Hi.<br/><br/>When can we have <i>will</i> in <i>if</i> clause?<br/><br/>I was taught that we can use will in if clause in two cases:<br/><br/>1. In very formal situation when we want to talk politely.<br/><br/>Ex. If you will wait here, I will call the doctor.<br/><br/>2. When the result of main clause is in the if clause.<br/><br/>Ex. Open the window, if it will help you to sleep<br/><br/>I wonder if there are other situations that we can use this structure. I would be grateful if you could exlain with examples.<br/><br/>Thanks