首先,lay是lie 的过去式,该句语法结构是主语+谓语+状语,dying属于形容词作状语,译为“垂死的”.侧重说明主语“我”的状态,而不强调躺这个动作,所以不用副词.又如：
We finally arrived,tired and hungry.
One woman was lying in bed,awake.