I am much grateful to be employed by you two months ago as an editor for your magazine.
十分感激您两个月之前聘用我为杂志编辑.
主语 I
谓语 am
表语 much grateful.
状语 to be employed by you two months ago as an editor for your magazine.
其中,to be employed by you 原因状语.
two months ago 时间状语