是 does not connect two nouns in "有什么事是我该做的吗?" 有什么事是我该做的吗？
Is there anything I should do?


I realize this is a strange sentence, per the discussion in this question about the same sentence. However I want some clarifications about the existing sentence:

1) Per AllSet Learning, 是 should connect two nouns. Here it connects "什么事 / anything" to "我该做的 / 'I should do' descriptor". Is it correct that descriptor clauses with 的 are nouns?

2) Is 什么事 a single term that corresponds to "something/anything"? What's the difference if I drop the 事?
In short, the second noun "事" is omitted.
The complete sentence should be like this: 

有什么事是我该做的(事)吗？




For more, in Chinese, the attributive clause goes before.

The proper way to translate "Is there anything I should do?" is "有什么我该做的事吗？