Should is often used in conditional clauses expressing possibilities, suppositions etc. By using should in the if-clause we are suggesting that something is unlikely or not particularly probable. Example: Should your child become anxious or nervous about any activity, it is a good idea to inform the team-leader.

Can we use should in conditional sentences?

Conditional should means if and is used for hypothetical situations. Should you need anything else, please call this number. (If you need anything else, please call this number.)

Should instead of if?

In formal situations, we can use should + subject (s) + verb (v) instead of if: Should you wish to cancel your order, please contact our customer service department on 02317 6658932. (or If you should wish to cancel your order …)