Such an experience befell a certain young girl the first time she was travelling alone.
问题描述：
Such an experience befell a certain young girl the first time she was travelling alone.
the first time 是什么成份
答
the first time 相当于从属连词,引导时间状语从句
the first time +陈述句(sb.did sth.) :当某人第一次做某事的时候
句意:当她第一次独自旅行时,这样的经历就降临到这位年轻的姑娘身上.