帮忙翻译一句话啊：If I were any better, I'd be twins!

这是虚拟语气，所以用were。无论人称是复数还是单数，都要用were，只要是虚拟语气。

意思是：如果我能更优秀，我就能一个人做两个人的事了。（意译

If I were any better, I'd be twins!:
如果我是好一点,我将会是双胞胎!

When someone would ask him how he was doing, he would reply, "If I were any better, I’d be twins!
如果有人问他近况如何，他会这样回答:“如果我还能再好，我就成双胞胎了！”