你叫李铁，20xx年10月21日向英语老师江老师请假。
内容：由于感冒今天不能来上1，2节的英语课。昨天淋了雨。晚上发烧，医生建议休息一两天，身体恢复后会立即去上课。请批准为盼。英语课结束后会给老师打电话。附上医生的证明。
Dear Mr/Ms Jiang
I was unable to come to 1st and 2nd period today.Due to the rain yesterday, I was wet and had temperature at night. The doctor adviced me to rest for several days and after my recovery, I will attend school as soon as possible.
I am sincerely sorry about the inconvenience. However, I would like to have your permission. Also, afterwards I would phone you and there's the certificate by the doctor.
Li Tie