If only I were rich.

但愿我很富有。

《牛津词典》

If only I were as young as you!

我要是和你一样年轻就好了！

youdao

If only I were a bird.

我如果是一只鸟就好了！

youdao

If only I were a multimillionaire who never had to think about working ever again!

FORBES: Why Shania Twain Can't Sing

If only there were such an investment I would urge you to jump right on it.

FORBES: Save Money And Hassle With Do-It-Yourself Annuities

Mr. MITT ROMNEY (Former Republican Governor, Massachusetts): If this were only about me, I'd go on, but it's never been only about me.

NPR: Defeat Unusual for Romney