if i were a boy, i would....... this is second conditional if, we use the past tense for imaginary situations or things that arenot possible at present e .g. if i were a bird, i'd like to be a nightingale.

If I were a boy~~~~

如果是想要表达虚拟的话，应该用were吧。 本人英语水平不高，意见仅供参考。

"If I were a boy" (as Beyonce sings it). Aside from being a plural past tense of "to be", "were" is also used to indicate a theoretical or impossible situation. It's not correct to say "if I was a boy" because it's impossible: you were never a boy. The past tense "was" indicates that the event actually happened. Problem is, even native speakers often replace "were" with "was". Be aware of this, it's poor English. "If I am a boy" is also not correct, as it indicates a basic possible situation: you could be a boy at whim. This is very difficult, and most would need surgery. So you need the unreal, theoretical "were" for the sentence.