英语翻译

题目

英语翻译
I should have fallen into the hands of the murderous Ghazis had it not been for the devotion and courage shown by Murray,my orderly,who threw me across a packhorse,and successded in bringing me safely to the British lines.
希望能够先翻译一下,我的疑惑是在"had it nou been for the ……"部分,看不懂它的语法成分.

答案

had it not been for..是if it had been的倒装形式,用了虚拟语气,“若不是.”的意思
整句大概就是
若不是（我的后勤兵?）Murray先生对我表现出的衷心和勇气,我早已落入罪犯Ghazis的手中.
他让我骑上马匹,最终安全将我带回british lines.