I'm in junior high school now. I used to be good at math, but what should I do if the math teacher in junior high school couldn't explain clearly? Don't talk about the format.
In fact, whether the teacher is a guide or not depends mainly on whether you are interested in mathematics! The format of your question is according to the example format in the book! If you don't understand what the teacher said, you can also ask the teacher. It's not convenient to ask in class, just wait until after class to find him!