句子结构剖析（是宾语从句还是定语从句）

The potential is there that this is not as isolated a phenomenon as we might hope it is, he said.
求指点，这句话的语法点。那个 that 是宾语从句还是定语从句？感觉都可以。不过翻译起来有的小差别。那个 is there 是把 there is倒过来移到后面吗？isolated 和 a 的连用如何讲解？

The potential is there that this is not as isolated a phenomenon as we might hope it is.

1. 这个句子的主干是“主系表”结构：The potential is there，is表示“存在”，等于exsits，there 指某个地方。意为“潜在的事物在那里存在着”，不需要考虑太复杂了。

2. that this is not as isolated a phenomenon as we might hope it is 是the potential 的同位语从句，因太长放在句末，被is there 分隔。

3. 这个同位语从句本身是个复合句，含有一个比较从句：as...as...

4. we might hope 后面的it is是宾语从句，可以省去，意思不受影响。

5. 除此之外，注意“as +形容词+ a +名词 + as...”结构，冠词a在形容词isolated 之后。又如：Tom is as clever a boy as John.

【参考翻译】这种潜在的事物客观存在着，它不像大家期望的那样是一种孤立现象。