I beg to apply for some days' leave of absence from (某日) to (某日) instant, in order to (办某事).
To support my application, I herewith submit a (某证明).
I should be very much obliged if you will grant my application. As regards the (工作或学习事务) to be miss during my abxence, I will do my best to make them up as soon as I get back from leave.
I would like to know if I could ask for a casual leave of absence from your Oral English class this Wednesday morning.
Yesterday evening I got a phone call from my cousin, who is now running a small firm in suburbs of this city . He needs an interpreter for two days but cannot find the most reliable person， so he wants me to have a try. Personally ， I regard this as a golden opportunity to put what I have learned in your class into practice， but I need your permission of absence . If you think I may go and help him get over the difficulty， I am confident that I ll do a good job and both of us will grateful.
I'm sorry I have to ask for two daysoff. Because I had a bad cold yesterday. And now I have a high fever.
I am feeling very bad.I can't study freely in class .I went to see a doctorin the hospital.He gave me some medicine and asked me to stay in bed for two days .So I'm sorry to ask you two days leave. I hope you can ratify my ask. Thank you very much.
At first please forgive my interruption. Because I don't feel up to par this morning and i must be in hospital to get the hospitalization, i couldn't come to school within following two days.I will return to school soonly as i made it.Thanks for your understanding.