英语句子分析，谢谢！！

Question

Unfortunately, it is in the nature of the archaeological evidence, which
is almost invariably only a sample of what once existed, that such figures will
always be elusive.

晕了...请教这句话结构该怎么拆分，这么多从句都是修饰谁的啊....谢谢

Answer 1

简单一点来说，就是先把主干找出来。剩下的都当成修饰成分。
长的句子就先看整体，比如上面这一句，明显有一个主干结构“it is .......,that ”那么主干便找出来了:" it is in the nature of the archaeological evidence,that such figures will always be elusive."
那么“which is almost invariably only a sample of what once existed”就是修饰其前面的“evidence”。而“Unfortunately”就是一个副词，至于句子开头，是状语。

Answer 2

it is in the nature of the archaeological evidence that such figures will
always be elusive. 主句是强调句 it is ... that ...

which is almost invariably only a sample of what once existed, 是非限定性定语从句 修饰 the archaeological evidence

翻译：遗憾的是, 这就是考古学证据的本质，这样的证据几乎总是仅仅曾经（在自然界）存在过，这样的数据总是很难找到。本回答被提问者采纳

Answer 3

整个句子是强调句，强调的是状语in the nature of archaeological evidence,而后面which 引导的直到that前面的句子是定语从句，修饰前面的the nature of the archaeological evidence

Answer 4

这个应该只是一部分吧，前面肯定还有，用了形式主语，你这部分都是在说考古学的本质 the nature of the archaeological evidence, 你得整体一起看，不能单独分开看

Answer 5

which 是修饰evidence,定从；what 是of 宾语，自然是宾从，后面的that是it Is.....that....从句。