Asking for an Extension of Leave

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
    【參考譯文】
    親愛的黃老師：
    我仍然臥床不起。醫(yī)生告我再休息兩天。請您再批準(zhǔn)我兩天病假。
    您的，
    王建