Why you want to take part in the postgraduate entrance exams？
That's the reason why I choose to be a postgraduate rather than get a job.
Firstly, I have intense interest in pedagogy, which is very practical and far-reaching. I figured out the knowledge I had mastered in the past four years was not enough to solve some specific problems, especially in……（your major）.
I study because I want to further my knowledge and skills in my major field, and get a higher degree.
The main reason for taking the Master's degree examination is to further enhance one's academic qualifications and professional skills. By attending a master's program, students can gain more.
这些表达方式涵盖了不同的动机和理由，可以根据具体情况进行选择或组合使用。例如，如果你对某个专业有浓厚的兴趣并且认为现有的知识不足以应对未来的挑战，你可以说：“Firstly, I have intense interest in pedagogy, which is very practical and far-reaching. I figured out the knowledge I had mastered in the past four years was not enough to solve some specific problems, especially in……（your major）.”
