新概念3册39课中一个句子分析,谢谢.Brucewentintoalowgearanddroveataterrifyingspeed,keepingthefrontwheelsastridethecrackashefolloweditszigzagcourse.keepingthefrontwheelsastridethecrackashefollowedits

Question

新概念3册39课中一个句子分析,谢谢.
Bruce went into a low gear and drove at a terrifying speed,keeping the front wheels astride the crack as he followed its zigzag course. keeping the front wheels astride the crack as he followed its zigzag course是方式状语修饰drove,as是连词引导从句么?是什么从句?astride the crack 做什么成分?

Answer 1

keeping the front wheels astride the crack as he followed its zigzag course不是方式状语
应该这样来理解:
keeping the front wheels astride the crack 是现在分词短语作伴随状语,表示与drove的动作同时发生.
as he followed its zigzag course是时间状语从句,"当...的时候"
astride the crack 是介词短语作现在分词短语结构中的宾补.(其宾语是 the front wheels )
句意:布鲁斯接通了低速挡,开车速度快得令人害怕; 他在使前轮分跨地裂的同时曲曲折折地前进.