语法没错,有点罗嗦.不太符合一般表达习惯.可能I decide to travel across the country by driving a car.更顺一点吧.如果你一定要同时表达 drive 和travel的意思.为什么没错，解释下可以吗decide to do sth 决定做某事decide to drive 决定开车接下来的to 表目的 去to travel across the country. 去游遍全国