Asking for an Extension of Leave续假条

Dear Mrs Huang,
　　
　　I am still lying in bed and can't get up. The doctor told me to have a rest for another two days. Please give an extension of leave for two days.
Yours,
Wang Jian
【参考译文】
亲爱的黄老师：
　　
　　我仍然卧床不起。医生告我再休息两天。请您再批准我两天病假。
您的，
王建