But it has already sparked significant controversy, with the United States trade representative opening an investigation into whether the tax discriminates against American companies, which in turn could lead to trade sanctions against France.一、语法结构剖析1、找出谓语动词But it has already sparked significant controversy, with the United States trade representative opening an investigation into whether the tax discriminates against American companies, which in turn could lead to trade sanctions against France.2、划出句子结构But ithas already sparkedsignificant controversy, [with the United States trade representative opening an investigation (into whether the taxdiscriminates againstAmerican companies)], (which{in turn} could lead totrade sanctions against France).[主干]But it has already sparked significant controversy“但是这已经激起了重大的争议”|---[伴随状语]with the United States trade representative opening an investigation “美国商务代表开启了一项新的调查”|---[定语(介词+宾语从句)]into whether the tax discriminates against American companies“以确定是否这项税收歧视了美国公司”--修饰investigation |---[非限定定语从句]which in turn could lead to trade sanctions against France “这反过来可能会导致对法国的贸易制裁”二、词汇含义spark 引发、激起、触发