帮忙分析一下句子成分啊

Question

An important step in becoming an effective flatterer is to understand
why flattery helps you establish better relationships with others. The root
cause of the power of flattery gets at a basic principle of human behavior:
People crave being appreciated., The vast majority of people are of the
similar idea despite different cultures. In Asian cultures the desire for
group recognition is generally stronger than the desire for individual
recognition. Nevertheless, the need for recognition is present.

Answer 1

An important step in becoming an effective flatterer is to understand
why flattery helps you establish better relationships with others.

(1) 前置定语：An important (一个很重要的）
(2)主语：step （步骤）

(3)后置定语：in becoming an effective flatter（在成为一个有效的 马屁精/ 奉承者/ 拍马屁的人/拍马者方面 ）（介词+动名词 构成介词短语作后置定语修饰前面名词步骤）

(4)系动词：is（是）

(5)表语：to understand (去理解/明白）（动词不定时作表语说明主语内容）

(6)宾语从句：why flattery helps you establish better relationships with others.（ 为什么奉承/阿谀/恭维能帮助你/你们和别人建立更好的人际关系）（非谓语动词后接宾语从句）

(7)从句主语：flattery（奉承/阿谀/恭维）

(8)从句谓语：helps（帮助）

(9)从句宾语：you（你/你们）

(10)从句宾语补足语：establish better relationship with others（和别人建立更好的人际关系）（不带TO 动词不定时作宾语补足语；help sb do sth的结构，帮助某人作某事）（establish relationships with sb 和某人建议关系）

(11)整个句子中文意思：成为一个有效的奉承者/马屁精的一个很重要的步骤是理解为什么阿玉奉承能帮助你和别人建立更好的人际关系