点、直线与平面的相互关系是立体几何中的一个重点和高考命题的一个热点;直线与圆锥曲线的位置关系是解析几何中的一个难点,常常涉及复杂的计算过程.不少学生因为缺乏足够的空间想象能力、较强的抽象思维能力和扎实的计算技能而失分.本文归纳 The relationship between point, line and plane is one of the focuses of the three-dimensional geometry and college entrance examination proposition. The relationship between the line and the conic is a difficult point in analytic geometry, often involving complex calculation process. Many students lack enough The spatial imagination ability, the strong abstract thinking ability and the solid calculation skill but lost points.