请问，下面的这个句子结构如何分析，谢谢！what，it，都是什么成分，有点不懂。

Question

Only by reading as much as possible can you acquire your own sense of language,which is what it take to write the English composition well.

Answer 1

Only by reading as much as possible can you acquire your own sense of language, which is what it takes to write the English composition well.
一个半倒装句，为了强调 by reading as much as possibe部分，后半句是由 which 引导的一个非限定性定语从句，这个定语从句是一个主系表的结构，表语部分是由 what 引导的一个表语从句，what 同时又是表语从句中take的宾语，it 是形式主语，前置代表后面的“to write the English composition well”，整个句子的意思翻译为“只有尽可能多地阅读才可以掌握‘语感’，这是写好英语作文的不二方法”

Answer 2

which is what it take to write the English composition well.

which指代 the sense of language
what =the thing (that...)
the sense of language is the thing (that it takes to write the English composition well)
有疑问再问吧，助你进步！

Answer 3

what做take宾语
it形式主语，to write不定式短语做真正主语
take的形式不合适

Answer 4

stooped to lift the trunk up into the express. As he did so, the co