Hi, If it is true that we cannot use "will" twice in such a sentence? " It seems fine to me. The 'wills' stress that 'I' am trying to make a deal with 'you'.
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MrPedanticThis seems ok, though:It works fine with two "wills" (contracted, or not). We in BrEng aren't really looking for futurity in such a sentence. It's persistent habit that we are
1. If you will go through red lights, of course you'll get tickets!
This too has the sense of volition that CJ mentions.
MrP