Question

No one there was able to explain the mystery. 各部分

No one there was able to explain the mystery.
各部分的句子成分是什么？

Answer 1

1）原句中there副词作定语，放在被修饰词之后。这是个别情况。类似的还有The people there/here like singing.(那里的/这里的人喜欢唱歌。) 原句中的后半句there放在句首：but there was no one able to explain the mystery 是there be 句型。
2）grow so large 是“系动词+形容词”构成系表结构，类似的用法的词还有：taste good ,feel soft,sound reasonable,look nice,smell good等等。