华罗庚先生曾说:“数缺形时少直观,形缺数时难入微”这说明数形结合的方法可以把抽象问题具体化,把具体问题系统化构图法解题正是数形结合思想的具体应用,它在解题中的有效运用,体现出数学的和谐美,能把考生从枯燥的数学语言、符号引导到生动形象的数字与图形的游戏中去,从而激 Mr. Hua Lugeng once said: “When there are few shapes, it is less intuitive, and when shapes are missing, it is difficult to understand.” This shows that the combination of numbers and shapes can abstract the abstract problem, and that it is precisely the combination of the number and shape that solves the problem by systematically constructing a specific problem. The specific application, its effective use in problem solving, embodies the harmonious beauty of mathematics, and can guide candidates from the boring mathematical language and symbols to the game of vivid figures and graphics.