数列是高中数学的核心内容之一,是历年高考考查的重点与热点.对数列的学习,既要加强对概念的深刻理解,又要重视运算技能的训练,从而减少在解题中不该发生的错误.本文就数列问题中的几类容易失分、丢分题目进行分类解析,供同学们参考. The number sequence is one of the core contents of high school mathematics and is the focus and hot spot of the college entrance examination in the past years.Logistics series should not only strengthen the deep understanding of concepts but also pay attention to the training of arithmetic skills so as to reduce the occurrence of problems Of the errors.This article on the number of columns in several types of easy to lose points, dropping the subject classification analysis for the students reference.