Inversions in conditionals
In certain conditional sentences we can omit “if” and invert the subject and auxiliary verb as if it were a question
auxiliary + subject + verb
It is a more formal form but the meaning is exactly the same.
|If he should call, let me know.||Should he call, let me know.|
|If he were to ask for more money, it would be a problem.||Were he to ask for more money, it would be a problem.|
|If she had studied more, she would have passed the exam.||Had she studied more, she would have passed the exam.|