Jack seldom make _______(mistake) in his homework.mistake是用单数还是复数
问题描述：
Jack seldom make _______(mistake) in his homework.mistake是用单数还是复数
答
Jack seldom make mistakes in his homework
mistake解释为错误（错题）时可数seldom 不是否定的吗？？后面还有一个人说是单数，到底是啥呀，解释一下呗seldom 对mistake用法没有影响！mistake解释为错误（错题）时可数清楚了相信多数！