Grammar "should it hold up"

Asked Jul 03 '16 at 06:32

Active Jul 03 '16 at 07:55

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I read a news about terrorist attack:

Berger said Kobani, aside from being sole example cited, was a military-style operation, not a terrorist attack, so the formula, should it hold up, might apply only to large-scale sieges.

I know "so" leads the sentence "the formula, should it hold up, might apply only to large-scale sieges." as a conjunction. "Should it hold up" describes the formula.

But "should it hold up" looks like a question sentence. I want to ask the reason why it was written in this structure.

edited Jul 03 '16 at 07:55

asked Jul 03 '16 at 06:32

Yvonne

Possible duplicate of A special use of "should"? – Jul 03 '16 at 06:48
Please see the definition 3.2 and its second example in the following Oxford Online Dictionary link http://www.oxforddictionaries.com/definition/english/should – Jul 03 '16 at 06:51
Oh~I see. The sentence is transferred from "if it should hold up". Thank you! – Yvonne Jul 05 '16 at 03:12

Grammar "should it hold up"

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