I will never find my way back to camp.这里 back 是什么词性 什么用法?

on my way back 中的back 是什么词性 I will never back I will be back 中back是什么词性? 这句英语对吗?斯瓦辛格曾说的一句台词：i will be back!这里back做什么词性我听说back做回来时无动词词 "I want find a way back into I will call back.call back是什么修饰什么? Find a way back to your heart. i didn"t go to bed until my father came back中until是什么词性 I was lost my heart and the way to back I‘d never get my yard back to the __it was A.way B.road C.li I always behind you,wait you back when will find I never go One day i'm telling you i find a way to get back to