will and would in if clauses
1. will in if-clauses
When the situation or action depicted in the if-clause is a result of the main clause, the will-future is used in the if-clause.
- He'll pay me $10 if I'll help him do the dishes. (Doing the dishes is the result of paying ten dollars.)
2. would in if-clauses
In polite requests would is possible in if-clauses.
- It would be nice if you would help me in the kitchen. (Are you ready to help me in the kitchen?)