系概念第四册23课句子语法问题原句：itcomesnearertotheengineswithwhichmanhasconqueredtheair,asheboasts.我百度后有人说可以还原成itcomesnearertotheenginewhichasmanboastshasconqueredtheairwiththe

Question

系概念第四册23课句子语法问题
原句：it comes nearer to the engines with which man has conquered the air ,as he boasts.
我百度后有人说可以 还原成it comes nearer to the engine which as man boasts has conquered the air with the engine.
请问这是什么语法?= = 新概念第四册里好多这种句子 根本不能理解 ：））

Answer 1

with which引导的是带介词的定语从句,as引导的应该是插入语,整个句子应该可以拆成3句：
1.he boasts that man has conquered the air.
2.man has conquered the air with a kind of engines.
3.it comes nearer to these engines.