если бы я знал, я бы

if I knew, I would

→ если
phrase Rare #40,177
if I knew, I would Introduces a hypothetical condition and its result. Depending on context, it can also mean “if I had known, I would have...”
RU: Если бы я знал, я бы не пришёл.
EN: If I had known, I wouldn't have come.