The first step: you must do all the questions well in order to lay a good foundation.
Step 2: Do the real questions. My experience is to do it at least twice, and three times is best. Some students also recommended Li Zhengyuan's 400 questions to be real first, and the effect should be good. I was pressed for time and only did the real question twice. It is suggested to keep the latest set of real questions when doing real questions, so that it can be used as a mock exam at the end of the term to test the review effect.
At the same time, from the perspective of the proposer, we should first master what knowledge points are contained in each chapter, what points are contained in each knowledge point and what the specific content of each point is according to the examination outline. Secondly, every time you review a knowledge point, you should think from the proposer's point of view, whether he will give a question according to this knowledge point, what kind of questions he will give, what similar questions he has seen before, from which angle he can give a question, whether he can give an inverse question and what other knowledge points he will combine to give a question. Looking through the real questions of the postgraduate entrance examination over the years, we can see how this knowledge point appears in each chapter and how it is handled when doing the questions. For example, knowledge points such as limit, derivative, definition, integral upper bound function, comparison of infinitesimal order, integral mean value theorem, differential equation, tangent and so on are often combined with other knowledge points to give questions. If you compare and analyze carefully when reviewing, you will be full of confidence in the exam.