How to write a guarantee that you won't bring your mobile phone next time?

First of all, write clearly that it is incorrect to bring a mobile phone to class, and the harm of bringing a mobile phone;

Then keep repenting;

Finally, I will promise never to take my mobile phone to class again, and I will be punished after taking my mobile phone to class.

model essay

Dear teacher:

Today, I write this letter of guarantee to you with guilt and regret, to show you my deep understanding of the bad behavior of bringing my mobile phone to school and my determination never to bring my mobile phone to school again.

As early as when I set foot in school, the teacher repeatedly stressed that all students should not bring their mobile phones to school. However, my lack of understanding of mistakes has led to such a thing. While writing this guarantee, I really realized the seriousness of this matter and my mistake, which violated the school rules. Thirdly, my behavior has also caused extremely bad influence on the students in the school and damaged the image of the school.

As students, we should obey the teacher's teaching, obey the teacher's arrangement, respect the teacher and attach importance to teaching. But my performance has brought a bad head to my classmates, which is not conducive to the construction of the school's style of study. How much the teacher cares about us and loves us!

But I have given my teacher trouble, trouble, so I will abide by the regulations of the school, listen to my teacher, fully understand my teacher's requirements, and ensure that similar things will not happen again. I hope the teacher can give me a chance to turn over a new leaf. Through this incident, I deeply felt the teacher's behavior and emotion that ruined my study style, which made me feel very guilty psychologically. I am very grateful to my teacher for his profound education.

I promise that I will never bring my mobile phone to school for no reason, and similar situations will never happen again. I sincerely accept criticism and am willing to accept it. For all this, I will further summarize and deeply reflect, and sincerely ask the teacher to believe that I can learn lessons and correct my mistakes!

Sponsor, your student XXX?

Date, year and month