一个句子具有多种可解的分析方法时,就有必要排除结构歧义(或称句法歧义——译者注)。结构歧义的句子有多种类型。本文将列出某些比较普通的类型,并无求全之意。罗列的类型包括某些会使人误入迷津的局部歧义。揭示结构歧义将使用两种方法。在某些情况下,先给出一个句子,然后列出几种分析方法;在另一些情况下,给出两个句子, When a sentence has a variety of solvable analytical methods, it is necessary to rule out structural ambiguity. There are many types of constructive sentences. This article will list some of the more common types, and did not seek the full meaning. The types listed include some of the local ambiguities that can cause confusion. Two methods are used to reveal structural ambiguities. In some cases, a sentence is given first and then several analytical methods are listed; in other cases two sentences are given,