1. Different objects: If "Starting Point of Grade One" is marked, then the object is the primary school that offers English classes from Grade One. The whole set of textbooks consists of twelve books in six grades, the first of which is the first volume of Senior One. Marked as "the starting point of the third grade", the applicant is a primary school that offers English classes from the third grade. The whole set of teaching materials consists of six books in three grades.

2. Different levels of difficulty: the starting point of Grade One is slow, so the difficulty is low, and the starting point of Grade Three is fast and difficult. The Starting Point of Grade Three is a teaching work published by People's Education Publishing House, which vividly shows the language situation with wonderful animated stories and nursery rhymes, making children happy and easy to learn.

3. Different books: There are twelve textbooks for six grades in the whole set, which are marked as "the starting point of senior one", and the first one is the first volume of senior one. There are six textbooks in three grades in the whole set, which are marked as "the starting point of Grade Three". The content of the unit revolves around the theme of the module, while modules of different grades reproduce the same theme. Let students develop through indirect repetition of English knowledge content, and improve their English learning performance through spiral rise.