It is necessary to study the local examination instructions carefully, and dredge the test sites such as mathematical concepts, formulas and methods put forward in the examination instructions one by one, especially if it is difficult to master them at ordinary times, and it is necessary to check and fill in the gaps in a planned way to form a reasonable knowledge structure.

According to the types and difficulties of the first three questions in college entrance examination, the knowledge blocks such as trigonometric function, probability statistics, solid geometry and space vector, function, derivative and inequality synthesis have been broken through. Pay attention to the review of new content. These have become the focus and focus of the college entrance examination in recent years.

Learn to form the habit of reflection: reflect on what knowledge points are used in the process of solving problems, analyze the relationship between the conditions of setting questions and knowledge points, and deepen the understanding of knowledge; We should pay attention to the methods used in reflection and sum up the rules in order to achieve the purpose of drawing inferences from one example to another; Attention should be paid to recalling similar exercises with this problem, making comparative analysis and finding skills and methods to solve such problems; We should pay attention to the confusing and error-prone places in the reflection questions, and deliberate the "wrong question set" in a planned way.