分析一下句子结构，while引导的状语从句，但是这几个that是啥成分，引导的名词性从句么

Question

分析一下句子结构，while引导的状语从句，但是这几个that是啥成分，引导的名词性从句么While Ngan tried to explain that she was studying the processes involved in the construction of identity, many assumed that she was a historian or a genealogist and that her main objective was to study their family history.

Answer 1

很简单while引导原因状语从句
explain that引导宾语从句，
assume that引导宾语从句，and是宾语从句中的连词，连接两个并列的宾语从句and that是assume的第二个that宾语从句追答

identity这里是身份的意思
柯林斯英汉双解大辞典

identity /aɪˈdɛntɪtɪ/ 

1.

可数名词 Your identity is who you are. 身份

例：

Abu is not his real name, but it's one he uses to disguise his identity.

阿布不是他的真名，而是一个他用来掩盖自己身份的假名。