No.
1. Whether we win or lose, we must play fairly.
2. If we win or lose, we must play fairly.
Is it possible to put 'if' instead of 'whether' like sentence 2?
No.
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.
NOT A TEACHER
I was very curious about the answer. 'If' appeared strange to me, but I didn't know why. Here are the rules that confirm the anwer 'no' in case you are interested.GMAT Grammar: "Whether" vs "If"
Last edited by tom3m; 04-Oct-2012 at 17:59.
It's an unnatural sentence, and if is still wrong.
Rover