I always felt she looked down on me because I wasn't as educated as she was.

looked 是动词 look 的过去式，表示"看"的动作。 down 在这里是副词，表示"向下"的方向。 on 是介词，表示"在...之上"或"针对"的关系。 look down on 是一个固定短语，字面意思是"向下看"，引申为"看不起、轻视"的意思，表示对某人或某事物持居高临下的态度。