I can well remember that there was a time when a deep blue sky.中when的用法when在句中指代先行词a time ,a time 不是宾语么?那when在句中当什么成分?懂的帮忙分析下哈

Question

I can well remember that there was a time when a deep blue sky.中when的用法
when在句中指代先行词a time ,a time 不是宾语么?那when在句中当什么成分?懂的帮忙分析下哈

Answer 1

a time 是时间状语啊
我来还原there was a deep blue sky at that time