一个很难的英语句子结构的分析----高手帮忙

Question

I happened to be one of people on the way to work that morning. I went from subway line to subway line to find that most service had stopped. Aftermaking my way through Crowds of people, I finally found a subway line that was operating. Unfortunately, there were so many people waiting to board the subway that I could not even get down the stairs to the platform. So I took the train going in the opposite direction, and then switched back to the downtown train. Finally, 【after what seemed like forever, the train reached my stop.】 Then I had to walk several blocks in the increasingly heavy rain. When I finally got to my office, I was wet through, exhausted and discouraged.
请分析【】里句子的结构，详细点，尤其是after what seemed like forever，最后标准翻译一下。

Answer 1

after是介词，这里它的后面跟了一个宾语从句，即what seemed like forever。整句话的意思是：最后，过了很久的时间（像永远一样久），火车才到达我要下的哪一站。

Answer 2

Finally, 【after what seemed like forever, the train reached my stop.】
最终，在历经仿佛是永恒那么久的时间之后，火车终于到达了我的目的站。

Finally状语，after what seemed like forever整个作为finally的修饰,可以当做状语从句；
主句是the train reached my stop。

说很复杂我还以为整段话是一个句子呢！括号里的句子表达的是曲折漫长的乘坐地铁经历。追问

哎，我就是最想知道what seemed like forever的“结构”和“直译”。

追答

what引导的状语从句，用来形容finally。直译为“感觉就像永恒（那么久）”。
英语语法作为工具是帮助我们学习和理解的，用得得心应手就行。
此外，我个人很喜欢凭语感来，语法排在语感之后。

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Answer 3

就在（这种糟糕情况）看起来会一直持续下去时，火车到站了。
what代指前面所说的糟糕情况（地铁拥挤），感觉并不很复杂