Answer:
Dear Professsor.
My name is Rajesh and I am part of the 7F class. I believe that you do not know me, because I have been missing swimming lessons for a month.
The reason for my absences in classes is an immense phobia that I have of large volumes of water, which prevents me from being able to participate in swimming classes. Although I have a psychological certificate that confirms my phobia, I did not have the courage to present it to you, for fear of becoming the target of a joke from my classmates.
Anyway, I would like to apologize for my behavior and for my unexcused absences in class. I would like to set up a meeting with you to better explain my situation and to apologize personally.
I appreciate your patience.
Rajesh Been.
Step-by-step explanation:
When writing an apology to a teacher it is necessary for the student to present a short and direct text, where he identifies himself, presents the reason for his speeches and apologizes using formal words and a cultured language. This type of letter should end with a thank you for the reader's time and patience, in addition to presenting the full name of the letter's author, as the example above shows.