示泛指“任何一个”。
2. Your problem is common among middle school students.
说明：is common 是系表结构，形容词 common 作表语，这太正常了。
我估计，你的老师可能是根据参考答案给你判的，有时参考答案可能不够全面。或者，你的老师就认为只有一个是对的。其实，老师没有道理给你判错，这样的例句是很 common 的，请看：
This attitude is common among the people under 25. 这种态度在25岁以下的青年中很普遍。
Burnout is common among teachers. 过度劳累在教师中很常见。

张老师：

Cancer is quite common among aged people and cancer death in the very old can be regarded as a fact of natural termination of life.
= Cancer is quite a common illness among aged people and cancer death in the very old can be regarded as a fact of natural termination of life.
癌症在高龄人群中十分常见，故高龄者死于癌症亦可被认为是一种形式的生命自然终结过程。