解答提问者第1个问题

From children's names【状语】//,it【形式主语】 can be inferred// 【谓语动词】what kind of people the parents want their children to be or what kind of life they expect their children to live【真正主语从句】

如果改为从句作主语就是 :what kind of people the parents want their children to be or what kind of life they expect their children to live 【主语】//can be inferred【谓语动词】from children's names【状语】.

解答如下：仅供参考

【1】what kind of people the parents want their children to be 为并列主语从句(1)

备注(1)：to be what kind of people 为主语从句的宾语(their children)的补足语成分，结构“want sb to be+名词=想要某人成为某具有某种身份的人”what为连接代词引导主语从句，并在从句作定语，修饰名词“kind ”。

备注(2)：the parents为主语从句的主语成分，want为主句从句谓语动词，their children为主语从句宾语成分，to be what kind of people为主语从句宾语(their children)的补足语成分.

【2】what kind of life they expect their children to live为并列主语从句(2)

备注(1)：to live what kind of life 为主语从句的宾语(their children)补足语成分，结构“want sb to do sth=想要某人做某事”what为连接代词引导主语从句，并在从句作定语，修饰名词“kind ”。【宾语补足语使用“live a +形容词+life=过着...生活”结构】

备注(2):they主语从句的主语成分，expect为主句从句谓语动词，their children为主语从句宾语成分，to live what kind of life为主语从句宾语(their children)的补足语成分.

【3】or并列连词起连接作用，用来连接2个并列主语从句一起作主句的主语成分。句子整体框架结构为：what....or what.... can be inferred +from ...(介词短语）=from ...(介词短语），It can be inferred what....or what....

解答提问者第2个问题

 We can inferred from children's name that parent's expected their children what can they become or expected their how to live.

网友改写以上句子为错误表达，正确表达应该是下面句子

We can infer from children's name what kind of people the parents want their children to be or what kind of life they expect their children to live.

备注：以上句子整体框架结构为：We can infer +from...(介词短语)+what宾语从句(1)+or+what宾语从句(2). 这个改写句子为2个并列what宾语从句作主句谓语动词“can infer”的宾语成分。备注情态动词can要用动词原形infer.