I happened to be stabbed by TonyK about "Would I have" and "If I would have."
I remember pretty well that grammar books taught me this and there were examples and I oftentimes met such structure in literature, and sci-fi books that I love so much. So is it correct to say:
- Would I have (had) a gun I would have (had them shot) shot them.
- If I would have (had) a gun I would have (had them shot) shot them.
- Had I known him earlier I wouldn't have gone to him.
- If I had known him earlier I wouldn't have gone to him.
And in interrogative sentences:
- If I had got my years back, would I have changed anything?
- Had I got my years back, would I have changed anything?
- If I would have eaten that, would I die?
- Would I have eaten that, would I die?
I remember meeting phrases like:
- I wouldn't be me would I have not studied that much in the past.
- Would he be a racer had his parents not bought him the car?
Edit: Here I found the rule and examples (Subject–Verb Inversion and Omitting "if")