If only i were you!if only 这句中的Only又是什么意思呀?

if only you were 为什么是if only I were you 而不是if only i was you 为什么If only I were abird.中的were不用was If only you comeback是什么意思 这句中的if only是什么词组? If only I were as wise as you. If only i were as clever as you! If only I were his wife... if only i were made of if only you歌词 If only you still If only ,I