Hello, let's solve the chemical problem first. I think my chemistry is not bad. I am in the top ten in my grade. In fact, high school chemistry is really not difficult. There are two ways to learn chemistry: one is conservation. All chemical changes are always conservative. Second, analogical thinking, for example, if you learn the properties of metals and open the periodic table of elements, most of the main groups and sub-groups are metals, and you will certainly never finish learning. Therefore, we take iron, magnesium, aluminum, alkali metals and so on. These are closely related to life, and take this as a point and expand it as a surface to simply understand the properties of metals. Then look for universal properties (related to the electrons in the outer layer of the atom). Also learn personality (such as the gender of aluminum). Why can't you learn chemistry well by studying in this way, grasping the foundation and practicing moderately?

Physics and mathematics can really only be solved by understanding and adding problems, which is the only thing I have no experience with.

English is very important, you can't just recite words. It is really necessary to cultivate a sense of language, which is not mysterious, but a manifestation of solid grammar and high English thinking. Reading more articles is the best choice. For doing problems, the efficient way is to look at the problems you have done repeatedly, review and think, so as to improve your overall strength. Why not?

Hehe, here you are! If you have any questions, please ask me and reply to QQ number. . . .