Using PROVIDED and AS LONG AS as formal alternatives to IF
Q1. You can borrow my car ___ you promise to drive carefully
PROVIDED sets formal conditions. Cars are lent. Promises are extracted. Trust is tested.
Q2. I will help you ___ you try your best
AS LONG AS demands effort. Help is conditional. Effort is variable. Outcomes differ.
Q3. We will sign the contract ___ all terms are acceptable
PROVIDED THAT introduces business conditions. Terms are negotiated. Contracts are signed. Lawyers prosper.
Q4. You may stay here ___ you follow the rules
AS LONG AS stipulates compliance. Rules exist. Compliance is optional. Consequences follow.
Q5. Which is MOST formal?
PROVIDED THAT is most formal. Legal documents prefer it. IF is universal. AS LONG AS is conversational.