Question

语法问题，求大虾帮帮忙，很急啊在此先谢过了

下面这段话中涉及到哪些语法知识，例如是否有从句之类的（但不局限于此）Suddenly I wanted to write about that，about the warmth and good felling of it，but I wanted to put it down simply for my own joy，not for Mr.Fleagle .It was a moment I wanted to recapture and hold for myself.I wanted to relive the pleasure of that evening.To write it as I wanted，however，would violate all the rules of formal composition I'd learned in school，and Mr.Fleagle would surely give it a failing grade.Never mind.I would write something else for Mr.Fleagle after I had written this thing for myself.

Answer 1

about that，about the warmth and good felling of it 是同位语成分
It was a moment I wanted to recapture and hold for myself. 是关于moment的定语从句
To write it as I wanted 是部分倒装句，因为此处as表示‘尽管‘
after I had written this thing for myself 是时间状语从句

不过说实话，这段话有几处错误之处，是自己写的吗？