帮忙分析一下这个英语句子！

Question

It was exactly what I needed.
what I needed做什么成分?
My mother helped me to understand how much she had given me.
how much she had given me做什么成分？

Answer 1

意思：这恰恰是我需要的。
what I needed做表语，主语是It，系动词was作谓语，
状语是exactly，what i needed和was一起构成系表结构。所以what I needed做表语，实际上也是was的宾语，可是因为was是系动词，所以特殊地，它做表语。

第二个句子，主语是my mother，谓语是helped，宾语是me，to understand how much she had given me. 是不定式做宾语补足语。而在这里how much she had given me. 是一个由how引导的宾语从句，做understand的宾语，在整一个句子中没什么可言，在这里可以把它归入后面 句子中，宾语和宾语补足语可以变为I understand how much she had given me，只能说在这里是作为宾语的。是understand的宾语

Answer 2

WAS系动词，系动词后面跟着的应该是表语吧，what i needed是表语从句

补充里的那个how much she had given me做understand的宾语，但这句话是简单句而不是从句，因为整句话就一个谓语helped

Answer 3

只是个句型而已，如果把essential
放componets
前面，则后面的句子就会改变。
也可以放前面的。

Answer 4

what I needed是宾语吧
how much she had given me应该是宾语补足语吧

以上仅为个人愚见,如有出错,请见谅.

Answer 5

essential这个形容词强调的不是前面的那个单词，是一整个句子