to tell right from wrong不用 the

有人问这样一句话:

(1)I doubt whether he can really tell right from wrong.

我们认为这里的 right 与 wrong 之前都应加 the ,不知是否正确?

right 和 wrong 二名词连用时其前皆不用冠词。除上述句(1)外,再如:

(2)One must have some sense of right and wrong.

但其复数形式连用时,即 rights and wrongs (真相,是非曲直),前面则常用定冠词,后面常用 of 短语,如:

(3)I don't care about the rights and wrongs of the matter. I just want you both to stop arguing.