What's the meaning of phrase 'should there be' when it isn't used in questions?

What’s the meaning of phrase “should there be” when it isn’t used in questions?

Example: Should there be no subject of the first person, the verb is put in the 2nd person.

Thanks for your help!

Should there be … basically means if there’s

Thanks, Alex. Is this phrase used very often?

Hmm… I can’t tell for sure. We need to wait for a native English speaker to tell us how often they use this clause :slight_smile:

Yes, it is used fairly often, usually in formal contexts.