To tell the truth, at this moment, no matter what, it's useless. Find a book "Five-year Senior High School Entrance Examination, Three-year Simulation" to do a special training, and maybe you can find some feelings, but it can't be summarized in a day or two. If you have that kind of determination, you will let me say, because doing the problem is a kind of accumulation, and if you accumulate more, you will understand everything.
Another is to find a tutor, not an ordinary college student, but an experienced old teacher who can recommend you. It should work.
Come on!